This electronic defense generates a high voltage discharge capable of intimidating an attacker. The circuit was found in the Radio Electronics Experimenter magazine special edition of 1990.
Several analog TV channels operate with stereo audio signals, but the vast majority of receivers are...
Found in old documentation, this circuit uses components that are still common on the market. The...
The LED is optically coupled to the LDR1 sensor to provide negative feedback to the circuit and...