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  1. (*steve*)

    555 timers

    Where they are most cheaply and reliably found is an electronic component retailer. And its not impolite of us to tell you to google for the information. We are not your slaves. We told you how to find the images. As for 555s being used in joysticks, its not something I've come across. They...
  2. (*steve*)

    Nice relaxing day.

    No, I'm referring to the Trumpocalypse.
  3. (*steve*)

    Nice relaxing day.

    I love days like this when nothing is going on and I can just relax and not have to worry about anything.
  4. (*steve*)

    555 timers

    That about the old metal can variant?
  5. (*steve*)

    Group Project

    Yes, I have met a couple of people. We are always collaborating with others. People come here with problems and we work with them to try to resolve the problems.
  6. (*steve*)

    Does a 250w Infra red light will work on a 320w 8.92A 38v solar panel ?

    Oh, light, not a bar heater. You can't rewire that!
  7. (*steve*)

    Does a 250w Infra red light will work on a 320w 8.92A 38v solar panel ?

    If you step your DC up to 110V, assuming it's just a heating element, it will work fine. If it has three identical heating elements in series, you could rewire them as parallel and run then directly from your 38V. (assuming it is actually 38V under load.
  8. (*steve*)

    Help repairing several Reconyx trail cameras

    On the other hand, spray is cheap. If it helps, you've achieved something. If not, no great loss. If these boards do actually have batteries on board, care must be taken when cleaning the boards. Preferably you remove them first. If there's no batteries, I would first immerse the board in a...
  9. (*steve*)

    Why is this LED not 20 Watts?

    A lot depends on the construction of the LED. An individual element inside one of these compound devices, when operated properly will have about 3.5V to 4V across it (this is a very rough estimate). If these are arranged in multiple strings of 3, the LED is nominally a 12V device, if in...
  10. (*steve*)

    How do you connect all the voltages together into one?

    Yeah, it reads to me like: I have 9 stairs. I can climb 5 or 6 or 3, or all 9. How do I add them together to get a flight of 23 stairs? With inductors you can do something akin to running so fast up the 9 stairs that when you get to the top your momentum takes you up several more stairs that...
  11. (*steve*)

    Diode across Peltier to prevent reverse function

    A diode will only allow current to flow one way. Places with the anode toward the +ve side of your power supply, it will allow power to flow from the power supply to the Peltier, but not flow in the reverse direction
  12. (*steve*)

    Why is this LED not 20 Watts?

    I suggest that the driver may be a 10W driver relabelled as 20W. It seems to be delivering 300 mA which I'd what one might expect. Also Al, your understanding is a little poor in some respects. A 10W LED could be 12V 600mA or 24V 300mA. The actual voltage and current depend on the way the...
  13. (*steve*)

    Help with Li-po

    One of the most important features you need is automatic shutdown when the cell goes flat. Without that, you'll kill the battery. You also need to consider your desired charge time and whether you want the device to operate while being charged.
  14. (*steve*)

    Diode across Peltier to prevent reverse function

    Yes, this calls for a series diode
  15. (*steve*)

    Why is this LED not 20 Watts?

    Doesn't work from my phone. Brings up something else entirely?!?!?
  16. (*steve*)

    Why is this LED not 20 Watts?

    Because I want to check an alternative explanation. Perhaps its really a 300mA source. Perhaps the LED has a Vf above the max voltage for this driver and it is incapable of supplying 600mA at this voltage. Although I assume I know the cause, the current reading will confirm it, and if it is...
  17. (*steve*)

    Why is this LED not 20 Watts?

    Start by reading every one of my posts in tho thread (except one) where I implore him to measure the voltage across the LED (and the current through it) when connected to this driver.
  18. (*steve*)

    Why is this LED not 20 Watts?

    We've only mentioned it three or so times.
  19. (*steve*)

    Why is this LED not 20 Watts?

    Please measure the voltage across the LED while it is operating and the current through it (placing the meter in series with the LED). With this information we will most likely be able to identify WHY this is happening and possibly suggest a course of action. If you can post links to the...
  20. (*steve*)

    Static Detector

    Hmmm... I've seen schmitt trigger inverters used in circuits like this. They have a much lower gate charge, and the inputs are slightly better protected. That gate capacitance is the reason the LED stays turned on. The switch should discharge it nicely, but beware that if the gate voltage...
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