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.
We find this circuit in American documentation from the 1980s. The accuracy of the circuit depends on the...
The presented circuit uses a symmetrical power source to supply an amplifier with the LM139 or...
High quality sound can be obtained from this transistor amplifier. The output transistors must be...