Found in a 1980s manufacturer documentation, this circuit can be used as an optical shield. The integrated circuit is from the era and modern equivalents can be tried out.
March 2017 - Mouser Electronics is sourcing the new Bluetooth Driver CC2564 from Texas...
This circuit is from an 80's publication. It makes use of small 6 V x 50 mA incandescent lamps....
This circuit makes use of the Linear Technology LT6100. We find it in a 2005 company manual. The...