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LED flasher circuit diagram

2017-02-05 00:13  
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LED flasher circuit diagram
The two gates of SN7400 four gates form a multivibrator, of which oscillation frequency is very low, so the LED is turned on and off slowly, then you can see the multivibrator working condition from the lamp light turning on and off. The capacity of two capacitors must be the same. This circuit is suitable for teaching demonstration in the classroom, or in science and technology exhibition.