Time delay switch circuit and dual-power-source selector switch device with same
A technology of time-delay switch and circuit, applied in the direction of circuit device, circuit, emergency power supply arrangement, etc., can solve problems such as switching switch device or power supply damage
Active Publication Date: 2014-04-30
惠州莫思特科技有限公司
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Problems solved by technology
[0002] In the circuit, the path connected with the load often uses a switch device to control the connection and disconnection of the load and the power supply, especially a dual power switch device, because the distance between the contacts in the switch device is relatively close, in The moment one of the power sources is disconnected creates an arc which electrically connects the two contacts causing serious damage to the diverter switchgear or the power source
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[0036] see figure 1 , which is a functional block diagram of a delay switch circuit 10 in a preferred embodiment of the present invention, including: a first connection terminal 100 , a delay control module 200 , a rectifier bridge 300 , a controllable switch module 400 and a second connection terminal 500 .
[0037] The rectifier bridge 300 is used to convert the AC current of the first connection terminal 100 into a DC current. The delay control module 200 is used to delay charging according to the direct current, and send a control electric signal to the controllable switch module 400 when a preset charging condition is reached. The controllable switch module 400 is used for connecting the first connection end 100 and the second connection end 500 as a path in response to the control electric signal.
[0038] Specifically, in this embodiment, the controllable switch module 400 is a three-terminal component, one of which is a control terminal for controlling the on and off ...
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A time delay switch circuit comprises a first connecting end, a time delay control module, a rectifier bridge, a controllable switch module and a second connecting end. The rectifier bridge is used for converting alternating currents of the first connecting end to direct currents, the time delay control module is used for carrying out charging time delay according to the direct currents and sending control electric signals to the controllable switch module when the preset charging condition is achieved, and the controllable switch module is used for responding to the control electric signals to enable the first connecting end and the second connecting end to be connected. The invention further provides a dual-power-source selector switch device with the time delay switch circuit. According to the time delay switch circuit, the rectifier bridge, capacitors and the controllable switch module are used for achieving the effect that a switch is hysteretic through currents, electric arcs generated in contact are avoided, and better safety is achieved.
Description
technical field [0001] The invention relates to a switch circuit, in particular to a time-delay switch circuit and a dual-power switching device using the time-delay switch circuit. Background technique [0002] In the circuit, the path connected with the load often uses a switch device to control the connection and disconnection of the load and the power supply, especially a dual power switch device, because the distance between the contacts in the switch device is relatively short, in The moment one of the sources is disconnected creates an arc which electrically connects the two contacts and can cause serious damage to the diverter switchgear or the source. Contents of the invention [0003] Based on this, it is necessary to provide a safer time-delay switch circuit and a dual-power switching device using the time-delay switch circuit. [0004] A delay switch circuit, comprising: a first connection terminal, a delay control module, a rectifier bridge, a controllable sw...
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IPC IPC(8): H03K17/292H02J9/06
Inventor 王晓元
Owner 惠州莫思特科技有限公司