230VAC->5Vdc without transformer
I would like to build a a 5V d.c. power supply for a PIC derived from
the mains supply of 230V A.C. with out using a transformer.
Currently my only idea is to use a couple of 5W ceramic resistors in
series across the mains supply as a voltage divider and use this to
supply a bridge rectifier / three terminal regulator circuit.
Is there a better or more efficient way of obtaining 5V d.c. with a
small compact circuit?
See also: www.piclist.com/techref/power.htm?key=transformer
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