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RE: [TCML] Tesla Coil remote



I would have to agree with the suggested use of fiber. I am using it for a vary simple PWM control for my ASRSG. No issues with noise from the coil so far. And it really isnt so bad having to deal with that thin fiber cable.

If you choose to continue to pursue wireless you will need to properly shield the controller and filter out all but the desired 433MHz on the reciever end. Assuming your coil isnt outputting any noise on that frequency.

Best of luck,
Matt


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-------- Original message --------
From: Henry Hurrass <dr.hankenstein@xxxxxxxxxxxxx> 
Date: 03/10/2013  1:30 PM  (GMT-08:00) 
To: 'Tesla Coil Mailing List' <tesla@xxxxxxxxxx> 
Subject: RE: [TCML] Tesla Coil remote 
 
On a solid state coil the receiver is actually part of the coil and runs
either off the AC mains or aux power and is controlled by a fiber link. I
have not seen this arrangement to cause any particular issues. Some people
like batteries, I don't. They wear out then you have to buy new ones.



-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of Dave Leddon
Sent: Sunday, March 10, 2013 1:10 PM
To: Tesla Coil Mailing List
Subject: Re: [TCML] Tesla Coil remote

I would connect the receiver to the coil using fiber optic cable and then
place that receiver some distance from the coil.  I would also run the
receiver from batteries to provide further isolation.
Dave
At 06:32 AM 3/10/2013, you wrote:
>On 3/9/13 8:04 PM, james hutton wrote:
>>
>>So I am looking at using a remote for turning my coil on and off.I 
>>made a remote using 433mhz rf transmitter/receivers for the 
>>coil.However as soon as the coil is on, it interfiers with the remote 
>>(which was anticipated.)
>
>Yes.. the inexpensive remote controls tend to be less EMI immune than 
>one might hope.
>
>
>I tried making a faraday cage around the
>>receiver, however still no luck.
>
>Well, the faraday cage will also shield the desired 433 MHz  (although, 
>I can imagine building a cage with holes that are sized to pass the 433 
>M, but not let in the 100kHz (and copious harmonics).  Or building a 
>suitable filter.
>
>Do you have the receiver schematic and design info?  What I would do is 
>put the receiver in a metal box with a decent coax connector.
>Then have a good high pass filter in another box with the antenna.
>
>One problem you'll have is that most spark gap TCs radiate a fair 
>amount of VHF noise (from the wires going to/from the primary spark 
>gap, I believe).
>
>
>How is the receiver connected to the "power switch".  you might be 
>getting noise back through the AC line into the receiver as well.
>
>I know there is the option of IR, but
>>I wanted to avoid making it an IR remote because then there is much 
>>less range and you need to point the remote at the receiver.Has anyone 
>>ever made a remote for their coil successfully that was not infrared?I 
>>am also thinking of using an IR laser diode as apposed to a typical IR 
>>led if I must make the remote IR.I wouldnt be focusing it with a lens, 
>>I just think that since the laser diode is much brighter and more 
>>powerful than an led it would give me much more range.And I would 
>>obviously need a driver to power the laser diode that can handle the 
>>IR pulses sent from the microprocessor.thoughts?
>
>What might work better is building something like an IR flashlight. 
>Gang up a bunch of IR LEDs in series and a driver transistor and a 
>bigger battery.
>
>
>
>
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