Author Topic: High Voltage Probe  (Read 4217 times)

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Offline rkunglTopic starter

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High Voltage Probe
« on: September 25, 2011, 03:04:03 am »
I'm looking for a high voltage probe to use with a tektronix TDS3032 up to say 5,000V or up to 10,000V.

I found the P6015A but its like $1000, anyone know of anything cheaper?
 

Offline tekfan

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Re: High Voltage Probe
« Reply #1 on: September 25, 2011, 11:05:30 am »
If you want to measure DC then you can get away with one of those HV probes and a multimeter.

If you want to measure AC then the only option is a HV oscilloscope probe like the P6015A. There was also the P6015 (without the A) model that required a freon dielectric to safely meaure beyond 12 KV. These quite often come up on ebay but don't expect to pay below 300 USD
One can never have enough oscilloscopes.
 

alm

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Re: High Voltage Probe
« Reply #2 on: September 25, 2011, 11:27:52 am »
I believe someone on the TekScopes list tested a HV probe designed for DMM's, I think the bandwidth reached somewhere in the kHz range.

The Tek P6013, which is basically the same as the P6015 without the almost unavailable freon, may also be available used. I would be vary careful with trusting cheap knock-off probes with these kinds of voltages. Maybe HP/Agilent or Lecroy have similar products? Of course you'd also have to inspect a used probe carefully before exposing it to dangerous voltages.

Watch the voltage derating of probes, even a P6015A is not designed for 10kV RMS at 10MHz.
 

Offline rkunglTopic starter

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Re: High Voltage Probe
« Reply #3 on: September 26, 2011, 06:51:09 am »
What about a probe that'll measure up to 500V?  The probe I am currently using is rated to 150V.  The signal will be approx 40-200V, 1-10khz, various waveforms (square, sine)
 

Offline Psi

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Re: High Voltage Probe
« Reply #4 on: September 26, 2011, 07:20:04 am »
wasn't there a video on here a while back about building your own high voltage probe ?
Greek letter 'Psi' (not Pounds per Square Inch)
 

Offline Lightages

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Re: High Voltage Probe
« Reply #5 on: September 26, 2011, 01:46:21 pm »
What about a probe that'll measure up to 500V?  The probe I am currently using is rated to 150V.  The signal will be approx 40-200V, 1-10khz, various waveforms (square, sine)

Well that is quite the drop from 5kV!

I have a couple of these:
http://www.dealextreme.com/p/250mhz-oscilloscope-probe-max-1200v-35610
and they seem well enough made but I have no way to test their safety or voltage rating.
 

Offline vk6zgo

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Re: High Voltage Probe
« Reply #6 on: September 27, 2011, 02:39:18 pm »
What about a probe that'll measure up to 500V?  The probe I am currently using is rated to 150V.  The signal will be approx 40-200V, 1-10khz, various waveforms (square, sine)

If the signal is 40-200V,why do you need 500V?

Ordinary 10X Tektronix 'Scope probes are commonly used at around 400V or so.

The original 5-10KV requirement is available for DMMs at a reasonable price,but once you get to  those levels with Oscilloscope probes,the cost goes up steeply.
VK6ZGO
 


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