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Renewable Energy Questions/Discussion => Automation, Controls, Inverters, MPPT, etc => Topic started by: niall on January 22, 2012, 05:24:30 pm

Title: soundcard Oscilloscope ?
Post by: niall on January 22, 2012, 05:24:30 pm

looking at Burnit,s thread and drooling over his Oscilloscope , i,m wondering if some of the freeware software scopes are usable for a similar function of looking at mosfet,s fiddely bits ....

heres one of such ....http://www.zeitnitz.de/Christian/scope_en

seems the sound card limits the max  v input   (.7v)  or else it might go pop....but if as in the link above suggested a V divider is used ..it might give a similar performance level ?

say if a fet gate was being pwm,d at 18v.....and a divider of 20k to 1k used to sample the signal..

does anyone have any experiance of using a software scope ?

 

Title: Re: soundcard Oscilloscope ?
Post by: madlabs on January 22, 2012, 06:43:43 pm

I messed with a souncard 'scope a few years back and wasn't too impressed. It was a while ago though and I only tried the one. There are some pretty cheap digital 'scopes out there now, if you can scrounge the cash I'd go for one of those.

Jonathan

Title: Re: soundcard Oscilloscope ?
Post by: niall on January 22, 2012, 07:19:37 pm

thanks Jonathan...

i,ll take it with a pinch of salt then .... ;)

Title: Re: soundcard Oscilloscope ?
Post by: Burnit0017 on January 22, 2012, 09:41:13 pm

Hi, the scope was purchased on eBay. It was very low cost. I was surprised how many are available.     

Title: Re: soundcard Oscilloscope ?
Post by: niall on January 22, 2012, 09:52:22 pm

thanks Burnit.....

when funds allow i,d really like to get one .....