The high current regulator below uses an additional winding or a separate transformer to supply power for the LM317 regulator so that the pass transistors can operate closer to saturation and improve efficiency. For good efficiency the voltage at the collectors of the two parallel 2N3055 pass transistors should be close to the output voltage. [...]
This is a high quality power supply with a continuously variable stabilised output adjustable at any value between 0 and 30VDC. The circuit also incorporates an electronic output current limiter that effectively controls the output current from a few milliamperes (2 mA) to the maximum output of three amperes that the circuit can deliver. This [...]
Today a friend of me visits at a house. He leads old equipment come to give very plentiful and tell beg for DC power supply 10A circuit. That be simple please , when I sees the equipment that him has had already. Then take this circuit see use 78XX integrated circuits. Have many the number [...]
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