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Products => Test Equipment => Topic started by: analog8484 on May 23, 2023, 07:56:43 pm

Title: Seeking scope/probes recommendations
Post by: analog8484 on May 23, 2023, 07:56:43 pm


Can anyone recommend the least expensive 4-channel scope/probe sets that can provide accurate/reliable real-time analysis of IGBT/MOSFET switching/conduction losses for switching frequency up to 30KHz with AC mains voltages and current up to 30Arms?

Any help would be appreciated.
Title: Re: Seeking scope/probes recommendations
Post by: wasedadoc on May 23, 2023, 08:05:45 pm
Is this analysis to be done in situ on a prototype equipment design that will be handling AC mains?  Or do you want to characterise the devices when switching the voltage levels and currents you mention?
Title: Re: Seeking scope/probes recommendations
Post by: analog8484 on May 24, 2023, 07:15:42 pm

It's for a live dev system.
Title: Re: Seeking scope/probes recommendations
Post by: tautech on May 24, 2023, 09:01:17 pm
Siglent offer such for their 2000X HD series however not cheap and it includes PA license which of course is useless if you don't have one of these models.
https://siglentna.com/product/power-bundle-1-5-kv/
Title: Re: Seeking scope/probes recommendations
Post by: analog8484 on May 25, 2023, 03:59:00 pm

Thanks.  At least it's a reference point.
Title: Re: Seeking scope/probes recommendations
Post by: tautech on May 25, 2023, 08:18:37 pm
Quote from: analog8484 on May 25, 2023, 03:59:00 pm

Thanks.  At least it's a reference point.
But not much of one as it covers nearly bases for PA which is probably far more than than normal needs.

Are you starting from a clean sheet and need all of the above package ?
What exactly would be your requirements ?
Title: Re: Seeking scope/probes recommendations
Post by: analog8484 on May 26, 2023, 06:09:31 pm
Quote from: tautech on May 25, 2023, 08:18:37 pm

Are you starting from a clean sheet and need all of the above package ?
What exactly would be your requirements ?

Don't need everything in the package.  The main requirement is to accurately measure switching and conduction losses in real time to evaluate different driver and IGBT/MOSFET devices/configs in a power converter.  So, channel de-skew support is a minimum requirement.