We found this circuit in the 1990 Philips Databook. The circuit is a commercial application of the decoder in stereo FM radio receivers.
The circuit is from National Semiconductor's Linear Applications Handbook. The operational...
This circuit is old, causing LEDs to be lit sequentially. Several types of games can be programmed using...
This circuit of the 70's uses transistors of the time. The circuit can amplify signals from 10 Hz...