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  1. Kochcha

    Service Manual

    Hi, I am looking for service manual of Power Amplifier Model PA100B-100Watts.The OEM is Thales Communication (UK).Can anyone know where i can find or purchase them..Thanks in advance. Regards Kochcha
  2. Kochcha

    Switching Mode PSU

    Yes,i did replace all the caps with standard ones.How do you differentiate ESR cap from the standard ones?....... What frequency is your ripple? 50Hz What frequency is your switcher supposed to be using? 50Hz What is the current your load is ACTUALLY drawing as measured with a TRUE RMS...
  3. Kochcha

    Educational Materials

    Thanks Reidh for your effort. Rgds Kochcha
  4. Kochcha

    Educational Materials

    Hi, A few years ago, i came across some very helpful educational material posted by the USA Navy entitle "NonResident Training Course"...Are they still available.,if so how do i access them.I am interested in Electronic Components testing and Electronic Communications.Thanks.
  5. Kochcha

    Switching Mode PSU

    Hi Keith, It is 2volts peak to peak (Spikes)...I used a oscillscope to measure. Rgds Kochcha
  6. Kochcha

    Switching Mode PSU

    Hi, I am trouble shooting on a switching mode psu.The fault is high ripples when connected to a load.It is providing 13.5Vdc/5A output...I have change all the capacitors on the unit and still the ripples are high about 2volts p-p riding on the dc line...Any suggestion

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