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The difference between the relay transistor circuit with self-locking self-locking
Nov 03, 2017

The difference between the relay transistor circuit with self-locking self-locking

Through the relay self-locking normally open contacts in series between the coil and the power button and then parallel, once the button is pressed, the relay is energized to pull, the normally open contact is closed to replace the button conduction, the relay power operating state.

Triode collector and relay coil series, is the use of triode switch characteristics make the relay energized, not self-locking function. The relay coil is connected with high potential, with low potential Emission Triode connected in series with the coil collector, through a certain base current, the triode emitter and the collector conduction relay; there is no current through the base, emitter and collector cutoff relay, can't pull.

Sold on the market with a lamp self-locking switch (delayer) is used in 2 ways: relay self-locking and triode collector and relay coil in series, a delay circuit, circuit button circuit power, triode, relay and self-locking, set time delay circuit to make after the triode the current block, the emitter and collector cutoff relay, release the reset.


Add: No.38 South Taoyuan Road, Yaozhuang Town,Jiashan County, Jiaxing City, Zhejiang Province, China
Contact person: Elva Zhuang&Sunny Ni
Tel:+86-573-84775555
Fax:+86-573-84776699
Phone:+86-13732570078
E-mail:sales9@great-relay.com
       sunny.ni@great-relay.com