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Re: [TCML] China meters, completed control cabinet



I used Chinese panel meters for my 34 kV DC PSU controller, and they worked great! Cheap as sh!t and they are very adaptable. While my cap bank doesn't put out as much "noise" as a Tesla coil, these meters seem to be pretty bullet proof.

Adam

--- On Wed, 3/11/09, Jim Mora <wavetuner@xxxxxxxxx> wrote:

> From: Jim Mora <wavetuner@xxxxxxxxx>
> Subject: [TCML] China meters, completed control cabinet
> To: "'Tesla Coil Mailing List'" <tesla@xxxxxxxxxx>
> Date: Wednesday, March 11, 2009, 8:26 PM
> Hi Group,
> 
>  
> 
> Has anyone tried the China made panel meters? The
> illuminated blue
> background ones look sharp. I have set up three analog
> meters, 0-300Vac,
> 0-75Aac, and 0-15Aac. Thanks goes out to Bert Hickman for
> teaching me
> indirectly (like learning to fish) how to shunt a meter!
> Seems foreign
> calculating the resistance of #6awg and cutting it to
> 6" or so for a
> resistor; silver bearing solder changes the lug
> resistance!! 
> 
>  
> 
> I am wondering if the digitals would survive the EMI and HF
> transients that
> manage to make it back to the control cabinet (hopefully
> not much). I will
> have the analogs online as well. A cheap goose neck halogen
> desk lamp was
> disemboweled and mounted to the frame that is on a dimmer
> like a DJ setup to
> see the meters and controls. I am ready to move on to the
> HV cabinet now.
> Hurray!
> 
>  
> 
> I'll post a couple of pictures on the web so the
> younger folk can see old
> school ;-) The schematics are similar to others with the
> usual contactor's
> latch, emergency stop mushroom, dead man switch, filters,
> and the addition
> of a PWM ASRG circuit. Current control is a sat reactor
> driven by a small
> rectified variac, Voltage control is via a Superior 1256D
> that is
> horizontally stackable-all in a 28" high 19"
> rolling rack mount caninet.
> Everything stays cool at > 60amps for several minutes
> into several turns of
> #10 wire. The sat reactor buzzes like crazy but stays
> ambient. It was
> scrounged out of a scientific oven with 5000 hours on it. I
> guess the
> windings are loosened and rattling. I'd love to
> submerge it in something. It
> has a silicon steel wound type of core.  Anyone have ideas
> on that? Thanks
> Jack for the find!
> 
>  
> 
> Looking for bigger sparks!
> 
> Jim Mora
> 
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla


      
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