Multi-channel diode dual-OR logic circuit card with test loop
By designing a multi-channel diode dual-or logic circuit card with test loop, the problem that existing digital circuits are difficult to effectively test whether the power supply and buttons are normal when performing OR gate logic operations and controlling outputs, and the isolation of DC digital input signals and OR gate logic operations are realized, which enhances the testability of the circuit and multi-channel testing capabilities.
Patent Information
- Application Number
- CN202420535319.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-19
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-03-19
AI Technical Summary
When existing digital circuits perform OR gate logic operations and control outputs, it is difficult to effectively test whether the power supply and buttons are normal, and there is a lack of implementation of multi-channel test loops.
A multi-channel diode dual-or logic circuit card with test loop is designed to isolate diodes D1, D2, D3 through signal input, as well as test diodes D4, D5, D6, and combine indicator light L1 and button PB01 to realize OR gate logic control and test functions.
It realizes isolation and OR gate logic operations of DC digital input signals, can drive external lamp bell equipment, and tests the normal operation of power supply and buttons through manual buttons, enhancing the testability of the circuit and multi-channel test capabilities.
Smart Images
Figure CN222814470U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of low-voltage digital circuit systems, and in particular relates to a multi-channel diode double-OR logic circuit card with a test loop. Background Art
[0002] A circuit that uses digital signals to perform arithmetic and logical operations on digital quantities is called a digital circuit, or a digital system. Because it has logical operations and logic processing functions, it is also called a digital logic circuit. Modern digital circuits are constructed from a number of digital integrated devices made by semiconductor technology. Logic gates are the basic units of digital logic circuits. On the whole, digital circuits can be divided into two categories: combinational logic circuits and sequential logic circuits.
[0003] With the development of electronic technology, digital circuits are increasingly used in control engineering. It is more important to detect the high and low levels of digital circuits. For digital circuits, executing OR gate logic operations and controlling outputs are relatively important links. For this reason, we propose a multi-channel diode double OR logic circuit card with a test loop to solve the above-mentioned problems. Utility Model Content
[0004] The utility model aims to provide a multi-channel diode double-OR logic circuit card with a test loop to solve the problems raised in the above background technology.
[0005] To achieve the above object, the utility model provides the following technical solutions: a multi-channel diode double-OR logic circuit card with a test circuit, including signal input isolation diodes D1, D2 and D3, test diodes D4, D5 and D6, and an indicator light L1, a button PB01;
[0006] Among them, diodes D1, D2 and D3 are connected in parallel to isolate DC digital input signals from each other, diode D1 is connected in parallel with diode D4, diode D2 is connected in parallel with diode D5, diode D3 is connected in parallel with diode D6, and indicator light L1 is connected in parallel with button PB01 and then connected in series into the circuit.
[0007] Preferably, the circuit further includes a 24VDC power supply terminal M and a 0V power supply terminal G, the power supply terminal M is connected to the button PB01, and the power supply terminal G is connected to the negative terminal of the indicator light.
[0008] Preferably, the circuit also includes output terminals A1, B1 and C1, input terminals A, B and C, input terminal A is connected to diode D1, input terminal B is connected to diode D2, input terminal C is connected to diode D3, output terminal A1 is connected to diode D1, output terminal B1 is connected to diode D2, and output terminal C1 is connected to diode D3.
[0009] Preferably, button PB01 is a manual button.
[0010] Compared with the prior art, the utility model has the beneficial effect that: the utility model adopts a diode to realize OR gate logic control.
[0011] This circuit superimposes one signal on each DC digital input signal and uses OR gate logic circuit operation to drive the light and bell equipment outside the test card.
[0012] This circuit uses manual button PB01 to test the presence of power supply and whether the button PB01 is normal. PB01 is a normally open self-reset MO type. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a circuit working schematic diagram of the utility model. DETAILED DESCRIPTION
[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0015] See also Figure 1 The utility model provides a multi-channel diode double-OR logic circuit card with a test circuit, including a diode D1, a diode D2, a diode D3, a diode D4, a diode D5, a diode D6, an indicator light L1, and a button PB01;
[0016] Among them, diode D1, diode D2, and diode D3 are connected in parallel to isolate the input signal. Diode D1 is connected in parallel with D4, diode D2 is connected in parallel with D5, and diode D3 is connected in parallel with D6 to complete the OR logic operation. The indicator light L1 and button PB01 are connected in parallel and then connected in series into the circuit.
[0017] In this embodiment, the circuit further includes a 24VDC power supply terminal M and a DC0V power supply terminal G, the power supply terminal M is connected to the button PB01, and the power supply terminal G is connected to the end of the indicator light.
[0018] In this embodiment, the circuit also includes output terminals A1, B1 and C1, input terminals A, input terminal B and input terminal C, input terminal A is connected to diode D1, input terminal B is connected to diode D2, input terminal C is connected to diode D3, output terminal A1 is connected to diode D1, output terminal B1 is connected to diode D2, and output terminal C1 is connected to diode D3.
[0019] In this embodiment, the button PB01 is a manual button, which is a normally open self-reset MO type.
[0020] Furthermore, the low-voltage digital circuit system to which the utility model belongs or to which the utility model is directly applied performs OR gate logic operations and controls outputs to test the light bell outside the card component.
[0021] The DC digital input signal is a standard low-voltage electronic signal, which has the following four types:
[0022] A.5VDC;
[0023] B.12VDC;
[0024] C.24VDC;
[0025] D.36VDC.
[0026] The working principle and use process of the utility model are as follows: a multi-channel diode or gate logic electronic circuit diagram is drawn by taking 24VDC digital quantity as an example.
[0027] The test button PB01 is a manual switch for connecting the test circuit, and is also used to check whether the power supply is available and whether the button itself is normal.
[0028] Figure 1 The multi-channel diode or gate logic electronic circuit diagram is drawn using 24VDC digital quantity as an example.
[0029] Furthermore, the circuit is installed in a European card installation integrated manner.
[0030] The electronic components and modules used in the content of this utility model can all be parts commonly used in the market that can realize the specific functions in this case, and the specific models and sizes can be selected and adjusted according to actual needs.
[0031] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. Multi-channel diode double-OR logic circuit card with test circuit, characterized in that: It includes diodes D1, D2, D3, D4, D5 and D6, indicator light L1, and button PB01; Among them, diodes D1, D2, and D3 are connected in parallel to isolate digital input signals, diode D1 is connected in parallel with D4, diode D2 is connected in parallel with D5, diode D3 is connected in parallel with D6, and button PB01 is connected in series with D4, D5, and D6 for power supply.
2. The multi-channel diode double-OR logic circuit card with a test loop according to claim 1, characterized in that: It also includes a 24VDC power supply terminal M and a 0VDC power supply terminal G. The power supply terminal M is connected to the button PB01, and the power supply terminal G is connected to the negative end of the indicator light.
3. The multi-channel diode double-OR logic circuit card with a test loop according to claim 1, characterized in that: It also includes output terminal A1, output terminal B1, output terminal C1, input terminals A, B and C are connected to diodes D1, D2, D3 respectively, the corresponding output terminals are A1, B1 and C1, output terminal A1 is connected to diode D1, output terminal B1 is connected to diode D2, and output terminal C1 is connected to diode D3.