Recent content by JonathanFilippi

  1. JonathanFilippi

    Automotive 12V to +-20V converter

  2. JonathanFilippi

    Automotive 12V to +-20V converter

    Costructive criticism is the key for technological improvement and learning  :)
  3. JonathanFilippi

    Automotive 12V to +-20V converter

    I'm not discouraged  ;), answering questions and solving doubts is funny, also Audioguru started an interesting discussion. The power supply is easily scalable up. With those heatsinks the mosfets should hold up to 300W (but with fan), the important thing is the transformer core, that must be...
  4. JonathanFilippi

    Automotive 12V to +-20V converter

    Of course it can be designed very easily to output +/- 30VDC per rail. This can be accomplished varying two things. First the turn ratio (instead of 1:2 using 1:3) and downregulating to 30V via PWM (adjusting the voltage divired feeding the error amplifier accordingly). If you want to change the...
  5. JonathanFilippi

    Automotive 12V to +-20V converter

    Thanx for the advice. I will use the caps on the amplifier input (1000uf+100nF for each rail near the amplifier). Anyway even it is noisy because of ripple, the noise is in the ultrasound range (areound 50KHz), so it will not be heard
  6. JonathanFilippi

    Automotive 12V to +-20V converter

    You are right, but only at half. I'm claiming 50W output power on
  7. JonathanFilippi

    "Power?" Inverter

    This circuit itself is a crap... Better is to use a 555 with duty cycle to 50% and 50Hz frequency, Two mosfets with respective gate driver and a half tapped transformer with the rating needed to get the power required.
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