As shown in figure, the power supply uses an LM350 type variable regulator. The IC in a TO-3 package and resembles the common 2N3055 and AD149 transistors. VR1 provides voltage control.R1,D2 and C2 are the accompanying components. The input voltage is obtained from an 30 volt source such as a transformer etc. The diode D1 provides a path for C3 to discharge when the power is turned off. The output wires carry heavy currents, so adequate care must be taken to ensures the use of thick wires and terminal to prevent failures.A standard transistors type heat-sink must be used.
Monday, October 18, 2010
3A Universal Power Supply
As shown in figure, the power supply uses an LM350 type variable regulator. The IC in a TO-3 package and resembles the common 2N3055 and AD149 transistors. VR1 provides voltage control.R1,D2 and C2 are the accompanying components. The input voltage is obtained from an 30 volt source such as a transformer etc. The diode D1 provides a path for C3 to discharge when the power is turned off. The output wires carry heavy currents, so adequate care must be taken to ensures the use of thick wires and terminal to prevent failures.A standard transistors type heat-sink must be used.
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