Integrated power supply output current rapid detection circuit and detection method

Abstract

The invention provides an integrated power supply output current rapid detection circuit which is characterized in that a voltage regulator is arranged at the input end of an integrated power supply, and the voltage amplitude of the input end is biased by using the voltage regulator so as to realize detection of an output current value when the input voltage fluctuates; different peripheral circuits are designed at the output end of the integrated power supply according to different output voltage amplitudes and are used for measuring different output currents. According to the invention, the output current value of the integrated power supply can be detected under the condition that the input voltage fluctuates, and the problem of measuring the output current value of the integrated power supply when the input voltage is at any position within an input amplitude range specified by the integrated voltage is solved; and meanwhile, all output current values of the integrated power supply can be detected at one time, the detection efficiency is improved, and the integrated power supply detection requirement under the batch production condition is met.

Description

Technical Field

[0001] The invention belongs to the field of electronic component detection, and specifically relates to an integrated power supply output current rapid detection circuit and a detection method. Background Art

[0002] The integrated power supply is one of the main electronic components of the circuit system. A circuit system usually requires voltages of different amplitudes to power different components at the same time, but the external input power supply has only one amplitude, which cannot meet the needs of the circuit system. Therefore, a circuit system usually requires at least one integrated voltage to meet the power supply needs of different components. Whether the output current value of the integrated power supply is accurate is crucial to the performance of the components. If the output current value is inaccurate, it will cause damage to the components, and in severe cases, it will cause the circuit system to be paralyzed. Therefore, the integrated power supply must be tested before it is put into use.

[0003] At present, the detection method of the integrated power supply is to connect it to AC220V and measure the voltage at the output end of the integrated power supply with a multimeter. This method has some disadvantages: first, when the input voltage fluctuates, it is impossible to detect whether the output current is stable; second, this method cannot detect the output current value; third, this method cannot adapt to the detection needs of the integrated power supply under the mass production of the circuit system. Summary of the invention

[0004] In order to solve the above problems of the prior art, the present invention proposes an integrated power supply output current fast detection circuit and an integrated power supply output current fast detection method. The detection circuit diagram is as follows: Figure 1 As shown, specifically: a voltage regulator is set at the input end of the integrated power supply, and the voltage regulator is used to pull the input voltage amplitude to realize the detection of the output current value when the input voltage fluctuates; at the output end of the integrated power supply, different peripheral circuits are designed for different output voltage amplitudes to measure different output currents.

[0005] The technical solution of the present invention is:

[0006] An integrated power supply output current fast detection circuit includes an input circuit and an output circuit;

[0007] The input circuit is used to connect the input end of the integrated power supply, and includes a voltage regulator T and a switch K1;

[0008] According to the output voltage and output current of the integrated power supply being detected, the output end circuit is divided into several groups, each group includes a fuse, an adjusting resistor module and a current measuring component connected in series in sequence, the fuse is connected to the output end of the integrated power supply, and the current measuring component is connected to the ground end of the integrated power supply; and for each group of output end circuits, when the adjusting resistor module therein is at the minimum resistance value, the total resistance of the group of output end circuits is the maximum value of the output voltage / output current corresponding to the integrated power supply detected by the group of output end circuits, and when the adjusting resistor module therein is at the maximum resistance value, the total resistance of the group of output end circuits is the minimum value of the output voltage / output current corresponding to the integrated power supply detected by the group of output end circuits.

[0009] Furthermore, the adjustable resistance module includes a disc adjustable resistor and / or a sliding rheostat, and the current measurement component includes an ammeter and a shunt.

[0010] Furthermore,

[0011] The input end of the voltage regulator T is connected to the voltage regulator power supply, and the output end is connected to the switch K1, and the other end of the switch K1 is connected to the input end of the integrated power supply;

[0012] The first group of output end circuits includes a 4A fuse FU1, a 10Ω25W disc adjustable resistor R1, and a 10A ammeter A1; the 5V / 0.5-2A+ output end of the integrated power supply is connected to one end of the 4A fuse FU1, the other end of the 4A fuse FU1 is connected to the fixed end of the 10Ω25W disc adjustable resistor R1, the sliding end of the 10Ω25W disc adjustable resistor R1 is connected to one end of the 10A ammeter A1, and the other end of the 10A ammeter A1 is connected to the ground end of the integrated power supply;

[0013] The second output circuit includes a 6A fuse FU2, a 100Ω100W disc adjustable resistor R2, a 30A ammeter A2, and a shunt RW1; the integrated power supply -15V / 0.25-4A+ output end is connected to one end of the 6A fuse FU2, the other end of the 6A fuse FU2 is connected to the fixed end of the 100Ω100W disc adjustable resistor R2, the sliding end of the 100Ω100W disc adjustable resistor R2 is connected to one end of the 30A ammeter A2, the other end of the 30A ammeter A2 is connected to the ground end of the integrated power supply, one end of the shunt RW1 is connected to one end of the 30A ammeter A2, and the other end of the shunt RW1 is connected to the other end of the 30A ammeter A2;

[0014] The third group of output end circuits includes a 6A fuse FU3, a 100Ω100W disc adjustable resistor R3, and a 10A ammeter A3; the integrated power supply 15V / 0.25-4A+ output end is connected to one end of the 6A fuse FU3, the other end of the 6A fuse FU3 is connected to the fixed end of the 100Ω100W disc adjustable resistor R3, the sliding end of the 100Ω100W disc adjustable resistor R3 is connected to one end of the 10A ammeter A3, and the other end of the 10A ammeter A3 is connected to the ground end of the integrated power supply;

[0015] The fourth group of output end circuits includes a 12A fuse FU4, a 15Ω300W disc adjustable resistor R4, and a 10A ammeter A4; the integrated power supply 24V / 3-8A+ output end is connected to one end of the 12A fuse FU4, the other end of the 12A fuse FU4 is connected to the fixed end of the 15Ω300W disc adjustable resistor R4, the sliding end of the 15Ω300W disc adjustable resistor R4 is connected to one end of the 10A ammeter A4, and the other end of the 10A ammeter A4 is connected to the grounding end of the integrated power supply;

[0016] The fifth group of output end circuits includes an 8A fuse FU5, a 50Ω150W disc adjustable resistor R5, and a 10A ammeter A5; the integrated power supply 24V / 0.5-5A+ output end is connected to one end of the 8A fuse FU5, the other end of the 8A fuse FU5 is connected to the fixed end of the 50Ω150W disc adjustable resistor R5, the sliding end of the 50Ω150W disc adjustable resistor R5 is connected to one end of the 10A ammeter A5, and the other end of the 10A ammeter A5 is connected to the grounding end of the integrated power supply;

[0017] The sixth group of output end circuits includes a 25A fuse FU6, a 3Ω20A sliding rheostat R6, a 10Ω1000W disc adjustable resistor R7, a 30A ammeter A6, and a shunt RW2; the integrated power supply 60V / 5-20A+ output end is connected to one end of the 25A fuse FU6, the other end of the 25A fuse FU6 is connected to the fixed end of the 3Ω20A sliding rheostat R6, the sliding end of the 3Ω20A sliding rheostat R6 is connected to the fixed end of the 10Ω1000W disc adjustable resistor R7, the sliding end of the 10Ω1000W disc adjustable resistor R7 is connected to one end of the 30A ammeter A6, the other end of the 30A ammeter A6 is connected to the ground end of the integrated power supply, one end of the shunt RW2 is connected to one end of the 30A ammeter A6, and the other end of the shunt RW2 is connected to the other end of the 30A ammeter A6;

[0018] The seventh group of output circuits includes a 32A fuse FU7, a 1.7Ω30A sliding rheostat R8, a 50A ammeter A7, and a shunt RW3; the integrated power supply 24V / 15-30A+ output end is connected to one end of the 32A fuse FU7, the other end of the 32A fuse FU7 is connected to the fixed end of the 1.7Ω30A disc adjustable resistor R8, the sliding end of the 1.7Ω30A disc adjustable resistor R8 is connected to one end of the 50A ammeter A7, the other end of the 50A ammeter A7 is connected to the ground end of the integrated power supply, one end of the shunt RW3 is connected to one end of the ammeter A7, and the other end of the shunt RW3 is connected to the other end of the ammeter A7.

[0019] A method for quickly detecting an output current of an integrated power supply is provided, using the above-mentioned fast detection circuit for detecting an output current of an integrated power supply, and comprises the following steps:

[0020] Step 1, turn on the switch K1 and adjust the output voltage value of the voltage regulator T so that the voltage meets the index requirements of the integrated power supply input voltage;

[0021] Step 2, respectively adjusting the resistance on each group of circuits to the minimum end and the maximum end, and measuring the no-load current value and the full-load current value of the output end of the integrated power supply by using the ammeter on each group of circuits;

[0022] Step 3, based on the measured no-load current value and full-load current value, determine whether the output current of the integrated power supply meets the requirements. If the no-load current value or full-load current value measured by the ammeter is not the corresponding maximum value or minimum value, it means that the output current of the output end of the integrated power supply does not meet the requirements.

[0023] The technical effects of the present invention are:

[0024] 1. The fast detection circuit of the present invention can detect the output current value of the integrated power supply when the input voltage fluctuates, solving the problem of measuring the output current value when the input voltage is at any position within the input amplitude range specified by the integrated voltage.

[0025] 2. The fast detection circuit of the present invention can detect all output current values ​​of the integrated power supply at one time, thereby improving the detection efficiency and being able to meet the integrated power supply detection requirements under batch production conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a circuit diagram of the input end of the integrated power supply detection circuit of the present invention;

[0027] Figure 2 It is a circuit diagram of the 5V / 0.5-2A output end of the integrated power supply detection circuit of the present invention;

[0028] Figure 3It is a circuit diagram of the integrated power supply detection circuit-15V / 0.25-4A output end of the present invention;

[0029] Figure 4 It is a circuit diagram of the 15V / 0.25-4A output end of the integrated power supply detection circuit of the present invention;

[0030] Figure 5 It is a circuit diagram of the 24V / 15-30A output end of the integrated power supply detection circuit of the present invention;

[0031] Figure 6 It is a circuit diagram of the 60V / 5-20A output end of the integrated power supply detection circuit of the present invention;

[0032] Figure 7 It is a circuit diagram of the 24V / 0.5-5A output end of the integrated power supply detection circuit of the present invention;

[0033] Figure 8 It is a circuit diagram of the 24V / 3-8A output end of the integrated power supply detection circuit of the present invention. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0035] See also Figure 1-8 The integrated power supply output current fast detection circuit provided by the present invention includes an input circuit and an output circuit; the input circuit is used to connect the input end of the integrated power supply, including a voltage regulator T and a switch K1; according to the output voltage and output current of the integrated power supply to be detected, the output circuit is divided into several groups, each group includes a fuse, an adjustment resistor module and a current measurement component connected in series in sequence, the fuse is connected to the output end of the integrated power supply, and the current measurement component is connected to the ground end of the integrated power supply; and for each group of output circuits, when the adjustment resistor module therein is at the minimum resistance value, the total resistance of the group of output circuits is the maximum value of the output voltage / output current corresponding to the integrated power supply detected by the group of output circuits, and when the adjustment resistor module therein is at the maximum resistance value, the total resistance of the group of output circuits is the minimum value of the output voltage / output current corresponding to the integrated power supply detected by the group of output circuits.

[0036] In particular, the adjustable resistance module includes a disc adjustable resistor and / or a sliding rheostat, and the current measuring component includes an ammeter and a shunt; the first group of output end circuits includes a 4A fuse FU1, a 10Ω25W disc adjustable resistor R1, and a 10A ammeter A1; the second group of output end circuits includes a 6A fuse FU2, a 100Ω100W disc adjustable resistor R2, a 30A ammeter A2, and a shunt RW1; the third group of output end circuits includes a 6A fuse FU3, a 100Ω100W disc adjustable resistor R3, and a 10A ammeter A3; the fourth group of output end circuits includes a 12 A fuse FU4, 15Ω300W disc adjustable resistor R4, 10A ammeter A4; the fifth group of output end circuits include 8A fuse FU5, 50Ω150W disc adjustable resistor R5, 10A ammeter A5; the sixth group of output end circuits include 25A fuse FU6, 3Ω20A sliding rheostat R6, 10Ω1000W disc adjustable resistor R7, 30A ammeter A6, shunt RW2; the seventh group of output end circuits include 32A fuse FU7, 1.7Ω30A sliding rheostat R8, 50A ammeter A7, shunt RW3.

[0037] Specifically:

[0038] like Figure 1 As shown, the input end of the voltage regulator T is connected to AC220V, the output end is connected to the switch K1, and the other end of the switch K1 is connected to the input end of the integrated power supply;

[0039] like Figure 2 As shown, the 5V / 0.5-2A+ output end of the integrated power supply is connected to one end of the 4A fuse FU1, the other end of the 4A fuse FU1 is connected to the fixed end of the 10Ω25W disc adjustable resistor R1, the sliding end of the 10Ω25W disc adjustable resistor R1 is connected to one end of the 10A ammeter A1, and the other end of the 10A ammeter A1 is connected to the ground end of the integrated power supply;

[0040] like Figure 3 As shown, the output end of the integrated power supply -15V / 0.25-4A+ is connected to one end of the 6A fuse FU2, the other end of the 6A fuse FU2 is connected to the fixed end of the 100Ω100W disc adjustable resistor R2, the sliding end of the 100Ω100W disc adjustable resistor R2 is connected to one end of the 30A ammeter A2, the other end of the 30A ammeter A2 is connected to the ground end of the integrated power supply, one end of the shunt RW1 is connected to one end of the 30A ammeter A2, and the other end of the shunt RW1 is connected to the other end of the 30A ammeter A2;

[0041] like Figure 4As shown, the integrated power supply 15V / 0.25-4A+ output end is connected to one end of the 6A fuse FU3, the other end of the 6A fuse FU3 is connected to the fixed end of the 100Ω100W disc adjustable resistor R3, the sliding end of the 100Ω100W disc adjustable resistor R3 is connected to one end of the 10A ammeter A3, and the other end of the 10A ammeter A3 is connected to the grounding end of the integrated power supply;

[0042] like Figure 8 As shown, the integrated power supply 24V / 3-8A+ output end is connected to one end of the 12A fuse FU4, the other end of the 12A fuse FU4 is connected to the fixed end of the 15Ω300W disc adjustable resistor R4, the sliding end of the 15Ω300W disc adjustable resistor R4 is connected to one end of the 10A ammeter A4, and the other end of the 10A ammeter A4 is connected to the grounding end of the integrated power supply;

[0043] like Figure 7 As shown, the integrated power supply 24V / 0.5-5A+ output end is connected to one end of the 8A fuse FU5, the other end of the 8A fuse FU5 is connected to the fixed end of the 50Ω150W disc adjustable resistor R5, the sliding end of the 50Ω150W disc adjustable resistor R5 is connected to one end of the 10A ammeter A5, and the other end of the 10A ammeter A5 is connected to the grounding end of the integrated power supply;

[0044] like Figure 6 As shown, the output end of the integrated power supply 60V / 5-20A+ is connected to one end of the 25A fuse FU6, the other end of the 25A fuse FU6 is connected to the fixed end of the 3Ω20A sliding rheostat R6, the sliding end of the 3Ω20A sliding rheostat R6 is connected to the fixed end of the 10Ω1000W disc adjustable resistor R7, the sliding end of the 10Ω1000W disc adjustable resistor R7 is connected to one end of the 30A ammeter A6, the other end of the 30A ammeter A6 is connected to the ground end of the integrated power supply, one end of the shunt RW2 is connected to one end of the 30A ammeter A6, and the other end of the shunt RW2 is connected to the other end of the 30A ammeter A6;

[0045] like Figure 5 As shown, the integrated power supply 24V / 15-30A+ output end is connected to one end of the 32A fuse FU7, the other end of the 32A fuse FU7 is connected to the fixed end of the 1.7Ω30A disc adjustable resistor R8, the sliding end of the 1.7Ω30A disc adjustable resistor R8 is connected to one end of the 50A ammeter A7, the other end of the 50A ammeter A7 is connected to the ground end of the integrated power supply, one end of the shunt RW3 is connected to one end of the ammeter A7, and the other end of the shunt RW3 is connected to the other end of the ammeter A7.

[0046] When the integrated power supply output current fast detection method provided by the present invention uses the above-mentioned integrated power supply output current fast detection circuit to detect the output current of the integrated power supply, the specific operation steps are as follows:

[0047] Step 1, turn on the switch K1 and adjust the output voltage value of the voltage regulator T to meet the index requirements of the integrated power supply input voltage;

[0048] Step 2, respectively adjusting the resistance on each group of circuits to the minimum end and the maximum end, and measuring the no-load current value and the full-load current value of the output end of the integrated power supply by using the ammeter on each group of circuits;

[0049] Step 3, based on the measured no-load current value and full-load current value, determine whether the output current of the integrated power supply meets the requirements. If the no-load current value or full-load current value measured by the ammeter is not the corresponding maximum value or minimum value, it means that the output current of the output end of the integrated power supply does not meet the requirements.

[0050] In the embodiment of the present invention, the specific operation steps are:

[0051] Turn on switch K1 and adjust the output voltage value of the voltage regulator T to meet the index requirements of the integrated power supply input voltage;

[0052] Adjust the disc adjustable resistor R1 to the minimum end, and the no-load current value of the integrated power supply 5V / 0.5-2A+ output terminal can be measured by ammeter A1 as the maximum output current of the port. Adjust the disc adjustable resistor R1 to the maximum end, and the full-load current value of the integrated power supply 5V / 0.5-2A+ output terminal can be measured by ammeter A1 as the minimum output current of the port.

[0053] Adjust the disc adjustable resistor R2 to the minimum end, and the no-load current value of the integrated power supply -15V / 0.25-4A+ output terminal can be measured by ammeter A2 as the maximum output current of the port. Adjust the disc adjustable resistor R2 to the maximum end, and the full-load current value of the integrated power supply -15V / 0.25-4A+ output terminal can be measured by ammeter A2 as the minimum output current of the port.

[0054] Adjust the disc adjustable resistor R3 to the minimum end, and the no-load current value of the integrated power supply 15V / 0.25-4A+ output terminal can be measured by ammeter A3 as the maximum output current of the port. Adjust the disc adjustable resistor R3 to the maximum end, and the full-load current value of the integrated power supply 15V / 0.25-4A+ output terminal can be measured by ammeter A3 as the minimum output current of the port;

[0055] Adjust the disc adjustable resistor R4 to the minimum end, and the no-load current value of the integrated power supply 24V / 3-8A+ output terminal can be measured by the ammeter A4 as the maximum output current of the port. Adjust the disc adjustable resistor R4 to the maximum end, and the full-load current value of the integrated power supply 24V / 3-8A+ output terminal can be measured by the ammeter A4 as the minimum output current of the port;

[0056] Adjust the disc adjustable resistor R5 to the minimum end, and the no-load current value of the integrated power supply 24V / 0.5-5A+ output terminal can be measured by ammeter A5 as the maximum output current of the port. Adjust the disc adjustable resistor R5 to the maximum end, and the full-load current value of the integrated power supply 24V / 0.5-5A+ output terminal can be measured by ammeter A5 as the minimum output current of the port;

[0057] Adjust the sliding rheostat R6 and the disc adjustable resistor R7 to the minimum end, then the no-load current value of the integrated power supply 60V / 5-20A+ output terminal can be measured by the ammeter A6 as the maximum output current of the port. Adjust the sliding rheostat R6 and the disc adjustable resistor R7 to the maximum end, then the full-load current value of the integrated power supply 60V / 5-20A+ output terminal can be measured by the ammeter A6 as the minimum output current of the port;

[0058] By adjusting the disc adjustable resistor R8 to the minimum end, the no-load current value of the integrated power supply 24V / 15-30A+ output terminal can be measured by ammeter A7 as the maximum output current of the port. By adjusting the disc adjustable resistor R8 to the maximum end, the full-load current value of the integrated power supply 24V / 15-30A+ output terminal can be measured by ammeter A7 as the minimum output current of the port.

[0059] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should be included in the protection scope of the present invention.

Claims

1. The integrated power supply output current fast detection circuit is characterized by: including an input circuit and an output circuit; The input circuit is used to connect the input end of the integrated power supply, and includes a voltage regulator T and a switch K1; According to the output voltage and output current of the integrated power supply being detected, the output end circuit is divided into several groups, each group includes a fuse, an adjusting resistor module and a current measuring component connected in series in sequence, the fuse is connected to the output end of the integrated power supply, and the current measuring component is connected to the ground end of the integrated power supply; and for each group of output end circuits, when the adjusting resistor module therein is at the minimum resistance value, the total resistance of the group of output end circuits is the maximum value of the output voltage / output current corresponding to the integrated power supply detected by the group of output end circuits, and when the adjusting resistor module therein is at the maximum resistance value, the total resistance of the group of output end circuits is the minimum value of the output voltage / output current corresponding to the integrated power supply detected by the group of output end circuits.

2. The integrated power supply output current fast detection circuit according to claim 1, characterized in that: The adjustable resistance module includes a disc adjustable resistor and / or a sliding rheostat, and the current measuring component includes an ammeter and a shunt.

3. The integrated power supply output current fast detection circuit according to claim 1, characterized in that: The input end of the voltage regulator T is connected to the voltage regulator power supply, and the output end is connected to the switch K1, and the other end of the switch K1 is connected to the input end of the integrated power supply; The first group of output end circuits includes a 4A fuse FU1, a 10Ω25W disc adjustable resistor R1, and a 10A ammeter A1; the 5V / 0.5-2A+ output end of the integrated power supply is connected to one end of the 4A fuse FU1, the other end of the 4A fuse FU1 is connected to the fixed end of the 10Ω25W disc adjustable resistor R1, the sliding end of the 10Ω25W disc adjustable resistor R1 is connected to one end of the 10A ammeter A1, and the other end of the 10A ammeter A1 is connected to the ground end of the integrated power supply; The second output circuit includes a 6A fuse FU2, a 100Ω100W disc adjustable resistor R2, a 30A ammeter A2, and a shunt RW1; the integrated power supply -15V / 0.25-4A+ output end is connected to one end of the 6A fuse FU2, the other end of the 6A fuse FU2 is connected to the fixed end of the 100Ω100W disc adjustable resistor R2, the sliding end of the 100Ω100W disc adjustable resistor R2 is connected to one end of the 30A ammeter A2, the other end of the 30A ammeter A2 is connected to the ground end of the integrated power supply, one end of the shunt RW1 is connected to one end of the 30A ammeter A2, and the other end of the shunt RW1 is connected to the other end of the 30A ammeter A2; The third group of output end circuits includes a 6A fuse FU3, a 100Ω100W disc adjustable resistor R3, and a 10A ammeter A3; the integrated power supply 15V / 0.25-4A+ output end is connected to one end of the 6A fuse FU3, the other end of the 6A fuse FU3 is connected to the fixed end of the 100Ω100W disc adjustable resistor R3, the sliding end of the 100Ω100W disc adjustable resistor R3 is connected to one end of the 10A ammeter A3, and the other end of the 10A ammeter A3 is connected to the ground end of the integrated power supply; The fourth group of output end circuits includes a 12A fuse FU4, a 15Ω300W disc adjustable resistor R4, and a 10A ammeter A4; the integrated power supply 24V / 3-8A+ output end is connected to one end of the 12A fuse FU4, the other end of the 12A fuse FU4 is connected to the fixed end of the 15Ω300W disc adjustable resistor R4, the sliding end of the 15Ω300W disc adjustable resistor R4 is connected to one end of the 10A ammeter A4, and the other end of the 10A ammeter A4 is connected to the grounding end of the integrated power supply; The fifth group of output end circuits includes an 8A fuse FU5, a 50Ω150W disc adjustable resistor R5, and a 10A ammeter A5; the integrated power supply 24V / 0.5-5A+ output end is connected to one end of the 8A fuse FU5, the other end of the 8A fuse FU5 is connected to the fixed end of the 50Ω150W disc adjustable resistor R5, the sliding end of the 50Ω150W disc adjustable resistor R5 is connected to one end of the 10A ammeter A5, and the other end of the 10A ammeter A5 is connected to the grounding end of the integrated power supply; The sixth group of output end circuits includes a 25A fuse FU6, a 3Ω20A sliding rheostat R6, a 10Ω1000W disc adjustable resistor R7, a 30A ammeter A6, and a shunt RW2; the integrated power supply 60V / 5-20A+ output end is connected to one end of the 25A fuse FU6, the other end of the 25A fuse FU6 is connected to the fixed end of the 3Ω20A sliding rheostat R6, the sliding end of the 3Ω20A sliding rheostat R6 is connected to the fixed end of the 10Ω1000W disc adjustable resistor R7, the sliding end of the 10Ω1000W disc adjustable resistor R7 is connected to one end of the 30A ammeter A6, the other end of the 30A ammeter A6 is connected to the ground end of the integrated power supply, one end of the shunt RW2 is connected to one end of the 30A ammeter A6, and the other end of the shunt RW2 is connected to the other end of the 30A ammeter A6; The seventh group of output circuits includes a 32A fuse FU7, a 1.7Ω30A sliding rheostat R8, a 50A ammeter A7, and a shunt RW3; the integrated power supply 24V / 15-30A+ output end is connected to one end of the 32A fuse FU7, the other end of the 32A fuse FU7 is connected to the fixed end of the 1.7Ω30A disc adjustable resistor R8, the sliding end of the 1.7Ω30A disc adjustable resistor R8 is connected to one end of the 50A ammeter A7, the other end of the 50A ammeter A7 is connected to the ground end of the integrated power supply, one end of the shunt RW3 is connected to one end of the ammeter A7, and the other end of the shunt RW3 is connected to the other end of the ammeter A7.

4. A method for quickly detecting output current of an integrated power supply, characterized in that: The integrated power supply output current fast detection circuit according to claims 1 to 3 is used for detection, comprising the following steps: Step 1, turn on the switch K1 and adjust the output voltage value of the voltage regulator T so that the voltage meets the index requirements of the integrated power supply input voltage; Step 2, respectively adjusting the resistance on each group of circuits to the minimum end and the maximum end, and measuring the no-load current value and the full-load current value of the output end of the integrated power supply by the ammeter on each group of circuits; Step 3, based on the measured no-load current value and full-load current value, determine whether the output current of the integrated power supply meets the requirements. If the no-load current value or full-load current value measured by the ammeter is not the corresponding maximum value or minimum value, it means that the output current of the output end of the integrated power supply does not meet the requirements.

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