6. CIRCUIT DESCRIPTION
OCP (OVER CURRENT PROTECTION) CIRCUIT
This circuit is designed to protect the circuit from over current due to overload occurred at the rear of 134V line.
1. CONFIGURATION OF OCP CIRCUIT
2. EXPLANATION OF THE OPERATION
There is very little voltage drop at R817,R818(1W 0.51) of 134V line.
In case that the overload occurs at the rear of 134V line, the increase of the voltage drop at R817&R818
bring down the base voltage of the Q801 so as to drive the Q806.
Because of the overload at the rear of the R821, the voltage of the point decreases. And this makes
Q801 turn on so that a voltage is applied to the #25 of I501.
In case that OCP operates by the #25 of the I501, the set is protected by power off. (H_Pulse off)
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ACEC
DAEWOO
