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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 […]

Transistor Tester for repair

Circuit diagram for SCR and Transistor Tester Transistor and Circuit Tester pro- vides accurate measurement of basic transistor and diode characteristics required for quality testing

Power compo audio circuit using STK0050

Power compo audio circuit using STK0050

OpAmp Booster Designs using BC549C, BC550C

Op-Amp Booster Designs using BC549C, BC550C OpAmp Booster Designs using BC549C, BC550C

PRE AMP MIC

PRE AMP MIC 3 TR USING BC550C BC556 BC546 PRE AMP MIC 3 TR USING BC550C BC556 BC546 R1_____________ 1K5 R2_____________ 220K R3_____________ 18K R4_____________ 330R R5_____________ 39K R6_____________ 56R R7,R10_________ 10K R8_____________ 33K R9_____________ 150R R11____________ 6K8 R12,R13________ 100R R14____________ 100K C1_____________ 220nF 63V C2_____________ 220pF 63V C3_____________ 1nF 63V C4,C7__________ 47µF 50V C5,C6__________ […]

Simple Audio led indicator circuit

Simple Audio led indicator circuit using 4017

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