Adjustable direct current stabilized power supply circuit
A technology of DC regulated power supply and AC power supply, which is applied in the direction of converting irreversible AC power input into DC power output, without intermediate conversion to AC conversion equipment, etc. To achieve the effect of simple circuit structure
Inactive Publication Date: 2015-01-28
成都爱斯顿测控技术有限公司
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Problems solved by technology
[0002] With the rapid development of society, the number of electrical equipment is increasing day by day. Unstable voltage will cause fatal damage or malfunction to the equipment, affect production, cause delays in delivery, unstable quality and other losses, and at the same time accelerate the aging of equipment and affect the use. Life expectancy or even burnt parts, so that the owner faces the trouble of needing maintenance or updating the equipment in a short period of time, wasting resources, and even causing safety accidents in serious cases, causing immeasurable losses
The use of regulated power supply solves such problems for people, but the structure of traditional regulated power supply circuit is relatively complicated, the cost is high, and it is not easy to adjust
Method used
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[0009] The present invention will be further described below in conjunction with accompanying drawing:
[0010] Such as figure 1 As shown, an adjustable DC stabilized power supply circuit of the present invention includes an AC power supply AC, a transformer T, a bridge rectifier BR, a first capacitor C1 to a fourth capacitor C4, a diode D, a three-terminal voltage stabilized integrated chip IC, Zener diode DW, first resistor R1, second resistor R2, voltmeter V and potentiometer RP, the first end of AC power supply AC is connected to the first end of the primary coil of transformer T, and the second end of AC power supply AC is connected to The second end of the primary coil of the transformer T is connected, the first end of the first secondary coil of the transformer T is connected with the first voltage end of the bridge rectifier BR, the second end of the first secondary coil of the transformer T is connected with the bridge rectifier The second voltage terminal of the re...
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The invention discloses an adjustable direct current stabilized power supply circuit. The adjustable direct current stabilized power supply circuit comprises an alternating current power supply, a transformer, a bridge rectifier, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a diode, a three-end voltage stabilizing integrated chip, a voltage stabilizing diode, a first resistor, a second resistor, a voltmeter and a potentiometer. After the alternating voltage is reduced through the transformer, two paths of different alternating voltages are generated on a first secondary coil and a second secondary coil of the transformer respectively, one path of the alternating voltage is output after rectifying is carried out through the bridge rectifier, filtering is carried out through the first capacitor and the third capacitor, and voltage stabilizing is carried out through the three-end voltage stabilizing integrated chip, and the other path of the alternating voltage is added to a voltage adjusting end of the three-end voltage stabilizing integrated chip through the potentiometer after rectifying is carried out through the diode, filtering is carried out through the second capacitor, current limiting and voltage reducing are carried out through the first resistor and voltage stabilizing is carried out through the voltage stabilizing diode. The voltage is stably output within a certain range through a small number of elements, the circuit structure is simple, cost is low, and adjustment is facilitated.
Description
technical field [0001] The invention relates to a voltage-stabilizing power supply circuit, in particular to an adjustable DC voltage-stabilizing power supply circuit. Background technique [0002] With the rapid advancement of society, the number of electrical equipment is increasing day by day. Unstable voltage will cause fatal damage or malfunction to the equipment, affect production, cause delays in delivery, unstable quality and other losses. At the same time, it will accelerate the aging of equipment and affect the use. Life expectancy or even burnt parts, so that the owner faces the trouble of repairing or updating equipment in a short period of time, wasting resources, and even causing safety accidents in serious cases, causing immeasurable losses. The use of regulated power supply solves such problems for people, but the structure of traditional regulated power supply circuit is relatively complicated, the cost is high, and it is not easy to adjust. Contents of th...
Claims
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Login to View More IPC IPC(8): H02M7/06
CPCH02M7/06H02M3/06
Inventor 刘德伟杜鹰王光勇罗祥华
Owner 成都爱斯顿测控技术有限公司