Digital volt/ammeter ? - Printable Version

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Digital volt/ammeter ? - BR60103 - 06-20-2012

I want to put this out to the membership.
Would a volt and ammeter with digital display be practical for a model railroad? I was wondering if the display might bounce around too much to be readable, or if there is some sort of damping mechanism (circuit) that can be fitted.

If it's been done, is there a circuit somewhere that can be used?
What I think I would like is a little box with two displays and four terminals.

Re: Digital volt/ammeter ? - ezdays - 06-21-2012

BR60103 Wrote:I want to put this out to the membership.
Would a volt and ammeter with digital display be practical for a model railroad? I was wondering if the display might bounce around too much to be readable, or if there is some sort of damping mechanism (circuit) that can be fitted.

If it's been done, is there a circuit somewhere that can be used?
What I think I would like is a little box with two displays and four terminals.
A few years ago I wanted to do the same thing and had bought some inexpensive digital multimeters for just that. I decided against it because with two Tech4/250 DC controllers, four meters would take a lot of room to house them all. That, plus the logistics of possibly switching scales, powering the meters and where to put them just discouraged me. I doubt if you'd be seeing a lot of "bounce", but if you're concerned, you could dampen this with a capacitor. That has its drawbacks though, especially with the Tech4 since it is not true DC, but rather pulsating DC. Also, you would only need two terminals out. I can draw you a circuit if you want.

Re: Digital volt/ammeter ? - shortliner - 06-21-2012

David - I think this may be what you want <!-- m --><a class="postlink" href="http://www.trainelectronics.com/Meter_HF/">http://www.trainelectronics.com/Meter_HF/</a><!-- m -->
Jack

Re: Digital volt/ammeter ? - Steamtrains - 06-21-2012

Check this out....I've purchased one and works well. I've yet to install it permanently...
<!-- m --><a class="postlink" href="http://home.cogeco.ca/~rpaisley4/DCCammeter10.html">http://home.cogeco.ca/~rpaisley4/DCCammeter10.html</a><!-- m -->

Re: Digital volt/ammeter ? - BR60103 - 06-21-2012

Look promising.
4 terminals meant 2 in, 2 out Misngth

I was looking for something smaller than the 2 pre-done meters, but I'll look at them.

and down at the bottom of the DCC meters was a DC adaptation.

Thanks.

Re: Digital volt/ammeter ? - BR60103 - 08-19-2012

I saw an ad (in MR?) for a series of meters like this.
Unfortunately, they were designed for DCC but usable to DC and AC. But a heck of a price.

Re: Digital volt/ammeter ? - torikoos - 08-21-2012

you're probably looking at this one: available in several versions, it's pricey but very good.


<!-- m --><a class="postlink" href="http://www.tonystrains.com/products/pop-meters.htm">http://www.tonystrains.com/products/pop-meters.htm</a><!-- m -->

Koos