Jump to content
Electronics-Lab.com Community

LegendBreath

Members
  • Posts

    79
  • Joined

  • Last visited

    Never

Posts posted by LegendBreath

  1. Hi,
    I got some chip that is marked -VDC and a +VDC... of course, but how do i do that -VDC do I only  use the ground of my power supply, like my power supply is build up that way >transformer>bridge>capacitor and on that capacitor I got a + and a -, well, do I plug those two wires on the chip?

    Sorry for my "noobish" stage but we all went in that stage one day ^_^

  2. Geez, I got an amplifier (well 2 of them) and each time someone in the house open the TV or the light, my speakers does a *PACK* in them... the amps are from some Altec Lansing ACS90 speakers... I took the board off and modified it a little bit, but it was doing that before i modified it.

    Someone knows why???


  3. Don't know what you mean 10 & 13 is output not ground.


    Errmmm... you know, in audio you always have 3 (4) wires (when its stereo) well the third one, is it the GND?

    BTW: Is 42VDC is enough for this chip...
    Another BTW: The 2 channels INPUT, what happens if I put the - on the + and the + on the -? (In other words, if I inverse them...)
    Another BTW2: Yeah, does someone wants to explain or have somekind of tutorial on the Compensation thing...? I know one meaning of that word, something that is given for a loss or damage...
    Another BTW3: What is the muting and how does it works?

  4. Pinout STK4171

    Pin 1: Left channel input (-)
    Pin 2: Left channel input (+)
    Pin 3: Compensation
    Pin 4: Compensation
    Pin 5: Compensation
    Pin 6: Muting
    Pin 7: Compensation
    Pin 8: Compensation
    Pin 9: -Vcc
    Pin 10: Left channel Output
    Pin 11: +Vcc
    Pin 12: Bypass
    Pin 13: Right channel output
    Pin 14: -Vcc
    Pin 15: Compensation
    Pin 16: Gnd
    Pin 17: Right channel input (+)
    Pin 18: Right channel input (-)



    Eh eh thanks alot! But, what is compensation... and for the second output of the channels, it's the ground right? And... why is there two -Vcc

  5. Hi LegendBreath,
    Turn off the TV next time you record. I hear lotsa stuff going-on on your recording.
    I can identify the sounds from most things, but I wonder where the flute playing comes from.

    Audio equipment needs shielded audio cables to avoid interference like you have, and the transformer might also need a shield.
    Instead of running the wires from a wall to the phone, try connecting the capacitors to the red and green wires in the phone's jack. A phone line is about 52VDC when not in use so use capacitors rated for at least 63V. ;D


    Lol the TV and flute... probably from the girl I was speaking with :P
    I'll try alone to see what it does...

    And what the... me, swearing in background???

    Thanks alot :D

  6. Hi LegendBreath,
    You project isn't crappy, but your transformer might be.
    What is the voltage at the input to the regulator without a load?

    If you have three 47 ohm/1W resistors, connect them in parallel across the output of the regulator as a load, then measure the input and output DC voltage of the regulator. Don't leave them connected too long or they will get hot and the transformer might get hot too.


    Ok thanks audioguru,
    I'll try to find some 47 ohm resistors. And, without the load it is 7VAC and 12VAC.
×
  • Create New...