MOTM

Hi all,

In regards to the recent hubbub on volts/amps displays for the power 
supplies - I've been checking out various options myself...still 
don't know if I'm going to use a VU type led bargraph, converted for 
DC volts and amps - or a digital display (LED not LCD).

These are a fairly cheap option:

http://www.abra-electronics.com/catalog/kits/p445.html

scroll down 2-3 kits...

This is only the site I've found tonite but there are a zillion 
little 'kit' sites with volt/amp meters of the digital variety out 
there. Some a bit cheaper.

While the 7-segment LEDS they come with are too big for me, with 
alittle searching you can find smaller ones to retrofit, etc...they 
come in all colors...purple?  yeah cool...

The ones below are quite cool, but expensive (sorry in advance to 
the 'blue' LED haters but these display, as you can see, are NOT that 
blast beam of blue from the clear LEDs (don't know if I like them 
myself yet either.)
but these 3-1/2 digit display are only 1.3in. across (really small)

http://store.datel.com/cgi-
bin/datel.storefront/3ea4acad021f3542271d0c9f89420682/UserTemplate/1?
BodyContent=newdpm

You could get one for voltage and have a selector switch, switch 
between the rails...

I may be doing the bargraph type or even a three LED 
hivolt/correctvolt/low volt indicator with a rather simple comparator 
circuit.  many possibilities here - just to throw some out...

just my 2 cents - hope it may help someone.

I hope Paul isn't cringing too much with all this LED talk as of late-
laughs.  With the recent announcement of more kits getting shipped 
soon, we need to be real nice for our summer Christmas gifts!!

Rog


http://store.datel.com/cgi-
bin/datel.storefront/3ea4acad021f3542271d0c9f89420682/UserTemplate/1?
BodyContent=newdpm