A mVpp meter?
I need one for some caps I want to change I was told this would work better then using a multimeter since it's related for audio.
My question is it impossible to build? I've never seen a mVpp meter before and google was no help in the search. I was thinking one already built would of been better?
i think that a mVpp meter is the same as an oscilloscope
What exactly, are you trying to measure?
Last edited by crutschow; 10th December 2009 at 07:06 PM.
Carl
Curmudgeon Elektroniker
What you're looking for is called an "AC millivolt meter", but I fail to see what it's got to do with changing capacitors?. You can just as easily use an oscilloscope to do the same job though.
PIC programmer software, and PIC Tutorials at:
http://www.winpicprog.co.uk
I don't have a oscilloscope.. yet I wont be getting one until around Jan.
Also the reason why I need it because I'm working on a hammond organ and it's a 1962's model with wax caps for the tonewheel generator and when you change it you also change the sound because the new parts don't match the ratings of the old one.. so the magnet pickup needs to be adjusted in and out to factory settings.
that's where the meter comes in.. however me being new to oscilloscopes I wonder how should I read it over a analog meter?
An AC voltmeter will work, any old multimeter should be ok. I think I saw some on sale at Sears for about $ 10.00. Just make sure it covers the voltage range you need. I used to work on organs years ago. Some techs I knew would adjust the pickups by ear but using a voltmeter is way better.
By the way what model Hammond are you working on ?
Last edited by Brevor; 11th December 2009 at 06:00 AM.
great someone knows what I'm doing here
it's a A100 havent decided if I wanted to change the tonewheel filters if I do I would need to adjust it.. however one told me a multimeter would not react fast enough.. I mean I have that but they said a Oscope or a mVpp would be better. I chart I have to calibrate is in mVpp
An AC millivolt meter (or oscilloscope) measure audio frequencies and beyond. A normal multimeter is generally designed to only work at 50/60Hz and doesn't give accurate or consistant readings for the audio range.Originally Posted by 1-3-2-4
great someone knows what I'm doing here
it's a A100 havent decided if I wanted to change the tonewheel filters if I do I would need to adjust it.. however one told me a multimeter would not react fast enough.. I mean I have that but they said a Oscope or a mVpp would be better. I chart I have to calibrate is in mVpp
PIC programmer software, and PIC Tutorials at:
http://www.winpicprog.co.uk
I think I will be using a oscilloscope since I will be buying one in Jan but as a newbie to them how would I know what my peak-to-peak voltage is on it over a analog meter?
It's easy to read the p-p voltage off a scope, it's just like reading a graph. Meters don't read p-p, they normally read 'average' - where it's calibrated to give an RMS reading for a sinewave only.
PIC programmer software, and PIC Tutorials at:
http://www.winpicprog.co.uk
