nestorags Posted August 6, 2004 Report Share Posted August 6, 2004 Hi I need some help!!Im using a 9v battery to power a transformer but the transformer only works momentarily how can i make it work continuously(or however you spell it) or i need to change the power source to D or C batterysThanks a lot your help will be appreciated :) Quote Link to comment Share on other sites More sharing options...
harsh Posted August 6, 2004 Report Share Posted August 6, 2004 hi nestorages,this is the deal, u cant use a transformer with Direct Current ( DC )from a battery.here is whya transformer only works with Alternating Current ( AC ).if you were to touch the battery to the windings of the transformer and removed it ,u might notice a little spark, that spark is caused by the collapsing magnetic field. same principle as the automotive ignition system.hope this helps.. Quote Link to comment Share on other sites More sharing options...
audioguru Posted August 6, 2004 Report Share Posted August 6, 2004 Hi Nest,Do you want to step-up the voltage of your battery?I will add to Harsh's reply with an example:A camera's flash needs a high voltage, but has only a low-voltage battery. You know the whining sound that the camera makes just after one flash but before the next? That sound (not the film advance motor noise) is made by a high-power oscillator that has an AC output, which feeds into a stepup transformer to produce a high AC voltage. If the high voltage must be DC, the tranformer's output is rectified and filtered.If you connect a battery directly to a transformer, the battery will quickly be drained, because with DC, the transformer is just a piece of wire (dead short). Quote Link to comment Share on other sites More sharing options...
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