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|    sci.electronics.basics    |    Elementary questions about electronics    |    72,318 messages    |
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|    Message 71,714 of 72,318    |
|    Bob Engelhardt to Arie de Muynck    |
|    Re: Power in use indicator please ?    |
|    07 Jun 20 12:02:00    |
      From: BobEngelhardt@comcast.net              On 6/7/2020 9:23 AM, Arie de Muynck wrote:       > On 2020-06-07 14:07, Bob Engelhardt wrote:       >> On 6/6/2020 3:35 PM, Pimpom wrote:       >>> This should work:       >>> https://www.dropbox.com/s/ablk0cc0iqfhsta/Load%20presence%20       ndicator.png?dl=0       >>>       >>>       >>> Diodes D1-D4 must be able to handle the load, including startup current.       >>       >> I like it. KISS. A small point: only need one of the D3/D4 pair.       >       > That would produce a small amount of DC in the pump voltage. Shaded pole       > motors are very sensitive to that - with some DC you can easily use them       > as brake. Better "Keep It Symmetrical [and] Safer".       >       > Arie              That's because the AC voltage in one direction would be a diode drop       different from the other direction? So the dc voltage would be equal to       the diode drop, or is it more complicated than that?              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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