Published:2009/7/14 3:59:00 Author:May | From:SeekIC
Simple current limiter protects itself from over dissipation during shorted output, while handling capacitor or cold-filament loads that momentarily act like shorts. R3 is adjusted so starting current is high enough to begin heating cold filament. As filament voltage increases to about 100 mV, Q4 and Q3 turn off, allowing load current to rise to 3-A limiting value.- L. G. Wright, Short-Protected Current Limiter Ignores Inrush Currents, EEE Magazine, Sept, 1970, p 89-90.
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