ICL7107 with MAN6740

Discussion in 'The Projects Forum' started by toughspeaker, Jun 10, 2009.

  1. toughspeaker

    Thread Starter Active Member

    Jan 28, 2009
    40
    0
    Hi guys, Last week, I started building this voltmeter circuit:

    http://electronics-diy.com/ICL7107_volt_meter.php

    Today, i found out that the circuit is made for a MAN6910. My problem is that i accidently bought MAN6740. In short, cathode is anode and vice versa, thats the only difference between the two MAN's. I know, this is perhaps too much asked but ive now spent 2-3 hours and cannot come up with the correct circuit modified to accomodate the MAN6740. I would appriciate it extremely if someone could help me. Or is it impossible?
     
  2. nanovate

    Distinguished Member

    May 7, 2007
    665
    1
    You can uses PNP transistors on the ICL7107 and MAN6740
     
  3. toughspeaker

    Thread Starter Active Member

    Jan 28, 2009
    40
    0
    How would that be possible? Where would i have to implement them in the circuit, how many and of what type?

    Thanks in advance
     
  4. Pich

    Active Member

    Mar 11, 2008
    119
    4
    Each segment would require one transistor, 23 in all. May be better to buy the proper LEDs
     
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