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  1. S

    Betamax Capstan Motor Issue

    Same here. Haven't worked on BetaMax in a while, but the problem you described was usually a function of an integrated circuit. Have you got a schematic? The chip had a wide variety of functions, and that was just one of them.
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    60 cycle hum

    I'm with davenn. It's probably an earth ground problem (no connection or bad connection). And yeah, a few years ago there was a big problem with a large quantity of electrolyte the Chinese whipped-up. So bad caps (new) sometimes exist.
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    Wireless Headphones

    Is it time to replace the batteries in the headphones themselves? Maybe they're not accepting the recharging.
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    Greetings...

    Yeah. Don't be shy when you've got some advice on a problem you know about. Some people say hi here, and we never hear from them again. You've got some goods we can use here when you see an issue in your area of expertise.
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    control circuit design

    We used to use programmable logic controllers for that. What are you using for control? (Or is this a stand-alone configuration?)
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    so..... I'm a new Dad!! :)

    Congratulations, Dad. She'd kick you for not giving the basics, let alone the technical specs,..... Like, is it a boy or a girl. I had a good Dad, and tried to raise mine like he did. If you take care of your baby, they'll take care of you when they get older. And like your format line, ...
  7. S

    Robot parts

    Google what you need. www.allelectronics.com www.weirdstuff.com lots of places that sell this stuff, cheap.
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    Transistor Price Question

    Found a broker who'll supply some transistors I'm looking for. The price seems extremely high. Does anybody know if these transistors are really so rare that they're worth the price? The guy wants $77 each for: J2067 J2076 J2078 J2318
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    My new old Precision Tube Tester

    Did you open it up? That's a pretty old model. It might run on tubes itself. I'd check for the parts condition first. then clean-up any electrical contacts that look tarnished or need attention. The manual should give you a basic initial turn-on operational check. (The analog meter goes...
  10. S

    crimper query

    What's your application? Does the crimp have to meet any military or industrial specification? Is this just something you're doing as a hobby on the side? There are a lot of generic crimpers that will work, but if you're doing something that has to meet a standard, you need to stick with...
  11. S

    Help me identify this motor

    I think there are too many 'what ifs' involved here. Rock tumblers are geared-down for a low speed. The motor you posted doesn't have any gearing and will run too fast for your application, (unless you have some type of external gearing). I can only speculate on all the motor wires. Maybe...
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    auto restart in the event of a power failure

    I don't think I need to beat a dead-horse here, I just want to share a story. I was a lifeguard at a public swimming pool during the summers of my youth. The City hired a handyman to handle the maintenance of the pool, so they wouldn't have to pay a skilled, licensed city worker to do it...
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    Bought out printer Help!

    You've gott the manual. Does the printer have an on-board test-mode, or troubleshooting error code function? Did you check the obvious? Is there paper in the printer? No paper would disable most functions and cause the beep. Make sure the paper-sense switch has paper, and if the manual...
  14. S

    auto restart in the event of a power failure

    Having spent most of my working life in industrial electronics, my input is to stand back and carefully evaluate what you intend to do. The fact that you recognize the 'safety factor' here, should give you pause to think. Defeating the manual restart may sound like a nice idea that makes life...
  15. S

    Electric motor heat question

    How old is the motor? Could be worn bearings, drag on the rotor, warped laminations. Does it spin freely, or is it physically dragging with no load?
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    Strange behavior of a new battery in my cell phone

    I've never used Lion batteries, and don't know if that's what you've got. I mentioned on this site once before, that I picked-up some exact replacement niMH batteries that exhibited the issues you have. After several weeks of charge and discharging, they started acting like they should...
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    My Cousin Vinny (Run capacitors and motor direction)

    I don't know the circuit or the motor off the top of my head. My question would be the physical situation concerning the load on the shaft. *steve*'s Google search answer sounds like the culprit, but as a secondary consideration if that doesn't pan-out: Just before the motor starts, is there...
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    some times safe isn't enough

    jc, I see your point. My point was, you don't stand 10 feet away from power-up of 7200V switchgear. If it goes bad, you're going to catch the result.
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    A M signal.

    Did you try hooking it up to an antenna on the roof?
  20. S

    alarm interference

    Harald's idea is interesting, those new CFL lamps, and some of the electronics with them cause RFI. If the push-button on the controller itself isn't dirty or bad, maybe somebody else close buy installed something that produces bad RFI. This may sound dumb, but I've found if you use a small...
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