Part Number: LM723C
Hi!!!
I designed a Lab power supply with LM723(for 0-30V @ 5Ampere),Initially I limited the current at .65 ampere(I limit=o.65V/1 ohm). But the problem is ,the IC is not performing the current limiting operation, even though it had potential difference(Current Sense ReLM723 Regulator .docxsistor) is 5V across its base to emitter transistor which does this current limiting function.
What could be the problem?
1)is with current sense resistor precision?
2) is it with Base emitter junction breakdown with transistor? Because of 5V across it?
I have attached the circuit.Totally confused . Help me in this regard...