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Simple flashing annunciator circuit diagram

2017-02-05 03:24  
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Simple flashing annunciator circuit diagram
It only uses three components to form the flashing circuit. When it uses 1.5V supply, it consumes 1.5mA, and the flashing frequency is 1Hz. When the supply voltage rises, the operating current increases slightly, and the flashing frequency is accelerated. The circuit also has alternative uses, when the pin 1 of IC is connected to pin 8, the flashing frequency is increased 3 times. When pin 1 is connected pin 4, the frequency is increased 1.5 times. Also changing the capacitor also can change the flashing rate to 1000Hz.