Making a simple AC/DC power supply

Forum 2005-2010 (read only) General Frequently-Asked Questions
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4 x diode = bridge (1N4007 for example). Capacitor 470 - 1000uF for min. 30 * sqrt(2) = 42V, use 50 or 63V.
7805 blocked with two 100nF caps, in series with a power zener diode (12 - 15V / 5W) because max input is 35V and you have 42.