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 circuit drives two-color LEDs at a speed that is set in the 100k pot. The circuit can be...
The circuit shown was found in a 1967 RCA manual. Modern equivalent components can be used. The...
Indicated for automotive applications, this circuit was found in the November 1980 issue of Radio...