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Amplify signal from 20V to 220V

Discussion in 'Electronic Design' started by Efthimios, Jan 14, 2008.

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  1. Efthimios

    Efthimios Guest

    I have a low power signal generator, generating 20V peak to peak
    signal. I want to amplify the signal to 220V in order to pass 1 Amp
    from a coil.

    Using a transformer ONLY is not a solution. Although I have increased
    the voltage to 170 Volts Peak to Peak I can pass only a few mili amps
    threw the coil. This was expected.

    Does any of you know how to amplify my signal from the generator to
    220 V and to be able to pass a current of about 1 amp?

    Are there any power amplifiers that can do this job?

    Efthimios
     
  2. - What is the frequency range?

    - Are you saying you got the 170V with the coil connected? If so you
    won't get much increase with 220V.
     
  3. John Fields

    John Fields Guest

     
  4. John Larkin

    John Larkin Guest

    Just get an old stereo amp or receiver and drive a step-up
    transformer. We use a 400 watt/channel Peavey to simulate AC power
    systems. One channel steps up to as high as 480 RMS to simulate a
    power line voltage, and the other steps down to 200 amps RMS to drive
    a current transformer.

    John
     
  5. JeffM

    JeffM Guest

    If this is for a production environment,
    there is an entire arm of the industry that has pre-built solutions.
    http://www.google.com/search?q=AC.Power.Source&num=100
    These are readily available on the used equipment market.
    http://www.google.com/search?q=Paci...stek+Powertron+California.Instruments&num=100
     
  6. default

    default Guest

    What frequency? What is the resistance and reactance of the coil?

    Those things determine what voltage it will take to get one amp
    through the coil.

    If you know you need 220 volts (is that RMS or P-P?) at one amp -
    then you need an amplifier with that output at whatever frequency you
    will use.

    An audio power amp with a transformer output may be the most cost
    effective way to do it - you're talking about 220 watts - signal
    generator outputs are usually on the order of 1 volt or 10 volts into
    600 ohms for audio work - or a few milliwatts.
    --
     
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