« previous next »
Pages: [1]   Go Down

Author Topic: Exceeding attenuator max input voltage  (Read 471 times)

0 Members and 1 Guest are viewing this topic.

Offline ksat44Topic starter

  • Contributor
  • Posts: 22
  • Country: us
Exceeding attenuator max input voltage
« on: May 04, 2022, 09:53:01 pm »
Like the title says, I was just curious what could happen if the volts happen go above what's rated for the attenuator.  I wanted to use the 20:1  Hantek and connect to an automotive primary ignition, which I've heard can sometimes exceed the stated 300V limit on the device. 
Logged
 

Offline bob91343

  • Super Contributor
  • ***
  • Posts: 2675
  • Country: us
Re: Exceeding attenuator max input voltage
« Reply #1 on: May 05, 2022, 01:48:13 am »
It could overheat and change in value or, worse, burn out.
Logged
 

Online bdunham7

  • Super Contributor
  • ***
  • Posts: 7860
  • Country: us
Re: Exceeding attenuator max input voltage
« Reply #2 on: May 05, 2022, 02:10:45 am »
The HT-201?  It says it is designed for primary ignition, so it should be fine on any normal system (maybe not CDI) even if the peaks exceed 300V--which they often do.  I don't see this 300V limitation--what exactly does it say?
Logged
A 3.5 digit 4.5 digit 5 digit 5.5 digit 6.5 digit 7.5 digit DMM is good enough for most people.
 

Offline Circlotron

  • Super Contributor
  • ***
  • Posts: 3180
  • Country: au
Re: Exceeding attenuator max input voltage
« Reply #3 on: May 05, 2022, 03:10:41 am »
The voltage rating will probably  be frequency dependent. I've blown up two 400V rated probes with a 450V pulse that had a 1uS rise time.
Logged
 
The following users thanked this post: Ian.M
Pages: [1]   Go Up
« previous next »

Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf

 


EEVblog Main Site EEVblog on Youtube EEVblog on Twitter EEVblog on Facebook EEVblog on Odysee