Hi,
I am building a power supply and I have a weird effect happening on the input part:
I am using 120V , 60Hz input to a step down transformer (stepping down to 30 volts) and then a diode bridge to a 10,000uF filter cap. This serves as the input to the rest of my power supply circuit.
The input to the diode bridge is 30 volts and the output is 40 volts.. I am using a diode bridge IC. I tested the transformer and the diode bridge outside of my circuit and it worked perfectly without a 27 volt output (predicted from voltage drop of diodes). But how am I getting 40 volt output? Could it have something to do with my enormous 10,000uF cap?
See attached schematic.
Thanks,
Surfline
I am building a power supply and I have a weird effect happening on the input part:
I am using 120V , 60Hz input to a step down transformer (stepping down to 30 volts) and then a diode bridge to a 10,000uF filter cap. This serves as the input to the rest of my power supply circuit.
The input to the diode bridge is 30 volts and the output is 40 volts.. I am using a diode bridge IC. I tested the transformer and the diode bridge outside of my circuit and it worked perfectly without a 27 volt output (predicted from voltage drop of diodes). But how am I getting 40 volt output? Could it have something to do with my enormous 10,000uF cap?
See attached schematic.
Thanks,
Surfline
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