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 found this shield circuit in the SGS Integrated Circuits Manual of 1982. The circuit is...
This circuit with transistors and a crystal microphone appeared in Radio Electronics magazine in...
This circuit amplifies the signals in the UHF band starting at 470 MHz, reaching just over 900...