This interesting circuit for analog TV selects the first line of a frame. The circuit was found in a 1967 Electronic Design. A modern equivalent transistor can be tried.
This interesting sine wave oscillator circuit for the audio track uses an incandescent light bulb...
This simple battery tester uses two transistors to drive LEDs of different colors, indicating the...
This power supply was found in the 1996 Texas Instruments Linear Applications Manual. The circuit...