This is a 1946 post-war model radio. The 3-tube receiver has a long-known tube configuration.
This circuit, which can be used as a shield, was found in a 90s Electronic Design. The circuit...
This 3-transistor buzzer or buzzer is a classic type found in the July 1998 issue of Electronics Now...
The two previous circuits show the INA185 a current sensing amplifier in basic applications. This...