Circuit
I am interested in building one, but the IC's are not in production and I could not find a replacement. So can someone recommend a replacement or a different circuit?

 

Someone is selling them on ebay for a ridiculous price, 24$ per IC. You may be able to bargain with him a bit, maybe 2 for 1 or something?

http://cgi.ebay.com/CA3161-Integrat...ZWD1VQQ_trksidZp1638.m118.l1247QQcmdZViewItem

Steve

 

findchips is your friend

For the BCD to 7 segment driver see if the HEF4511BPN will
work. It is in stock at Digikey. According to findchips The
A/D (CA3162E) is in stock at Jameco

(* jcl *)

My hints are at ---

http://www.luciani.org/getting-it-done/getting-it-done-index.html

 

I hate when they sell chips for those kinds of prices. Now only if I could buy some cheap today and resell them 1000x more then original.

Thanks John! I have bookmarked Findchip.
Only Maxim makes these parts and they cost a few dollars each but I will see if they can send me a sample.

 

hello my name is eduard I am from santo domingo
I am writing because dont get , there arent (CA3162E) in this contry please tell my how I ccan get thanks my email is manuelestrella007@hotmail.com if you want help my

 

For the effort involved, the circuit ain't so impressive. This is 35 year out-of-date technology. Any digital panel meter, like a $32.00 MuRata DMS-20LCD-0-5-C will outperform the voltmeter part. That's Mouser part #580-DMS-30DR-0-R-C.

The ammeter part can be kludged with the same meter and a sensing resistor, or you can get a DC panel ammeter for $50.00. That is Mouser part # 580-D520PC-6-DC4GS-C.

And, since you have to multiply the two readings to get power, you could think about a moderately good DVM.