Simple solution for reading a voltage

[guysk]

Hi,

I am looking for a simple solution to read a voltage (0-5V or 0-10V or so) and display it on seven segment LED's. I know that there used to be off the shelf chips that did similar functions (Intersil?) but I cannot seem to locate anything now. I know that I can simply use a PIC with A/D if need be, but, I am looking for the quickest and simplest solution.

Thanks in advance

 

[Kripton2035]

the intersil chips are now at maxim's web site

the icl 7106,7106 and so on are still available as sample...
there are also some of these chips at texas instrument.

 

[jimbies]

Hi,

The quickest solution is to use the Intersil chip pair
CA3162 & CA3161 pair. Please see attached pdf for
details.

 

[Borber]

panel meter

I believe it's cheaper to by 3.5 digit LCD panel meter than to build one. Prices at Conrad are low enough.

 

[wolf69]

I have built a multimeter by harry's chips, they read voltages and drives 7 segments lcd display... dont' remember part number..

Bye!

 

[wolf69]

sorry, harris is intersil now.... bye!

 

[JoseArgentino]

Volt meter IC

Another alternative is construct a module with a low cost microntroller (16f84) and a measure interface. Regards.

 

[FANT]

Usually I have the same problem when I build some test benches for the machinery.
The cheapest solution is to buy a digital voltmeter , disassembly the protective box and install it on the front panel.
So you have a already ready input attenuator and different measurement as needed ( voltmeter, ammeter, ecc )
If you need galvanic separation a 1W DC-DC converter is enough cheap ( credits to a greek friend of mine, S. Liodakis for the original idea ).
The cost of a digital voltmeter is actually about 10 Euro.

Mandi