TELCO S/P ckt 4 E77 DEMO dwg-7

TELCO: S/P ckt 4 E77 DEMO page S/P R-01 2....dwg-6 Sixth aqnd final simplification: Series: RT=Req5 + R7, drawing-7 RT = 4 + 16 Ohms = 20 Ohms And, you can calculate IT=Et/RT IT= 50V/20 Ohms = 2.5 Amps which is the KEY TO FINDING EVERYTHING ELSE, GOING BACKWARDS. Series means: EReq5=EReq3=IReq4.