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  1. crutschow

    What's 'fast enough'?

    If the connection is fast enough for streaming video, than I can think of nothing that would require a higher bandwidth, unless perhaps 4k streaming if you ever want that. So I see no reason to change otherwise, especially if the cost is higher.
  2. crutschow

    H bridge circuit simulation in LTSpice

    The word "neutral" is normally only used to designate the non-hot terminal in electrical wiring. LTspice requires at least one ground connection, which can be any arbitrary point in the circuit, to which all voltages are referenced.
  3. crutschow

    Recreating kit sold in the 60s, alt 12vdc to 3 120vac outlets

    That may work, but the output is a high frequency AC (a few hundred Hz to a few kHz depending upon alternator speed and the number of poles it has), not 50-60Hz. That may or may not be a problem depending upon what you are trying to power.
  4. crutschow

    buggy board, bad tech and strange readout... heh heh

    The circuit signal ground is usually tied to the power supply ground. I have no idea what you mean by using the "signal feedsback" (whatever that is) as a reference.
  5. crutschow

    Not working 12v dc to 220v Ac

    Sounds like there is a wiring error or something is shorted.
  6. crutschow

    Not working 12v dc to 220v Ac

    But are they all connected to the correct terminals? That could be a problem with a 12V transformer. That's why I suggested the test with a lower voltage.
  7. crutschow

    Not working 12v dc to 220v Ac

    Did you double-check all the connections, particularly those to the transformer?
  8. crutschow

    Not working 12v dc to 220v Ac

    Of course. But I don't think the high dissipation he is seeing is due to slow MOSFET gate rise and fall times @ 50Hz.
  9. crutschow

    Not working 12v dc to 220v Ac

    That resistance only effects the gate signal rise and fall times, it has no effect on the final gate voltage.
  10. crutschow

    Not working 12v dc to 220v Ac

    So you don't have a 10Vdc supply you can test with? Double-check all your wiring including the transformer.
  11. crutschow

    Not working 12v dc to 220v Ac

    The transformer magnetizing current is proportional to the average value of it's input waveform, not the RMS. This means a 12.6V square-wave (from a lead-acid battery) causes about a 16% higher transformer magnetizing current than a 12Vrms sinewave voltage, which may be saturating the...
  12. crutschow

    ADC Values

    There are a number of IC temperature sensors that have a quite linear output versus temperature.
  13. crutschow

    555 LED Circuit not playing nicely

    Look on the Internet at schematics of circuits. Most of those are properly drawn.
  14. crutschow

    Back Emf applied to same load?

    Can't. really understand what you want from your description, so please draw a schematic of what you have.
  15. crutschow

    Analog signal amplifier with OpAmp, Transistor or Darlington Pair?

    Ah, I see I confused my little self. :oops:
  16. crutschow

    555 LED Circuit not playing nicely

    Your schematic is very hard to follow with horizontal components and long wires with jogs. Please draw it with vertical components and short wires with minimum jogs.
  17. crutschow

    Analog signal amplifier with OpAmp, Transistor or Darlington Pair?

    I posted this previously, but it seems to have disappeared. It uses an op amp with a non-inverting gain of 1.5 and a negative offset of 0.75 volts to get the desired output. The op amp can be just about any rail-to-rail type.
  18. crutschow

    Wien bridge oscillator help...

    sure. But since I can't download those files to this forum how can I PM them to you?
  19. crutschow

    Wien bridge oscillator help...

    Are you measuring the resistance of the pot setting?
  20. crutschow

    Wien bridge oscillator help...

    Post a schematic of your circuit.
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