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  1. L

    More than one power supply from one power supply with caps

    If u can supply 10 volts, 1 ohm at 100 milliamps, then u know what im talking about.
  2. L

    More than one power supply from one power supply with caps

    It isnt rubbish, what do u think PWM is?
  3. L

    amping with a step down transformer

    Whats wrong with what I said?
  4. L

    amping with a step down transformer

    Has anyone ever got something to be louder with a step down transformer. I imagine if u start with fairly high volts, and go into a small load, it can actually make it louder?
  5. L

    More than one power supply from one power supply with caps

    Its not complete rubbish, it actually lets you designate amps at any resistance!
  6. L

    More than one power supply from one power supply with caps

    Note I had a problem with the circuit, it did short back through the diodes, but if u use the negative cycle to block the diodes on the off period it fixes it, stops the short.
  7. L

    More than one power supply from one power supply with caps

    https://www.falstad.com/circuit/circuitjs.html?ctz=CQAgjCAMB0l3BWc0DscBMkDMBOHAWOAydEBADjLMjIFMBaMMAKADcR8tSnT99KeUELzhUa42FmYB3Dv3Bhe5GoMgyOyhUpXpKa2VnL4tILAm6Ko6sxdI3wuq7PSFhCAGzDXuvcwDGXjQ+wiikwRLwcBD0MOgEOFh8+GDuyvgo5DhOIWHklOihbp76gcJ5wi5lvgBOFcbBmPnlNAhw6g3lBbm+ssmegpy2VrWD4O40fAJ8QjCQCMwjo...
  8. L

    constant current source with transistor

    Spice lies alright, confuses the absolute shit out of me, I need to get some more real components and do some real testing as well.
  9. L

    constant current source with transistor

    So I was just stuffing around in falstad again, and what always pissed me off is the capacitors seem to do nothing, all u see is the battery behind the capacitor, u can even delete the capacitor and it doesnt make a difference to the circuit. So, what I've found just today, is I can get the...
  10. L

    constant current source with transistor

    I had a look at the circuits. What I would like to see is someone do it without a transistor. I mean base of the transistor, for base. the + and - are the power entries, med res is the "median resistor" which judges the short away strength. The cool thing about the circuit is it acts as a...
  11. L

    constant current source with transistor

    So I take it you dont like the circuit.
  12. L

    constant current source with transistor

    So I just drew up another circuit, do u guys think this would work? Its two power supplies, one for the base of the transistor, and one for the collector, and it shorts away from the load to activate the base. Its resistance actuated, not voltage.
  13. L

    how many watt resistor do i need for 2 volts 1 ohm

    Oh yeh I get it now... thankyou...
  14. L

    how many watt resistor do i need for 2 volts 1 ohm

    How big a resistor is it to handle 2 volts at 1 ohm??
  15. L

    I need help with a circuit

    It looks like possibly you want a fair bit of power here? So you would external power it, not use the arduino power, and just run the transistors with the arduino out, then itll work for sure.
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    How to make an opamp out of transistors?

    How many transistors it has doesn't mean how good it is.
  17. L

    Uneducated question

    I need a picture, I dont know what u mean, op-amp schems I just looked at dont have circles around the op-amp.
  18. L

    How to make an opamp out of transistors?

    transistors can be put together to make schmitt triggers, and opamps. Just like how Harold said.
  19. L

    How to make an opamp out of transistors?

    oh so you've already done it before. Yes, dont need opamps if you have a transistor and a few resistors. And a schmitt trigger, if u have the transistor, already makes both the more high level constructs.
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    How to make an opamp out of transistors?

    So, an op-amp will convert a sine wave into a square wave. But if u don't have an op-amp, you can build an op-amp out of transistors instead. Would someone like to draw this little circuit out for me? It would be fun for me to see someone to show me their version of it. Here is radiofun...
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