a driving circuit
A technology for driving circuits and circuits, applied in the field of electronics, can solve the problems of inability to drive relays to work, and achieve the effects of low cost and simple circuit structure
Active Publication Date: 2017-11-21
OCEANKING DONGGUAN LIGHTING TECH +2
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Problems solved by technology
[0003] When the voltage of the power supply is lower than the operating voltage of the relay, it is usually impossible to drive the relay to work
Method used
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[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0037] See figure 1 , is a schematic diagram of a module structure of a drive circuit according to an embodiment of the present invention. The drive circuit of the present invention can still drive the relay to work when the voltage of the power supply is lower than the working voltage of the relay. It includes: a first switch circuit 1, a voltage divider circuit 2, an energy storage circuit 3, a relay 5, a first unidirectional conduction circuit ...
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The present invention discloses a driving circuit, comprising a first switch circuit, a voltage dividing circuit, an energy storage circuit, a relay, a first unidirectional conduction circuit, a second unidirectional conduction circuit and a second switch circuit, the first switch circuit of the first switch circuit One end is connected to the power supply, the second end is connected to the second end of the voltage divider circuit, and the third end is grounded; the first end of the voltage divider circuit is connected to the power supply, and the second end is connected to the first end of the energy storage circuit; the energy storage The second end of the circuit is connected to the first end of the first unidirectional conduction circuit; the second end of the first unidirectional conduction circuit is grounded; the first end of the second unidirectional conduction circuit is connected to the first end of the first unidirectional conduction circuit. The relay is connected to both ends of the second unidirectional conduction circuit; the first end of the second switch circuit is connected to the power supply, the second end is connected to the first end of the energy storage circuit, and the third end is connected to the second unidirectional conduction circuit. The second end of the circuit is connected. The present invention can still drive the relay to work when the voltage of the power supply is lower than the working voltage of the relay.
Description
technical field [0001] The present invention relates to the field of electronic technology, in particular to a driving circuit. Background technique [0002] With the development of electronic technology, electronic products have been widely used. Among them, the relay is an automatic switching element with isolation function. When the voltage across the coil of the relay reaches the working voltage value, the coil of the relay is pulled in, and the switch of the relay is controlled to switch between open and closed. This characteristic of the relay The relay is usually used in the automatic control circuit, and plays the role of automatic adjustment, safety protection or conversion circuit in the circuit. [0003] When the voltage of the power supply is lower than the operating voltage of the relay, it is usually impossible to drive the relay to work. Contents of the invention [0004] The technical problem to be solved by the embodiments of the present invention is to ...
Claims
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IPC IPC(8): G05F1/46
Inventor 周明杰刘金财
Owner OCEANKING DONGGUAN LIGHTING TECH