dbflyer Posted May 12, 2015 Share Posted May 12, 2015 I have a Ripmax (Pro-Power) lead acid cell of 2 volt and 4 Ah capacity. I bought it to power my glow plugs but inevitably at 2 volts it is blowing plugs. Is there a way, other than a big coil of wire, to neatly drop the voltage down to 1.5volts? Quote Link to comment Share on other sites More sharing options...
The Wright Stuff Posted May 12, 2015 Share Posted May 12, 2015 Hi dbflyer, I'm not sure of either your electronics experience or budget, but if you are comfortable with a soldering iron and can get to Maplins, then a voltage regulator and a couple of resistors should be all you need to do it neatly and cheaply... TWS Quote Link to comment Share on other sites More sharing options...
Jim Mchugh Posted May 12, 2015 Share Posted May 12, 2015 Another technique would be to use a silicon diode in series with the positive rail. Silicon diodes provide a volt drop of between 0.5v and 0.7v on DC rails. This silicon diode from Maplins **LINK** only costs 59p and will give a 0.7 volt drop. 2.0 volts from battery minus 0.7 volts drop from diode equals 1.3 volts at the glowplug... Make sure you test it with your multimeter and confirm the final voltage. Edited By Jim Mchugh on 12/05/2015 14:11:15 Quote Link to comment Share on other sites More sharing options...
dbflyer Posted May 12, 2015 Author Share Posted May 12, 2015 Many thanks for the above, I will get to Maplins in the morning Quote Link to comment Share on other sites More sharing options...
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