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  1. (*steve*)

    Power Supply Help

    OK, I missed the link to the specs.
  2. (*steve*)

    How to draw this?

    Plotting the point gives you the real part along the X axis and the imaginary part along the Y axis.
  3. (*steve*)

    How to draw this?

    so, do you want the real and imaginary parts of this resistance, or do you want to plot I on a graph? and is this homework?
  4. (*steve*)

    Transformer power on both sides

    Typically domestic customers are billed for real power and large commercial customers for apparent power.
  5. (*steve*)

    Power Supply Help

    is it as simple as a power supply designed for 110V being powered from 220V? what is your mains voltage?
  6. (*steve*)

    Transformer power on both sides

    if you're talking about a meter used for billing electricity use, they measure power, not current.
  7. (*steve*)

    How to draw this?

    what triangle do you mean?
  8. (*steve*)

    Need help with amplifying a light

    that's the sort of thing you can use, however for driving a LED you need a constant current source. take a look in the resource about LEDs. It has a simple driver using a mosfet that should be able to be driven from a voltage divider using an LDR as you have shown in your circuit.
  9. (*steve*)

    What is this

    Also photos which allow us to read all the stuff on the rear panel (and anywhere else there is text)
  10. (*steve*)

    LED strip power supply

    "should"? possibly useful if the OP didn't already have the strips.
  11. (*steve*)

    Need help with amplifying a light

    what is the voltage required by, and the power of the light you want to turn on? What sources of power do you have (e.g. A 5v plugpack)? What experience do you have with mains wiring (if the light requires mains voltages)
  12. (*steve*)

    555 PWM 0%?

    That's great. Why don't you post a schematic of your new circuit? People want to do this all the time and if they come across tho thread you'll be helping them.
  13. (*steve*)

    Need help with amplifying a light

    perhaps the easiest way is to put the working unit in a dark box with an LDR. The LDR will "see" the flashing light and can be used to control a larger bulb (perhaps via a transistor and a solid state relay).
  14. (*steve*)

    an interesting electronic problem about my headset

    That is pretty much what i suggested as a possibility.
  15. (*steve*)

    an interesting electronic problem about my headset

    One possible explanation is that the plug I'd only making connection with one channel, pushing harder allows it to make contact with the other channel. if the video only has the channel that normally does not make contact then you might see this behaviour. without pressing the plug, do joy get...
  16. (*steve*)

    Lithium ion polymer batteries

    What is the use of homework if you get other people to do it?
  17. (*steve*)

    555 PWM 0%?

    one of the problems is that 1% duty cycle does not "look" 1/100th of the intensity. Thus going from 1% to zero in a single step seems abrupt. if you were to rely on your 555 to generate a sawtooth (this is what is across the capacitor) and then use a comparator to compare this with a voltage...
  18. (*steve*)

    Power for 200 flashes

    that is exactly what you should expect. just fit the batteries to the units to power the electronics. hopefully, connecting the high voltage supply disconnects the inverter reducing the battery drain to almost nothing.
  19. (*steve*)

    Voltage Doubler problem

    instead of a resistor, use a light bulb. When the light goes off the capacitors are charged. I would recommend you use an isolating transformer so your circuit changes from scarily lethal to plain old lethal. scary lethal means you can be killed by coming into contact with any part of the...
  20. (*steve*)

    How to draw this?

    0 degrees (0 radians) is a direction from the origin going in a positive direction on the X axis. 90 degrees (pi/2 radians) is a direction from the origin going in a positive direction on the Y axis. 180 degrees (pi radians) is in a direction from the origin going in a negative direction along...
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