Need help designing my first power supply!!!!!! URGENT :)

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HebaSerareh

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Hi I am designing my first power supply and I need help in it with schematics. :???::-?

specifications

Vin: 120Vrms @60Hz
Vout: 16VDC @ ±10%
Ripple: 3.00% or better
Imax: 250mA (0.25A)


Thanks
 
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HebaSerareh said:
specifications

Vin: 120Vrms @60Hz
Vout: 16VDC @ ±10%
Ripple: 3.00% or better
Imax: 250mA (0.25A)
Click to expand...
You can use a 12V transformer, followed by a bridge rectifier and smoothing capacitor. The voltage will be a bit low but within 10%. A 13V transformer would be better, if you can find one.

A smoothing capacitor of 4700uF will give about 440mV pk-pk ripple with a load of 250mA.

Last edited by keith1200rs; Today at 07:21. Reason: Removed BOLD & size
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Thanks, I'm sure that saved me some eye-strain. :smile:
 

thanks does this one works SMT mini wideband transformer from coilcraft (13V)
 

No, you need a mains transformer with 115V primary and 12V secondary, rated at 10VA or more. 20VA would be better.
 
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