Smoke alarm circuit (4)
Source: InternetPublisher:他们逼我做卧底 Keywords: Smoke alarm alarm circuit transformer Updated: 2020/05/10
Working principle of the circuit: The power supply part adopts transformer T to step down, VD1 and VD2
diodes for full-wave rectification, electrolytic capacitor C for filtering, and after being stabilized by the voltage stabilizing diode DW,
a DC voltage of about 12 V is output for circuit use. HQ-2 is a smoke detection
device .
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