Search results

Search Forums New Posts
  1. S

    LH2715 Advanced Micro Devices

    This can package was made in 1975. I just spent two months sparing with AMD. (And Google has nothing). There's no mistake, it clearly has the AMD logo on it. AMD says they can't find any information on this device. Anybody have an old 1975 era AMD data book, or know where I can obtain a...
  2. S

    Can I tell specs of transistors from names?

    Heck, it depends on the device. The two transistors you listed are JEDEC, or industry standard numbers. Some manufacturers try to keep particular families of devices with similar part numbers. I used to have to rely on manufacturer data books to get the specs on parts. Now you can just...
  3. S

    Toshiba CRT TV Model 21S1ES- No picture

    As near as I can tell from your description and pictures, your set is working. Since it's a CRT, it is designed to accept the old analog input signal for the picture. Today's over the air signal is digital. All of the new input devices, DVD, BluRay, etc are digital inputs. You will need to...
  4. S

    My New Toy

    You married wisely. I expect you'll still be posting here thirty years from now.
  5. S

    Sony hcd-sa30 very hot

    Are the speakers the correct ones for your amplifier? Ian's explanation sure sounds like the problem to me.
  6. S

    looking to go to school for electronics .. scared

    Sounds to me like you should get into an electrical engineering program. (School) Get part-time work somewhere around the school doing the hands-on work to learn the discipline. Don't stay at one business, unless you find something you like. An electrician helper, a radio/tv repair shop...
  7. S

    My New Toy

    Wow, you could almost be to the west coast by now. Still happy with the potential health benefits of riding? And is your other sweet-heart, (you know, the one who married you), Still your side-kick on the ride-alongs? Happy (day-late) birthday.
  8. S

    capacitor help

    Yeah. It's important to give the manufacturer's name (if you can find it, or see a company logo on the part). Some cap manufacturer's use characters to denote a size of their particular brand. The '2A' MIGHT mean the size/composition of that manufacturer's product line. daveen and...
  9. S

    looking to go to school for electronics .. scared

    You sound like you just want a job in electronics or electrical work, and don't have a specific type of work in mind. If I were you, I'd decide what I WANT to do, and go after THAT specific field. Electrical contracting is different from electronics repair. davenn's right, you just don't...
  10. S

    Anyone familiar with ultrasonic generators?

    You sound like you have limited troubleshooting experience. If you have VOM (volt ohmeter) or DMM (digital multimeter), the simplest thing you can do is to put the meter on the 'OHMS' function (board out of the unit, no power to the board), and check the resistance value of each transistor on...
  11. S

    Delay Relay

    If you have trouble finding them on Google, Look for TDR, or Time Delay Relay. Green Giant told you the specific type you want, of the many types that are available. Also pay attention to the specific time-delay range you want (short duration), because as Green Giant said, some are in...
  12. S

    Anyone familiar with ultrasonic generators?

    Well, is it just 'not working', or have you got some symptoms? Typically, you start with the power supply (check voltage outputs), and work your way through the circuits). Do you have a voltmeter? Does it light-up when you turn it on? Did you check the fuse? Do you see any physically...
  13. S

    Just a simple question for someone that knows

    You asked for 'any' help, so here's a few thoughts you might want to check on: If you're in the U.S., the over-the-air signals are now digital, and while you can sometimes get sound, the picture appears scrambled on the old analog-signal TV's. Do you have a scrambled picture, or do you have a...
  14. S

    CAPACITOR

    'ELI the ICE man', is the way they taught us in school. E (Voltage) before I (Amperage) in an L (Inductor) I (Amperage) before E (Voltage) in a C (Capacitor).
  15. S

    Funny place to play a show

    A 'going green' band. They probably power their gear and the lights inductively, from the transmission towers themselves.
  16. S

    what type of thermistor is this

    Can't see the picture you tried to post. Is it possible to just buy a replacement from the dealer you bought the motorcycle from?
  17. S

    Electric/Battery Metronome

    Since you want to use a mechanical metronome (I bought a wholly-electronic one for my daughter for about $20 U.S.), I'd look at putting hall-effect switches (magnet activated) on each end-point side of the pedulum's travel, and a small magnet on the pedulum shaft itself. Each time the...
  18. S

    PH Level meter.

    You've got what you need, the probe and the circuit within the meter to read the values from the probe. I regret I an unfamiliar with interfacing the the usb card with a PC in an application like this. Hopefully someone familiar with the usb card will come on to help you. My experience...
  19. S

    Water Detector Circuit W/Relay

    I don't know if this is a school project that has to be done a specific way or not. First, conductivity of water is better with the more impurities there are in it. The cleaner the water, the less conductive it is. Maybe your circuit will work better if you move your 'water' contacts closer...
  20. S

    PH Level meter.

    Did your PH meter come with a probe, or did you just get the meter itself. Most probes I've dealt with are for testing PH in liquids. You might want to Google the model number of your meter, and get the facts about it's required probe, and capabilities.
Top