This circuit allows you to adjust the balance between channels of a stereo amplifier. The circuit makes use of an analog indicator with zero in the center of the scale.
This simple circuit makes use of a buzzer with a 6 V oscillator, compensating for the 2 V voltage...
This receiver for the police band, which at the time was 45 MHz, was found in a publication by...
This car alarm was found in a 1965 General Electric manual. The SCR can be commonly used with the...