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Recent content by Sam_123

  1. S

    TL783 ..need advice

    Thanks a lot. You guys are very helpful.
  2. S

    TL783 ..need advice

    I like your idea of using resistor and a zener diode. Ok, so then I can use a 4700 ohm 3W resistor and a zener diode. what zener diode should I get? I guess if we connect a diode and resistor in series with a DC voltage source then the voltage drop will be constant. correct?. Thanks
  3. S

    TL783 ..need advice

    Oh my bad it is 130 V DC. The current draw is stable. Per my understanding I can use resistors to drop the voltage from AC to DC but for DC to DC, resistors won't work (May be I am wrong). power source is a 130 V DC power unit.
  4. S

    TL783 ..need advice

    I think there are some DC power supplies but they are very expensive. I don't see any other options other then using TL783 :( Do you have any experience with TL783? Should I use it or should I find some other alternative? Thanks,
  5. S

    TL783 ..need advice

    No there is no reason for me doing it by myself. I tried searching online to find a better and safer way to do this but TL783 was the only method I came across. I would love to use something off shelf. The adapter from walmart is AC to DC but I need DC to DC. (Input=130V DC and Output=12V DC)...
  6. S

    TL783 ..need advice

    Hi all, I need to convert 230V DC to 12V DC (very large Voltage drop) so is it a good idea to use TL783? The load current is 22 m A. Will I need input and output capacitors? Thanks
  7. S

    Electrical Wiring

    Thanks Steve for getting back to me. The way this circuit should work is: controller sends a signal to turn this lamp ON and after few seconds the lamp gets a OFF signal. The way it is working now is when the controller sends a signal the lamp turns ON (V=27V DC) and after it gets a OFF...
  8. S

    Electrical Wiring

    Hi All, I have a 27V DC going to a light indicator and somehow there is a leakage....when the controller sends a signal the light indicator comes ON which is great but when I measured the voltage when the indicator was off, it gives me a value of 12 volt which should be 0V... The current is...
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