MW Commercial Radio Model 1826 (CB18524E)

This 6-transistor radio was sold in Japan in the 1960s. The super-heterodyne circuit for the OM band was powered by ordinary batteries.

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Mixer 741 (CB18633E)
This mixer configuration with the 741 operational amplifier can be found on several other circuits in...
Electronic Machine Gun (CB17369E)
Touching the sensor with your fingers, this circuit produces a machine gun sound. The circuit must...
10 A Automotive Power Source (CB17019E)
This 13.8 V power supply with 10 A was found in a 1997 documentation. It is intended for the...