mallory g1501 12V vibrator

Discussion in 'General Electronics Chat' started by Roy Peter Cook, Apr 15, 2012.

  1. Roy Peter Cook

    Thread Starter New Member

    Aug 26, 2010
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    I purchased two olson side-bander amateur radios to use the chassis and possibly the power transformer. the unit uses tubes. Is the transformer HV or does it generate th B+ with the use of the vibrator. I do not understand why it uses the vibrator. It does not look like a portable unit. Roy
     
  2. mlog

    Member

    Feb 11, 2012
    276
    36
    The mechanical vibrator uses low voltage DC, such as 6 or 12 volts, to generate a high voltage AC signal through a transformer. The AC on the secondary side gets full-wave rectified for the B+ supply, which is the plate voltage for the tubes.
     
  3. Roy Peter Cook

    Thread Starter New Member

    Aug 26, 2010
    2
    0
    so the transformer is not HV?
     
  4. #12

    Expert

    Nov 30, 2010
    16,248
    6,745
    The transformer changes the chopped 6 or 12 volts into a high voltage which is called B+.
     
  5. mlog

    Member

    Feb 11, 2012
    276
    36
    Exactly, except it's not called B+ until after it's rectified.
     
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