This 80's circuitry decodes stereo signals used in analog TV at the time. The circuit can be used with VCRs to retrieve signals for passage on other media. The power supply is 12 V.
This circuit sensor is an NTC with a resistance of the order of 2k. The SCR can be from the TIC...
The load current can be adjusted up to about 1 A. The transistor can be TIP32 or TIP42. The...
This oscillator with common general-purpose transistors appeared in Radio Electronics magazine in...