This Japanese commercial radio with 5 transistors is from the 60s and is powered by 6 V. It is a conventional superheterodyne configuration with good performance.
This circuit mutes a system when a phone call is received. The circuit is from a Radio Electronics from...
The circuit shown is from the National Semiconductor's Linear Applications Handbook. The CI is not...
This circuit was found in a Texas Instruments optoelectronics manual and can work with any...