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Kikusui CO 5060 oscilloscope preamp attenuator.

Discussion in 'Electronic Design' started by [email protected], Dec 17, 2005.

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  1. Guest

    In order to look at 12v-120v dc-ac inverter waveforms, (recent post), I
    bought the above dual beam 'scope over EBay and find the only problem
    seems to be a bad CH1 attenuator (trace vertical position "all over the
    map" if rotary switch touched). Anyone with experience of this 'scope?
  2. Hi Dick,

    I have a '5040 which served me well over the past 15 years.

    It should be too difficult to repair that. I think its only a loose
    connector or a bad contact on the rotary switch.

    Good luck,
  3. Guest

    Thanks for the encouragement Wolfgang, It looks pretty tight in there
    as though I would have to pull the preamp circuit board out for access.
    I only paid $20.50 USD+ shipping for the 'scope so am reluctant to send
    it to Kikusui in Portland for repair. I used CH2 to display and capture
    the output waveforms of three different dc-ac "modified sine wave"
    inverters using a digital camera. Interestingly they were quite
    different one from the other two though they had very similar rms
    values of ~121v. I constructed piecewise linear descriptions of these
    waves to check my LPF using 5Spice. I am trying to get a 19.2v drill
    battery charger to run off one of the inverters.
    Regards, Dick
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