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Power supply regulator 0-30V 1A by IC 741 Transistor 2N305

2014-11-17 11:31  
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This is circuit power supply regulator variable voltage 0-30V at 1A.
it is old circuit I used IC ua741 or LM741 OP-AMP IC for control adjustable Votage by VR1 (see in image circuit).
The transister 2N3055 is classic part for booster current up to 1Amin.
I used transformer 2A. it big size in PCB but sure current peak 1A min.


Circuit power supply regulator 0-30V 1A by IC 741 Transistor 2N3055 2N3565


PCB power supply regulator 0-30V 1A by IC 741 Transistor 2N3055 2N3565

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