The over-current precaution circuit (current limiting circuit)

Published:2011/7/7 8:27:00 Author:Seven | Keyword: over-current precaution | From:SeekIC

D1 is used to compensate the voltage between the base-electrode of Tr1; D2, R1 and R2 are used for over-current protection of Tr1 and Tr2; R2I is equal to the forward voltage(0.6) of D2, so it is limited.(a) the forward voltage of the diode in use(b) small volume diode as the assistance(c) the PWM spot



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