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 was obtained from a National Semiconductor manual from the 1990s. The circuit employs a...
This circuit causes an LED to flash at a frequency determined by capacitor C1. The circuit can be...
Suggested by Fairchild in a 1980s publication, this multiplier uses operational amplifiers from that...