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Where can I get (preferably in Canada for financial and customs reasons) a switch that alternates polarity with a timer or what parts do I need to build? The amount of power is only 3 vdc - 5 pairs of "D" cells in parallel.
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Re: polarity switch
Don't understand... what are you trying to do? -
Re: polarity switch
I want to send a negative charge to an end item for 15 minutes and then switch to a positive charge for 15 minutes ad nauseum - (I could do it manually but I would wear myself on the ad and never make it to the nauseum)
Thanks
AllenComment
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Re: polarity switch
Try a DP-CO relay driven by a transistor and a 555 timer.
Plenty of long delay circuits around. OR could just use a Astable multivibrator with BIG value caps and resistors.Comment
Comment