Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: frank57 on December 25, 2010, 11:38:04 am

Title: Can ripple be checked with a multimeter?
Post by: frank57 on December 25, 2010, 11:38:04 am

Is it possible to see how much ripple is on a filter cap using a multimeter?
I can't remember where I saw it but someone mentioned switching to ac volts on the multimeter but didn't get
more specific.

Title: Re: Can ripple be checked with a multimeter?
Post by: tubeswell on December 25, 2010, 11:41:21 am

You could try it I guess.

Title: Re: Can ripple be checked with a multimeter?
Post by: Tiny_Daddy on December 25, 2010, 02:19:16 pm

I get some sort of reading on the AC scale. But I would rather use a scope so I can see peak-to-peak, and frequency (half vs full wave) to check if a diode is out, or if the rectifier is way unbalanced.

Title: Re: Can ripple be checked with a multimeter?
Post by: Fresh_Start on December 26, 2010, 09:20:46 am

My DMM has a max/min and an average function.  Yes, you switch it to measure AC volts.  So you can measure ripple with a DMM... sort of.  A scope or analog meter is much better though.

Cheers,

Chip

Title: Re: Can ripple be checked with a multimeter?
Post by: frank57 on December 26, 2010, 12:08:20 pm

Are these handheld oscilloscopes of any use?
http://cgi.ebay.com/2Msps-sampling-rate-ARM-DSO-Nano-Pocket-Oscilloscope-/270683762446?pt=BI_Oscilloscopes&hash=item3f06026f0e

Title: Re: Can ripple be checked with a multimeter?
Post by: jjasilli on December 27, 2010, 04:47:36 pm

Maybe. checkout:  http://www.el34world.com/Forum/index.php?topic=9667.0