CN202713270U

CN202713270U - Circuit realizing multipath signal logic control

Info

Publication number: CN202713270U
Application number: CN 201220253475
Authority: CN
Inventors: 李洁; 欧寿春; 张峥
Original assignee: Luoyang Longsheng Technology Co Ltd
Current assignee: Luoyang Longsheng Technology Co Ltd
Priority date: 2012-05-31
Filing date: 2012-05-31
Publication date: 2013-01-30
Anticipated expiration: 2022-05-31

Abstract

The utility model introduces a circuit realizing multipath signal logic control. The circuit is characterized by comprising multipath DC/DC module control circuits, and each path of signal control circuit comprises a first resistor, a second resistor, a first optocoupler, a second optocoupler, a first triode, a DC/DC module, and a plurality of diodes, wherein the number of the diodes is the same with the number of control signals. The control signals are TTL level signals. Input ports are input of the DC/DC modules, and output ports are output of the DC/DC modules. The circuit realizing multipath signal logic control uses little devices, and is low in consumption, high in reliability, and is convenient and easy. The circuit is tried out on a product which needs a control function, and the circuit never breaks down. The control circuit has wide application prospect in multipath signal controlling multipath output power.

Description

A kind of circuit of realizing the multiple signals logic control

Technical field

The utility model relates to a kind of logic control electronic technology, particularly a kind of circuit of realizing the multiple signals logic control.

Background technology

Single channel is arranged for the stabilized voltage power supply of power electronic equipment, multichannel is also arranged.For different stabilized voltage power supply control various requirements are arranged also, what have only need to add the input control switch, the connection input power gets final product, and what have has the requirement of electric sequence to different output voltages, also has some electronic equipments to require plurality of voltages is realized certain logic control.Its control mode of the different way of outputs is also different.Integrated regulated power supply generally has logic switch control exit, and take the DC/DC module of VICOR as example, its logical relation is: when between control end PC and the negative input end during for high level, the DC/DC module has output; Otherwise, during for low level, DC/DC module no-output.

The requirement of using becomes a kind of technical need so that research and develop a kind of simply again reliable logic control circuit.。

Summary of the invention

Technical problem to be solved in the utility model provides a kind of circuit of realizing the multiple signals logic control, so that the output of multiple signals control multiple power supplies is achieved.

For the purpose that realizes solving the problems of the technologies described above, the utility model has adopted following technical scheme:

A kind of circuit of realizing the multiple signals logic control of this patent, comprise multichannel DC/DC module control circuit, each road signal control circuit includes the first resistance and the second resistance, the first optocoupler and the second optocoupler, the first triode, DC/DC module and a plurality of diode; Wherein the quantity of diode is identical with the quantity of control signal, and control signal is the Transistor-Transistor Logic level signal; Input port is the input of DC-DC module, and output port is the output of DC-DC module;

The structure of the DC/DC module by signal control circuit on each road is: after the anode of Transistor-Transistor Logic level signal passes through first resistance of series connection, be connected to the anode of the first optocoupler input luminous tube, the negative electrode of the first optocoupler input luminous tube connects the anode of the second optocoupler input luminous tube, and the negative electrode of the second optocoupler input luminous tube is connected to the negative terminal of Transistor-Transistor Logic level signal; The emitter of the output triode of the first optocoupler connects the negative terminal of DC/DC module input and the emitter of the first triode, and the collector electrode of the output triode of the first optocoupler connects the base stage of an end and first triode of the second resistance; The collector electrode of another termination the first triode of the second resistance and the negative electrode of the first diode, the anode of the first diode connects the control end of DC/DC module; The collector electrode of the second optocoupler output triode connects the negative electrode of next road the second diode, and the emitter of the second optocoupler output triode connects the negative terminal of DC/DC module input; Negative terminal and the input anode of the DC/DC module input on each road connect together, and the DC/DC module input on each road is in parallel.

The described optocoupler of this patent, i.e. photoisolator or photoelectrical coupler.It with light-emitting component such as light-emitting diode and light-sensitive element such as phototriode mutually insulated combine; Light-emitting component is input circuit, converts electric energy to luminous energy; Light-sensitive element is output loop; Convert again luminous energy to electric energy.

The described DC/DC module of this patent is the DC/DC modular circuit with voltage conversion function of prior art.As long as possessing above-mentioned functions all can use.

By adopting technique scheme, the utlity model has following beneficial effect:

The realization multiple signals logic control of this patent uses device few, low in energy consumption, simple and convenient, and reliability is high; Have on the product that needs the control function and try out, fault never occurred; Output has wide practical use this control circuit to multiple signals control multiple power supplies.

Description of drawings

Fig. 1 is a kind of logic control schematic diagram of realizing the circuit of multiple signals logic control of this patent.

Among the figure, 11,13,15 is the first resistance, 12,14,16 is the second resistance, 21,23,25 is the first optocoupler, 22,24,26 is the second optocoupler, and 31,32,33 is the first triode, and 41,44,47 is the first diode, 51,52,53 is the DC/DC module, and 42,43,45,46,48,49 are respectively the diode of DC/DC module controls end in each road.

Embodiment

Embodiment 1

Below in conjunction with accompanying drawing 1, take three road signals as example, this patent is further expalined explanation.

When TTL signal 1 is high level, when all the other are low level, optocoupler 21,22 work, it is output as conducting state, triode 31 cut-offs this moment, the control end of first via DC/DC module is high level, the first via has output.And the output conducting of optocoupler 22, make the second the road and the DC/DC module controls end of Third Road be low level, thereby the second the tunnel, Third Road does not all have output.

In like manner, when signal 2 is high level, when all the other are low level,

optocoupler

23,24 work, the second road DC/DC module has output, all the other no-outputs.This logic control table is as shown in table 1.

Table 1 logic control table

Figure 2012202534758100002DEST_PATH_IMAGE001

Can be found out that by logical table only having control signal corresponding to DC/DC module is high level, when all the other were low level, this module just had output.All the other do not meet the equal no-output of logical combination of this situation.

This control circuit uses device few, low in energy consumption, simple and convenient, and reliability is high.Product test in needs control function is used for many years, fault never occurs.Output has wide practical use this control circuit to multiple signals control multiple power supplies.

Claims

1. circuit of realizing the multiple signals logic control, it is characterized in that: comprise multichannel DC/DC module control circuit, each road signal control circuit includes the first resistance and the second resistance, the first optocoupler and the second optocoupler, the first triode, DC/DC module and a plurality of diode; Wherein the quantity of diode is identical with the quantity of control signal, and control signal is the Transistor-Transistor Logic level signal; Input port is the input of DC-DC module, and output port is the output of DC-DC module;

2. the circuit of described realization multiple signals logic control according to claim 1 is characterized in that: described optocoupler, i.e. photoisolator or photoelectrical coupler; With light-emitting component and light-sensitive element mutually insulated combine; Light-emitting component is input circuit, converts electric energy to luminous energy; Light-sensitive element is output loop, converts luminous energy to electric energy again.