One of the rechargeable time relay circuits
Source: InternetPublisher:吃掉星星 Keywords: time relay relay circuit switch transistor Updated: 2020/10/13
One of the rechargeable time relay circuits
It can energize the load Rfz after the travel switch
(or button) so is turned off, and delay
the power loss after sQ is disconnected. The delay time is determined by Ri, C and RP.
Since the transistor VT3 is used as the switching element,
the load is not large. If 3DG130 is selected, the maximum load
current reaches 300mA.
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