This circuit is from a 1968 Motorola power circuit manual. The circuit uses transistors of the time. The passing band is 45 Hz to 100 kHz.
Mouser Electronics is now shipping DA14585, a kit for the development of voice remote control...
The presented circuit causes an LED to flash with voltages of 85 to 200 V continuous and has a low...
This circuit for analog video signals was found in a March 1988 Radio Electronics. The Maxim...