Wu meter

Discussion in 'The Projects Forum' started by 6ths3ns3, Feb 13, 2011.

  1. 6ths3ns3

    Thread Starter New Member

    Feb 13, 2011
    3
    0
    i have this wu meter and i don't know what to do with it
    i want to use this in my audio amplifier ...some kind of balance or something else, but i don't know a schematic.
    the cursor of the wu meter must move in the both directions (+ and -)
    please help me :confused:
    thanks
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,647
    2,346
    Hello,

    The meter probably comes from an old FM radio.
    These old radios did not have a good frequency lock in (AFC) and you used the meter to see if the tuning was OK.

    Bertus
     
  3. 6ths3ns3

    Thread Starter New Member

    Feb 13, 2011
    3
    0
    yes it is from an old radio
    but a schematic for it, please
     
  4. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    It's not a VU meter - http://en.wikipedia.org/wiki/VU_meter

    What you have is a center zero meter. It may be a sensitive ammeter that indicates direction and magnitude of current. You might be able to check it if you have an adjustable power supply and some accurate resistors. The maximum deflection may be indicating on the order of +/- 50 microamps.
     
  5. 6ths3ns3

    Thread Starter New Member

    Feb 13, 2011
    3
    0
    ok so in my amplifier i can't use it?
    some kind of balance schematic
     
  6. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
  7. wayneh

    Expert

    Sep 9, 2010
    12,100
    3,036
    Well, you COULD use it, but for what? I don't have any dials on the front of my amp and I don't feel like I'm missing anything. You could perhaps - with a lot of difficulty - work out a way to have the dial correspond to the setting of your volume knob. But why?
     
Loading...