This sensitive Japanese mid-wave receiver from the 1960s has an output power of 45 mW and is powered by 3 batteries (4.5 V). The circuit is superheterodyne with an IF of 455 kHz.
This is the target for the CB18793E infrared firing gun. The circuit can be powered by voltages from 5...
This circuit is suggested by National Semiconductor and is based on the LM3900, a quadruple...
This circuit was found in a 1978 American publication. It beeps if the car's lights are on and the...