This stage of IF to 455 kHz operates with voltages from 1.5 V. We find it in a 90s Popular Electronics. The integrated circuit is uncommon today.
This shield circuit allows recording of the signal from a serial output on a cassette recorder, with...
The model aircraft spark plug filaments operate with a low voltage of the order of 1.5 V. This...
This circuit, found in US documentation, can measure the power of transmitters up to 10 W, given...