Can anyone help work out what characteristics diode D4 should have in this circuit diagram for a wind generator control board...?
My initial guess is that it's protecting U1 (a voltage regulator?) from discharge currents from C4. Does that sound right...?
Member of Go Free Range software coop; Ruby developer; author of Mocha Ruby library; sailing & telemark skiing; former Antarctic winterer; proud Green Party member & Remainer.