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High Current 12V-13.8V at 30A,25A,20A,15A Power Supply - Elec Circuit
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Simple 12v to 9v with a lm317 circuit diagram
12v to 9v 2a step down dc converter using ic 741 and 2n3055Make this 3.3v, 5v, 9v smps circuit Eeetricks.blogspot.com: 12v dc to 9v dc converter circuit diagram.
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eeetricks.blogspot.com: 12V DC to 9V DC converter circuit diagram
Make this 3.3V, 5V, 9V SMPS Circuit - Homemade Circuit Projects
High Current 12V-13.8V at 30A,25A,20A,15A Power Supply - Elec Circuit
Simple 12V to 9V with a LM317 Circuit Diagram | Circuits Diagram Lab