The 555 inducing auto-ventilation controller circuit

Published:2011/5/29 20:02:00 Author:Borg | Keyword: auto-ventilation controller | From:SeekIC

The control circuit consists of sub-circuits of step-down rectifier, sensing amplifier and single steady relay control, etc. The circuit is as shown in Figure 12-35. Figure 12-35 The inducing auto-ventilation controller circuitThe sheet metal,M, is linkdd to the door of the field FET, when someone comes in the sensing area of washing rooms, the sensing signals are delivered to the trigger terminal(2-pin) of the time-based circuit after they are amplified by VT1 and VT2.



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