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Posts tagged Dual

STK439 Circuit

Audio Amplifier Circuit Using STK439

Transformerless Power Supply circuit diagram

Transformerless Power Supply circuit diagram 240VAC to 5V DC Power Supply using 7805 18V 1A Power Supply using LM350T, LM7818 2 Way To Build A Negative Bias Supply +5v Power Supply using 7805, LP3872ES Variable Dual Lab Power Supply 2 This low noise audio power supply circuit can reduces noise and ripple voltage by 40dB […]

Circuit Diagram 15W EL84 Power Amp and a Transformer power supply Schematic

Circuit Diagram 15W EL84 Power Amp and a Transformer power supply Schematic Circuit Diagram 15W EL84 Power Amp and a Transformer power supply Schematic

Resolve a cramped raster on SONY TV KV21GPX?

Ouman asked: I have replaced the vertical deflection IC and checked all possible capacitors and resistors. Still no luck. No circuit diagram. American origin. Thanks Pete. I do remove caps and test with proper cap tester. Will follow your advice. Middle to top cramp with bit of a foldover on top. Frustrating! I keep grinding […]

Time Delay Circuit Diagram

Time Delay Circuit Diagram using 1N4007, 2SC2008, 2SA953

Audio amplifying

Audio amplifying circuit using KA2214

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