With this circuit from Popular Electronics it is possible to determine the characteristics of a microammeter or common milliammeter using a multimeter.
Found in documentation from the 1980s, this circuit uses components from that time. The circuit is...
This transmitter uses a small loudespeaker (FTE) as microphone and can send the signals to...
This circuit was found in a 1970's Radio Electronics. The pulse transformer has a 1: 1 turn ratio....