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Panasonic UF-890 Service Manual page 252

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Over Current Limiter
The +24 VDC output is limited by Ton MAX Limiter (ON time period of transistor Q101) which is part of
the control circuit. The +5 VP, -12 VDC and +5 VDC outputs have over current limiters provided inside
the voltage regulator and IC251.
252
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