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  1. Tha fios agaibh

    Rice cooker tripping breaker when switched on (Zojirushi NP-HCC10)

    I suspect that IGBT has shorted. I'd pull it out of circuit and test. Also, the element coil may also be bad if it's only 0.2 ohms. What does you ohm meter read with test leads together? I would expect it should read a few ohms or more.
  2. Tha fios agaibh

    What is this mini-device?

    Looks like a spring loaded tensioner. I'd look at the bottom of your larger blender. There's likely another one close to where that one came from. Given that it's spring loaded, it may have flew all the way across your kitchen.
  3. Tha fios agaibh

    I Need a Device that Can Tell a PC the State of Relay Contacts

    They do sell usb to serial and usb to parallel port adapters inexpensively. If a one button keyboard is pricy, you could also tear an old keyboard apart and convert it.
  4. Tha fios agaibh

    Men of the forum - help me w engagement ring

    Nearly all women would prefer a tiny $100 diamond that's real over a huge and costly Cubic Zerconia. Nothing like telling her our relationship is fake.
  5. Tha fios agaibh

    Does anyone know the pneumatic equivalent of an electrical capacitor?

    Accumulation tank
  6. Tha fios agaibh

    Mains quick testers.

    @Martin. ...And stole your country. Lol At first I thought you could use one of our 110v testers within adapter, but I hadn't realized your 110v is a midtap. Our 120v (nominally 110v) is half of a mid tap 240v. In otherwords 120v to neutral whereas yours is 55v to neutral. I would expect...
  7. Tha fios agaibh

    Mains quick testers.

    Took me a minute to get "hire tools" means Rental tools in our vernacular. Lol We use 120v GFCI testers similar to your RCD testers. They work fine to give a quick visualization of it being properly wired. The only difference is they are slightly more sensitive and trip with an imbalance of 3...
  8. Tha fios agaibh

    Mains quick testers.

    Couldn't find edit button; Hi Martin, I hesitate to respond because of language differences. Lol Why are you testing the Socket ..(outlet) Instead of the tool itself? Are you tripping the Rcbo ..(Gfi) from current leakage to earth (ground)? I don't like Socket and see...(outlet testers)...
  9. Tha fios agaibh

    Mains quick testers.

    Hi Martin, I hesitate to respond because s), why are you testing the Socket ..(outlet) Instead of the tool itself? Are you tripping the Rcbo ..(Gfi) from current leakage to earth (ground)? I don't like Socket and see...(outlet testers) type testers because they will not tell you if the earth...
  10. Tha fios agaibh

    Hello World

    As long as you have a drive to learn you'll go far. Welcome to the forum.
  11. Tha fios agaibh

    lg tv backlight is working weird

    Best answer: A new TV. New TVs are now so inexpensive its probably not worth the time and effort to repair. With that said, you could the check the voltage from the LED driver circuit (when working) and try hooking up an external power supply with limited current. For example hook up 30v and...
  12. Tha fios agaibh

    Help converting lathe from 110v to 220v?

    I'm assuming you are proposing changing it to single (split) phase 220v. This can be done but it involves rewiring both motors, transformer, and changing overloads and fuses. The current will be cut in half but the power consumption will remain the same. In other words, don't bother if your...
  13. Tha fios agaibh

    Car Reverse Camera - Noise / No Picture

    The problem is noise from the canbus communication on the camera supply. This can be overcome with either a low pass filter or tapping into a clean 12v source that doesn't originate from a control module. You can use the reverse lamp signal to switch a relay which can deliver that clean 12v...
  14. Tha fios agaibh

    Malfunctioning Popcorn Machine (burning resistor issue)

    Think current instead of Power. A zener will pass current in either direction. Best way to test is with a variable power supply and a limiting resistor in series. You could alternately use a 9v battery and about 1k ohm resistor. Then measure the voltage across the zener with a volt meter. It's...
  15. Tha fios agaibh

    Is this motor driver controller IC capable of reading position info from potentiometer?

    Measuring the voltage unloaded doesn't prove the adapter is good. For example you can measuring around 12v output of an adapter but that voltage can collapse to about 1v under a small load. Better to use something like an old automotive light to load its output and then measure voltage. You...
  16. Tha fios agaibh

    Is this motor driver controller IC capable of reading position info from potentiometer?

    I'm guessing what VestavlaScott experienced was the regulator portion of an adapter may have failed causing higher than expected voltage especially when checked without a load.
  17. Tha fios agaibh

    Is this motor driver controller IC capable of reading position info from potentiometer?

    Full disclosure i didn't watch video or know exactly what problems you have. The Datasheet shows a H bridge driver which requires external PWM feedback before it can output power to the motor. I would see if your getting these pulses as well as power where needed before replacing it.
  18. Tha fios agaibh

    Lm339 output

    Thanks Nanren888, I didn't realize 15ma was enough of a load to sink 500mv. BTW, the opto switches on at ~ 1.7v. So a little better than the data.
  19. Tha fios agaibh

    Lm339 output

    I repaired a board yesterday where I had a bad optocoupler driven by a LM339N. I was expecting the output to be 0V (ground) when triggered. (When Neg > Vth) Instead it was about 0.5v. From pin 3 Vcc with respect to pin 12 gnd I got 15v. From pin 3 Vcc with respect to output pin 2 I only got...
  20. Tha fios agaibh

    Wanted: Variable frequency drive

    Powerflex 4
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