Position: Index > Control Circuit >

Automatical opening and stopping control circuit of fish tan

2015-03-02 05:59  
Declaration:We aim to transmit more information by carrying articles . We will delete it soon, if we are involved in the problems of article content ,copyright or other problems.


Automatical opening and stopping control circuit of fish tank water pump
It uses two 555 -based circuits. Its peripheral circuits have a similar structure, and the closed loop is formed by cross- connected capacitors C5 , C3. The device running has two states: working state and intermittent state. In order to guarantee the device's working condition, R3 and C2 form a reset circuit on IC1's 4 feet. This circuit smallest intermittent is half of an hour, and the maximum intermittent is 3h. According tohe R10 values ​​given in Figure, the pump working time is 25min ~ 30min.