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Power Resumption Alarm and Low-Voltage Protector

Power Resumption Alarm and Low-Voltage Protector

C3

470μ

40V

LED3

230V

AC

X1 = 230V AC PROMARY TO

12V-0-12V, 300mA

SECONDARY

TRANSFORMER

X1

D2

1N4007

Vcc

P

N

+

+

GND

R9

1M

PZ1

PIEZO

BUZZEER

D3

1N4007

D4

1N4007

C4

470μ

40V

Power Resumption Alarm and Low-Voltage Protector

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publish time: 2020-09-18
Circuit Everyday

The circuit described here protects your appliances from damage due to low voltage when switched on (for example, AC motors). Keep it in the standby state, and do not supply power to the load after power-on, and can only turn on the load manually. This can prevent damage to the device and turn it on when power is restored.

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