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A high-current power supply circuit

2014-11-01 09:21  
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The article describes a high-current power supply circuit. The circuit is very simple, very helpful. If you understand this principle is not very thorough, it is recommended to understand this circuit is an important component: 2N3055 . In this circuit, D1 should be about one volt rating was above the desired output value and supply. Half-watt diode will do. Transistor Q1 can be similar to 2N3055. I chose the 2 n3055 for its availability and power handling (150 watts). T1 should be 5 volts higher than the supply of the required output, and the rated current of one ampere. Voltage overhead is required for some regulatory agencies. Additional current transformer is to keep from overheating. BR1 choice will depend on your current and voltage transformers. Rectifier should be rated at more than 50 volts and 5 amps more than the transformer transformer. The value of R1 will provide high current small. Expiriment until you get what you need. ? Heatsink and fan is absolutely necessary! 


This is the schematic of the High Current Power Supply


PartTotal Qty.DescriptionSubstitutions
R11680 Ohm 1/4 Watt Resistor 
C1120,000 – 50,000uF 20-40 Volt Capacitor 
C2, C32100uF 50 Volt Capacitor 
C410.1uF 50 Volt Capacitor 
C510.01uF 50 Volt Capacitor 
D11Zener Diode (See Notes) 
Q112N3055 Or Other (See Notes) 
T11Transformer (See Notes) 
BR11Bridge Rectifier (See Notes) 
S11SPST 250 VAC 10 A Switch 
MISC1Case, Line Cord, Heatsink For Q1, Binding Posts For Output 



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