DC Volt meter

zaky · Mar 18, 2007

I build a dc power supply adjustable 0 to 9 volt dc,I want to be able to read the voltage that I dial in with digital dual digit 7 segment display, and I dont know what IC chip to buy that have the folloing internal components:Analog to digital converter,comparator,clock,decoder and 7 segment display driver.
Also what out side components would I need if any?
Please help,
Thanks
zaky

jemch72 · Mar 18, 2007

**broken link removed**

Sceadwian · Mar 18, 2007

You can buy a cheap multi-meter for that price or less. Seems way too pricey for a simple voltage display.

Gayan Soyza · Mar 19, 2007

Hi zaky sceadwins point is better for you same I do for small circuit measurements.
Can build with a MCU but its getting more complicated for you.

The price of a small size (cheapy) three & half digit is about 3 US$ in my place…

If you really need to build in your own try this it works great. It’s an ADC converter.

**broken link removed**

original link is here
https://www.electronics-lab.com/projects/test/014/index.html

chemelec · Mar 19, 2007

Gayan Soyza said:
Hi zaky sceadwins point is better for you same I do for small circuit measurements.
Can build with a MCU but its getting more complicated for you.

The price of a small size (cheapy) three & half digit is about 3 US$ in my place…

If you really need to build in your own try this it works great. It’s an ADC converter.

**broken link removed**

original link is here
https://www.electronics-lab.com/projects/test/014/index.html

Probably Cheaper and Easier to just Buy an Already Built LCD Panal Meter.
Not sure Where you live, but in Canada, they are only about $15 to $20 for a 3 1/2 Digit one.

power453 · Mar 21, 2007

Check out ebay there is lot's of them real cheap complete with many diffenent choices of colors and digits to choose from.

Leftyretro · Mar 21, 2007

power453 said:
Check out ebay there is lot's of them real cheap complete with many diffenent choices of colors and digits to choose from.

Here is one I bought recently, works good.

**broken link removed**

Lefty

power453 · Mar 22, 2007

Here is one I bought about a month ago.

**broken link removed**

DC Volt meter

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