Power supply switch control circuit
A technology for controlling circuits and power switches, applied in electronic switches, electrical components, pulse technology, etc., can solve the problems of easily damaged lower-level circuits and large equipment, and achieve the effect of prolonging life and reducing volume.
Inactive Publication Date: 2013-12-25
OCEANKING DONGGUAN LIGHTING TECH +2
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to overcome the problem that the toggle switch in the prior art occupies a large volume of equipment and is easy to damage the lower circuit, and proposes a power switch control circuit, which can reduce the volume of the entire equipment and protect the downstream IC circuit , extending the life of the device
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[0017] In order to further illustrate the principle and structure of the present invention, the preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
[0018] see figure 1 , the present invention is a power switch control circuit, which is connected between the power supply and the lower-level circuit, including: a switch 1; a D flip-flop 2, the CP pin of which is connected to the switch 1, and its The pin is connected to the D pin, its The pin is also connected to a switch tube 3, which is used to detect the action of the switch, and output the control signal of on or off to the switch tube 3; the switch tube 3, its control end is connected to the D flip-flop 2 Pin, its input end is connected to the power supply 4, and its output end is connected to the lower-level circuit 5, the switch tube 3 is used to conduct the conduction of the power supply 4 and the lower-level circuit 5 according to the ON or OF...
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A power supply switch control circuit is connected between a power supply and a lower-stage circuit. The circuit comprises a switch, a D trigger and a switch tube, wherein a CP base pin of the D trigger is connected with the switch; a base pin is connected with a D base pin and the base pin is also connected with the switch tube; the D trigger is used to detect motion of the switch and output an on or off control signal to the switch tube; a control terminal of the switch tube is connected with the base pin of the D trigger and an input terminal is connected with the power supply; an output terminal of the switch tube is connected with the lower-stage circuit. The switch tube is used to control conduction or disconnection of the power supply and the lower-stage circuit according to the on or off control signal from the D trigger. By using the circuit of the invention, the size of equipment is reduced; a downstream IC circuit is protected and a service life of the equipment is prolonged.
Description
technical field [0001] The invention relates to a control circuit, in particular to a power switch control circuit. Background technique [0002] In daily applications, electronic devices often switch the power on and off by setting a toggle switch. This kind of toggle switch usually takes up a lot of PCB board space due to its huge volume, thereby increasing the volume of the entire device. The most important thing is that the use of this switch is to force the input power supply to instantly supply power to various IC circuits downstream of the entire board. Now ICs are more precise and easier to damage. Therefore, if the IC is often mechanically switched by the toggle switch (large inrush current, arcing), its life will be greatly shortened. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention is to overcome the above-mentioned problems that the toggle switch in the prior art occupies a large volume of the equipment and easily ...
Claims
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Inventor 周明杰王永清
Owner OCEANKING DONGGUAN LIGHTING TECH