On Tue, Aug 11, 2009 at 09:31:20PM +0900, Philip Lord wrote: > Update: > With the red leads detached from the capacitor I tested the voltages > again this evening. > Where as before I was getting over 8VDC, now I'm only getting 0.5VDC on > the cathode side of the diodes...very strange. I wish I knew what was > going on. > Maybe it's time to start by removing the diodes and testing them. It of course suffices to desolder just one end of each diode. I don't have much experience in analog electronics, but I can imagine that open-circuit or short-circuit diodes in the bridge could cause all sorts of failures. For what it is worth, a MOSFET rectifier bridge that I built for my bicycle failed in a similar way after it apparently got some over-voltage from the dynamo. Luckily there was a Schottky diode between the MOSFET bridge and the rest of the circuit, so that everything else (including the mobile phone) was unaffected. The circuit would only deliver some .5 or 1.5 volts instead of the designed 5 volts. Marko Message was sent through the cbm-hackers mailing listReceived on 2009-08-11 16:05:40
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