I need to build a regulated 48VDC ~1amp power supply.
I have two transformers on hand: One with a 36VAC secondary which would give around 51 volts DC once rectified The other with a 44VAC secondary which would give around 62 volts DC once rectified
Now, feeding the LM317(HV) with 51 Volts DC doesn't give enough headroom to my taste if we consider the regulator voltage dropout and house voltage variations.
Feeding the LM317(HV) with 62 Volts DC would exceeding regulator's input-to-output max voltage.
While searching the internet for solutions, I found an application note on TI Website about "Maida High Voltage Regulator" (floating regulator).
Now my questions:
- On the schematic, Vin is 170Volts. Can this schematic be used with much lower voltages (let's say 60VDC)
- According to the schematic, Output current is 25mA but I need around 1 Amp. Do I need to modify something to get 1 Amp output ?