This circuit was obtained from National Semiconductor documentation from the 1990s. The circuit has a passband of 300 kHz.
Suggested by General Electric in a 1970 document, this circuit uses a LASCR, or SCR fired by...
This circuit was found in February 1976, Radio Electronics magazine. The circuit is powered by 12 V...
This circuit uses LDRs as sensors and can either detect the incidence of light on the sensor or...