Using 555 chip to form the sound and light circuit in the electron gun shooting

Memory chip

The work of 555 can be divided into the following three cases: 1. When the input voltage of the trigger input terminal TL is lower than 1/3VCC and the voltage of the threshold input terminal is greater than 2/3VCC, the output of the comparator below is high level, the trigger Output high level; 2. When the input voltage of the trigger input terminal TL is higher than 1/3VCC, and the voltage of the threshold input terminal is less than 2/3VCC, both comparator outputs are low level, and the trigger output remains unchanged; 3. When the input voltage of the trigger input terminal TL is higher than 1/3VCC and the voltage of the threshold input terminal is greater than 2/3VCC, the output of the comparator above is high level, and the trigger output is low level.

Acousto-optic circuit in electron gun shooting

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