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  1. (*steve*)

    Somebody is using my email address

    That is disturbing for a number of reasons, no least being that I have some resemblance to the person in the image...
  2. (*steve*)

    Smoke from console power port...

    You get sparks (probably) because there is a capacitor in there which needs to be charged and is a very low impedance when discharged. Smoke is baaaad. It may be from many causes. I would open the unit up and take a look (and a sniff if necessary).
  3. (*steve*)

    Somebody is using my email address

    Hi. I'm not sure about the email verification, but I do remember the three posts made earlier from this account and I don't recall they seemed suspicious at the time. I imagine that it's possible this person entered an incorrect email address (perhaps theirs is 1 letter different?). However...
  4. (*steve*)

    Capacitor tester in circuit

    And perhaps, if I am right about this circuit, since you have measured a 10,000μF capacitor with a capacitance meter and this circuit (on the 10V range?), you could repeat it showing how each meter responds with various values of parallel resistance. Your recent posting of the "test" waveform...
  5. (*steve*)

    Capacitor tester in circuit

    Hi @caps you seem to be putting a lot of effort into this, but some of us are scratching our heads a little. What I think you're doing is taking an old Soviet(?) design, and posting it here with an English translation. Here are some things you might consider to make your thread more useful...
  6. (*steve*)

    calculate high power led resistor

    You cannulate then the same way you do for any led. No, I would not recommend using resistors with high power LEDs in most cases. For more information, see our resource on LEDs
  7. (*steve*)

    Trying to identify something that resembles a transformer!

    It is also possible that part of the winding is made with different gauge wire than another part I have a 4.5kVA autotransformer designed for 240 to various lower voltages like 220V, 230V etc. that is wound in this manner.
  8. (*steve*)

    What exactly is the difference between these two omron relays?

    Total nonsense
  9. (*steve*)

    What exactly is the difference between these two omron relays?

    That seems reasonable.
  10. (*steve*)

    What exactly is the difference between these two omron relays?

    I would recommend that if you have a pcb that you spray it with some sort of conformal coating on both sides. Dust and moisture can create conductive paths. Even spraying it with a clear acrylic may be sufficient.
  11. (*steve*)

    What exactly is the difference between these two omron relays?

    Your left. Pick one at random. As has been suggested, pick the cheapest. Unless you know of a reason to choose another one, or you have been advised that your application needs something special, then there's really nothing else to go on. If you're building a lot or if it is really...
  12. (*steve*)

    What exactly is the difference between these two omron relays?

    Use the one on the left, unless there's a reason to use the other one.
  13. (*steve*)

    Hello from Vancouver Canada

    Welcome to Electronics Point! We like learning too. What has brought you here?
  14. (*steve*)

    HOW DO I SHIELD MYSELF FROM A NEIGHBOURS SMART METER?

    Yeah, we're all aware of that. The problem is that it's all snake oil, not based on science. It's a lot like anti-vax, homeopathy, and other assorted woo. I hope you're not already convinced by this rubbish, because people who are tend to double down when shown actual evidence (as opposed to...
  15. (*steve*)

    HOW DO I SHIELD MYSELF FROM A NEIGHBOURS SMART METER?

    Sit back, relax, and worry about things that have an actual effect on your life.
  16. (*steve*)

    How To Get Pure Sine Wave

    Here are two ways (there may be many others) The first one is to generate a sine wave and use it as the reference so your output voltage tracks it The second one is to have a digitised sine wave stored in a lookup table in your controller that is stepped through at the appropriate rate. One...
  17. (*steve*)

    Boolean Expression to 2-input logic gates only

    Just be aware that a 2 input XOR gate may not be an allowable gate. Check this out, if you can.
  18. (*steve*)

    mppt charge controller

    Yes The second sentence of my post (that you didn't quote) would only be useful for the panels if the DC-DC converter was a simple boost converter (as you point out).
  19. (*steve*)

    mppt charge controller

    No it won't. Your battery is not a resistor. And most loads are not resistors either. If you have a buck (or boost) DC-DC converter, the mark/space ratio is determined not only by the voltage that is required, but the current which is drawn. Typically the voltage is regulated by the SMPS...
  20. (*steve*)

    Transmitter to oscilloscope

    yeah. If your scope is set for a 50 ohm impedance, the 50 ohm resistor is probably only rated for 1/2W If there is no load on the transmitter output, the voltage may be far higher. Even if it is connected to an antenna, impedance mismatches can cause standing waves which will result in the...
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