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  1. Tha fios agaibh

    Corning PC-620 120V 1113W Repair

    Just drill down deeper until you have about 3/8" of metal to tap into. Or alternatively drill a hole next to it. I don't know off hand about a match, you'll have to compare the specs.
  2. Tha fios agaibh

    Corning PC-620 120V 1113W Repair

    If you can't find a replacement, you can try and get a similar one and modify the shaft to suit. As far as the triac, redrilling and tapping the mounting hole will take some time. Why not spend another 5 minutes and just replace it?
  3. Tha fios agaibh

    Need help with long distance circuit

    10 amp contacts are overkill, but that should work. The power supply could be much smaller too. You only need about 1.5 watts to drive that relay at 1400ft
  4. Tha fios agaibh

    Corning PC-620 120V 1113W Repair

    Nice work.
  5. Tha fios agaibh

    Piezoelectricity

    Lol, ...and you'll already have your shoes off for the TSA check point!
  6. Tha fios agaibh

    Piezoelectricity

    As for tiles being used by pedestrian foot-traffic to generate electricity; It would be more efficient to make them take off their shoes and drag their socks across some carpeting. Lol. Besides, how obnoxious would it be to hear a click every time you step?
  7. Tha fios agaibh

    Siemens Induction cook top fault

    I don't know what caused this spectacular (thanks Gryd3) fault, but often moisture gets in from pots boiling over on the stovetop and fries the board. The second carbon mark above it in the first picture looks strange. Would bridging with a small path of solder be enough to suffice, or better to...
  8. Tha fios agaibh

    Piezoelectricity

    I was thinking it was much higher than that. This google picture says 4500v for a 1mm gap.
  9. Tha fios agaibh

    Need help with long distance circuit

    Thanks AK, A good explanation but in practical terms, induced noise currents are measured and impacted at the end of the wire pair, not a tiny section in the middle. So when talking about noise induced in a span of wire, the same is implied. (Interference at the end of the twisted pair) This...
  10. Tha fios agaibh

    Need help with long distance circuit

    Ahh, So this wire to wire capacitance is only higher due to increased surface area, not because of the spiralling geometry. You lost me on the second part. Twisting a signal pair does reduce the interference picked up on them, because the induced noise current flowing on one conductor is...
  11. Tha fios agaibh

    Need help with long distance circuit

    Yes I know. How do you explain the claim: twisted wires have more capacitance? They are shorter because they are twisted. If I have two pairs exactly 100ft long and I twist one pair, it will shrink to about 75ft long because of the spiralling.
  12. Tha fios agaibh

    Need help with long distance circuit

    Sorry AK, I meant to say Long straight parallel spans are more capacitive than inductive. I know twisted pair wires are less likely to pick up AC interference. I assumed it is because capacitive coupling is less of an issue. How do you explain the higher capacitance with twisted pair? Is it...
  13. Tha fios agaibh

    Newb looking for help: Connecting phone to old speakers [pictures included]

    I like to fold over the exposed conductors before inserting into to terminals. This will give you a tighter connection and less signal loss. Better yet, pitch that garbage wire and buy some #14ga. It will make a huge difference in sound.
  14. Tha fios agaibh

    Need help with long distance circuit

    I believe long parallel spans of wire are more capacitive than reactive. I would think the reactance would be relatively low unless your dealing with higher frequencies. Telephone companies still add inductors in places to compensate for high capacitance caused by long parallel spans.
  15. Tha fios agaibh

    Need help with long distance circuit

    I would imagine they countered high capacitance by adding inductors along the way. Using twisted pair cable helps block interference, along with using shielded cable that has foil wrap and a drain wire. I don't know what kind of noise the op is encountering, but if you were to put a scope on...
  16. Tha fios agaibh

    Need help with long distance circuit

    I agree it's likely a noise problem, but significant current is not always necessary to trip a sensitive alarm input like that. Capacitance coupling or EMI noise could be spiking the voltage to levels that Biases the input circuit. Perhaps just a high value resistor across the input could be...
  17. Tha fios agaibh

    Electronic Ignorance!

    It could also be interpreted as; They are made with cheap (inferior) capacitors, and poor circuit design. If in fact the caps are only lasting 3 years, I'd have to agree.
  18. Tha fios agaibh

    Electronic Ignorance!

    I can see someone being upset because their tv died twice in 7 years. I can also see some speculation on why it may have failed. It could be either, both or something else completely,like, the instructions were not followed. For example, its mounted over the hot fireplace, or mounted in a...
  19. Tha fios agaibh

    Exactly what component is this?

    Search high and low for a schematic, or devote an entire month to plot out the diagram yourself. (That's probably how long it would take me anyway.)
  20. Tha fios agaibh

    Newb looking for help: Connecting phone to old speakers [pictures included]

    Sorry, my dyslexia is acting up. XLR
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