We found this circuit in the 1990 Motorola Linear Databook. The circuit must use symmetric source and has 10times the voltage gain.
The circuit shown here uses a 4047 to produce three signals whose frequencies are determined by C...
This circuit is found in a 1975s documentation for radio amateurs. It was developed to recognize a...
Lumileds LUXEON Infrared LEDs can be purchased from Mouser Electronics in a wide selection of...