Products > Test Equipment
Cheap 100:1 2KV Oscilloscope probes - any experience ?
(1/3) > >>
Miyuki:
Hello
I want to ask if you have any experience with cheap high voltage probes from ebay. Will they really work to 1200-1500V ?

I need them for smps diagnosis, yesterday I kill some 600V ones, yes they really die at higher voltage  :palm:  (there was some 1100V peaks and it hold it for short time then to spark gap)
amspire:
I have some Hantek T3100 100:1 100MHz 2KV probes that were pretty cheap, but you have to look carefully at the voltage derating. At 1500V, the maximum frequency is 2MHz. At 20MHz to 100MHz, the maximum voltage is about 400V.

If you are talking about a waveform with a lot of transients or noise, there may be a significant high frequency component. You can get the Hantek probes for about US$20.
Andy Watson:
I have an Isoprobe II  100:1 which I have used with 2.4kV signals - and I'm very happy with it. Sold (a year or two ago) under the name of Multi-Contact.

http://ec.staubli.com/AcroFiles/MA/SZ_RZ043_de-en-fr.pdf
HighVoltage:
I am using the TestTec series HV

Bandwidth:                    300MHz
Input Voltage Max:         2.5kV
Test Probe Attenuation:  100:1

For simple applications, this probe works very well.
MrW0lf:
Have 2x Testec TT-HV 250 100:1

Attenuation Ratio: x100
Input Impedance: 100M?, 4 pF
Bandwidth: 300 MHz
Rise Time: 1,2 ns
Cable Length: 1,2 m
Compensation Range: 10..50 pF
Max. Input Voltage: 2500Vp CAT I, DC incl. Peak AC (derating
with frequency)

Scopes unburned so far.

Edit: Note, I used these only with low-energy HV as per CAT I spec!
"Measurement Category I:
This category is for measurements of voltages from specially protected secondary circuits. Such voltage measurements include signal levels, special equipment, limited-energy parts of equipment, circuits powered by regulated low-voltage sources, and electronics."
Navigation
Message Index
Next page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod