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  1. S

    in need of some comparator help

    The most valuable asset people WITH fundamental electronics knowledge have, are the manufacturer's data sheets, on the devices we use. People here can help where you need it. Did you find and check the data sheet for the LM2903? Check it and see if it might do what you want it to do, and we...
  2. S

    Are The Enviromental Wackos Responsible For This?

    My dad loved MacGyver, the guy who could do anything, with nothing. Maybe it's not the environmental wackos, so much as the entertainment industry wackos.
  3. S

    please help me to identify this diode

    additional input: Is there a mfgr logo on it that you can identify? That might make it easier to look for. I've run across some TVS (transient voltage suppressors) that look like diodes, and are only identified by the characters on the device. We MIGHT be looking for the wrong info, if...
  4. S

    Helpful Tool

    Nobody here you've talked to so far randomly abuses posts. If you feel abused, it ain't random abuse.
  5. S

    1 basic question

    I think it would help if you tell us where you're at, so somebody with the same type of electrical grid can give you specifics on your problem. Failing that, the 'works', 'doesn't work' reasoning may very well be in what exactly the 'applicances' are that you're trying to energize. I am...
  6. S

    non conductive adhesive choices

    RTV is a particular type. If you've got specific questions, contact the web or phone number on the packages of each type you're interested in, and ask the mfgr for specifics on their particular product.
  7. S

    Are The Enviromental Wackos Responsible For This?

    Yeah, the scene looked cool from the movie. A movie-magic blast that can rip the skin from your body without moving the bones an inch. Not possible, but not much in the movies is possible anyway.
  8. S

    Roflcopter

    Yeah, lightning bolt logos look interesting, but they always cause me bad luck when they happen on the circuits I'm repairing, so it probably wouldn't be a good advertisement for this website. Pretty much everybody can recognize a resistor as a reference to an electronics website.
  9. S

    Sanyo Rice cooker ECJ-S35S repair

    Sounds like you don't have a DMM (digital multimeter) to check circuit continuity. It's a pretty simple check, and would isolate the problem quickly. If you don't get the problem solved, someone here will respond to any other questions about this that you have in the future. Good luck with...
  10. S

    1 basic question

    In any power outlet, there is a 'Hot' wire that carries the line voltage, and a "Neutral', wire that completes the circuit. The plugs for most appliances (in th U.S.) nowaday have one tab larger than the other tab that you plug into the wall, effectively 'polarizing' the hot from the neutral...
  11. S

    Please help me repair shorted out TV power supply

    You're describing about the worst possible scenario I can imagine for a circuit failure. If you energized the circuit with the board on a metal surface, ANYTHING (and probably a lot of things), can be damaged now. I don't know what you mean by a 'higher rating cap', the ones in your picture...
  12. S

    Are The Enviromental Wackos Responsible For This?

    I worked for the local gas company years ago. One day I wound-up in the field yard, examining miles and miles of chain-link fencing and posts that would be used in the field. Everything, was stamped 'Made in Korea'. I still wonder why it's cheaper to make fence poles and fencing on the...
  13. S

    Early Xmas for me :)

    You just did that to make us Colonists in the States mouths water.
  14. S

    Sanyo Rice cooker ECJ-S35S repair

    Check power circuit continuity. You've most probably got an opened thermal fuse in-line with the heating element. The other half of the family is of Asian descent, and whenever I visit relatives, I seem to almost always have to repair a rice cooker or deep fryer for them, ...always a thermal...
  15. S

    Please help me repair shorted out TV power supply

    Look, there's no reason for four MOV's in your power supply. Those are capacitors.
  16. S

    Darlington Transistors Uh Oh

    We can only guess with no schematic. I'm giving you my 2-cents worth in case you're stuck, with no other input to your problem. I would've replaced both of your transitors, since you blew at least one of them. What caught my eye about your post is the fact that you 'replaced' with a TIP120...
  17. S

    Ever wonder why Windows has more problems than Mac?

    What I've heard is that because there are a lot more Windows than Mac users, there are more people hacking the more prevalent system. With fewer Mac users, there's less interest in hacking Mac stuff. There might be something to Mac being harder than windows to hack, but I've never heard...
  18. S

    Help with electronic terminology

    We're in the States. Like BobK said, we're required by law to have GFCI's on outdoor circuits. You're talking apples and oranges with your question. What's 'safe' and what's 'required'. I'd interpret your quoted statement NOT to mean GFCI. But that doesn't take into account your building...
  19. S

    Assistance2

    If it's a new machine, contact the mfgr, and ask them for an applications engineer to talk to.
  20. S

    I'm serious!

    Who knows? It's what we used in the 1970's (sal amoniac), came in a small white block in a cardboard box. Might be hazardous material nowadays. You clean the solder iron tip, when it's at temperature, you roll the hot tip in the block of sal amoniac and tin the tip with solder. Tins the tip...
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