DC Power Supply Variable Regulator 3V to 24V at 3A using LM1458 and 2N3055
Power control is adjustable 3-25 volts and is current limited to 2 amps as shown,but may be up to 3 amps in a small current sense resistor by options (0.3 ohm).
2N3055 transistors 2N3053 and should be in the sinks. very hot right now and resistor should be rated at 3 watts or more. voltage that is controlled by 1 / 2 of the op amp LM1458 or 1458-AMP. It may be substituted in the circuit below, but sources suggest pressure. dispensing pin 8 is limited to 30 VDC, which can increase by 6.2 volt zener or 5.1 resistor K series is 8 pin. maximum voltage DC supply for 1458 and 1558 are 36 and 44, respectively. power transformer should be. As can be expected in the current voltage. Enter at least 4 volts higher than the desired output voltage but not exceed the maximum amount of op-AMP under low load conditions. Transformer is shown as a center tapped 25.2 volt AC / AMP 2 units to help control the 24 volts at 0.7 amps, 15 volts at 2 amps or 6 volts at 3 amps. Output AMP 3 is the center of the water. transformer that changes the 18 volt position. All components must have a Radio shack exception of LM1458 op-AMP.
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