I plan to build this project: 0-30 Vdc Stabilized Power Supply With Current Control 0.002-3 A http://www.electronics-lab.com/projects/power/003/index.html My question is that I must supply this circuit exactly with 24VAC, or I can differ? So in what AC input voltage intervallum can I use this circuit? Thank you, Sala
Ok, finally I replace R1et R1-1 (1K+1K2) by two 2k2 1W in // and it's works very well. The first test are pretty good.
If you want I made a final review when I will finish my Power supply .
The odd things is the fact that the transformer need a small charge (not too small - 30mA) on PCB to works well and on Protoboard it not need a charge at all to make 36VDC...
Thanks audioguru for your answer !