137_V_AT_5_A

Published:2009/7/16 22:45:00 Author:Jessie | From:SeekIC

Output is constant within 0.7 V for AC line range of 98 to 128 VAC, and regulation is within tenths of a volt from 0 to 5 A. Design includes short-circuit, over current, and overvoltage protection. Uses series-pass transistor to increase current-carrying capability of regulator. Transistors are mounted on but insulated from heatsink, C2 is essential to prevent oscillation under certain conditions. Use gallium arsenide phosphide LED. Article tells how to determine exact trip point of SCR crowbar. -B. Meyer, Low-Cost All-Mode-Protected Power Supply, Ham Radio, Oct. 1977, p 74-77.



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