- Joined Jan 16, 2012
I have a circuit that is in need of 24+ power regulation and a 7824 regulator in place. I have a power transformer with two windings that is capable of producing 15vac 2A wired in series and after rectifier bridge is putting out 48vdc. I put a 2k dropping resistor before the 7824 and brought the voltage down to 31 volts - the circuit will not power up. I put another transformer producing about 34 vdc 92ma and the circuit powers up. I reviewed the spec sheet for the 7824 and didn't see where I was missing anything. The 7824 produces 1 A output, am I overloading it with the 2 A vs. 92 ma? Any suggestions or a fresh set of eyes - so to speak, would help.