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  1. S

    Internship in a US Electronics company

    I don't know if you're continuing studies in the U.S. while doing an intership or not. It'd help you a lot if you identified which U.S. State you would like to work in, and look for companies operating in the city of that State. Decide what you want. A particular field of electronics, or a...
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    Practicality of using capacitors as a power source

    The call what you're talking about 'supercapacitors'. Google them.
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    Internship in a US Electronics company

    www.SourceESB.com They send me a hard copy every year. Lists component source companies. You really should consider the type of industry you'd like to work in. Military, medical, food services, industrial, computers, peripherals, whatever. Isn't there some particular device or equipment...
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    CRT TVs keep blowing up.

    You've already got advice on power problems. Here's something else to think about: Where I lived in the summer, the basement was a high humidity environment. If the TV innards are moist, and you fire-up a 300watt CRT television, you can blow some circuits. I know I did. Just something to...
  5. S

    two heaters

    You need to be more specific. Side-by-side doesn't say much. How they're wired to your power source will get you a good answer. Are they actually commercial floor heaters for personal use? Just plugged into the wall socket together? Or some type of circuit 'heater', wired into a circuit...
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    Speaker goes out on a Fisher CA-283 Amp

    I've had similar problems with my Kenwood amp. Contacts somewhere are dirty or worn, when you up the volume, you reach a breakover current point where the circuit conducts again. Not familiar with the Fisher problem, but sounds like somebody has identified the weak leak in your circuit...
  7. S

    Help with simple circuit

    I THINK he put an ammeter directly across the battery terminals to get the 2.5amps. With no load. (No resistor at all) A direct short.
  8. S

    Help with simple circuit

    Theoritically 90ma. This is a battery with no regulation. Part of this circuit is the BATTERY characteristics and resistance, and that's not part of the theoretical calculation here. Your battery is low now because you basically 'shorted' it for a short period. Damaging it. You need the higher...
  9. S

    Oscilloscope help, please :)

    What PROBE are you using with your scope? It'll say on it 1:1 (one to one), 10:1, 100:1, or may be a specialized probe.
  10. S

    LM317 as current regulator

    The LM317 is and ADJUSTABLE voltage regulator. You'll need more to your circuit than a resistor and an LED. Google some LED circuits using the LM317 to get the voltage ADJUSTED to what you need.
  11. S

    Help with simple circuit

    With a 9v battery across a 100 ohm resistor (you didn't specify the wattage), your full 9v battery voltage is dissipated across the resistor. Most 9v volt batteries these days are actually in excess of 9v when they're new. At 100 ohms, there is very little resistance in your circuit, and...
  12. S

    Fusible resistor identification

    You can identify flameproof resistors, by the vent holes they have on the ends where the axial leads attach to the resistor.
  13. S

    ADX:203EB

    File one edge of each standoff, so the connector will fit.
  14. S

    humidifier hums when plugged in but turned off

    Typically, the hum would be the transformer inside the unit. Tech support might consider taking it back. My guess would be poor lamination job in transformer construction, or maybe even loose fasteners holding the transformer down. Or broken housing screw-holes where the fasteners attach...
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    Fusible resistor identification

    It SOUNDS like a simple flameproof resistor. NTE has a wide variety of them. The purpose of the resistor is to limit the current. I would imagine there is a fuse elsewhere for your transformer input. (Look for it. If it's there, your device is probably not a fuseable link). If you can't find a...
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    Internship in a US Electronics company

    Good luck. Most of the notable U.S. companies I know of do all their hardware overseas now. You'll have to figure-out exactly what you're interested in doing, then look for a company that still does that work in the States. Design? Integration? Manufacturing? Service support? Maybe if...
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    WACOM PTZ-630 overheat=plastic housing on Mitsubishi chip

    I didn't see any on the Google searches you probably checked also. You could try finding a company that repairs them? Frankly, that's some pretty heavy damage. I would think your board has other problems too. Replacing the CPU might only provide you a short additional life-span without a...
  18. S

    Fusible resistor identification

    ... or maybe info on the manufacturer of your board. Some manufacturers like specific designs for their power supplies that we'd recognize by model or mfgr. Right now we'd be doing a guessing game.
  19. S

    Mystery IC T19

    I don't remember the link, but there is an extemely long Philips SMD cross reference available on-line. (If your circuit is not Chinese, you might consider looking for it). It might help us if we knew the manufacturer of your circuit. The issue I run into, is there are hundreds of Chinese...
  20. S

    Solid State 110 Volt timer delay circuit help

    It's up to you. When I consider the time and effort to build something that is already in existance. I decide how made-to-order the circuit needs to be for my application. They make 'Time Delay Relays' (TDR's) already. Which is what I would use in your case, rather than taking the time and...
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