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RE: Short circuit/Control Panel - 220 V relay coils



Subject:  RE: Short circuit/Control Panel - 220 V relay coils
  Date:   Tue, 10 Jun 1997 11:43:52 -0500
  From:  "Robert W. Stephens" <rwstephens-at-headwaters-dot-com>
    To:   Tesla List <tesla-at-pupman-dot-com>


> Date:          Sat, 07 Jun 1997 19:13:46 -0500
> To:            tesla-at-poodle.pupman-dot-com
> Subject:       RE: Short circuit/Control Panel - 220 V relay coils
> From:          Tesla List <tesla-at-pupman-dot-com>

> Subject:  RE: Short circuit/Control Panel - 220 V relay coils
>   Date:   Sat, 7 Jun 97 06:19:21 UT
>   From:   "William Noble" <William_B_Noble-at-msn-dot-com>
>     To:   "Tesla List" <tesla-at-pupman-dot-com>
> 
> 
> just a comment - a coil rated 220 VAC will work fine if you build a
> simple 
> bridge rectifier and give it 110 DC - add a capacitor (filter) of 20 to
> 100 
> microfarads to keep the coil from buzzing and to give it a bit more
> voltage.
> 
> snip  -----
> . Be aware that most of
> the contactors out there are using 220 volt relay coils. If that is
> all you can find (and you need a 110 type), then get a 110 to 220
> volt transformer to power the coil. The contacts can be used for
> either 110 or 220.
> snip
> 
 
Bill,

That's a darned good idea!  Actually that bridge rectifier with a 
capacitor will charge to some ~170 volts (1.414 times 120 volts RMS).  

I'm thinking here that 180 volts on a 220 volt device is like me getting
a 
$180,000.00 settlement from a $220,000.00 lawsuit. Given that kind of 
free money to spend on Tesla coiling you'd find me clicking up and 
down just fine! : )

rwstephens