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  1. S

    help about AC ampmeter

    I'm with davenn. You want a current reading from a non-contact device. Not one actually wired into your circuit. There are a lot of devices for that purpose, Google them.
  2. S

    electronic drummer / transformer wiring / capacitor rating

    Ok Donr, I was worried you were going to 'earth-ground' one of the transformer wires. Transformers have primary windings, where the input voltage is applied, and secondary windings which can increase or decrease the input voltage: 'Transforming' the voltage to what you want. In your case...
  3. S

    electronic drummer / transformer wiring / capacitor rating

    Somebody on this site will probably look for the exact transformer you listed. Don't ground any of the wires coming off the transformer, none of them are grounds. Someone will have to check the drawing on your transformer to be sure: TYPICALLY, that 'center-tap' will provide 12VAC (Hence...
  4. S

    two way switch wiring help

    What is so difficult to understand? Run a short wire from the switch green ground screw to the wire nut that has all the other ground wires in your plastic box. If you don't do that, and you're in the States, and your house burns down, the insurance company is going to find a way to deny...
  5. S

    two way switch wiring help

    Everybody uses plastic 'gang' boxes anymore cause they're cheaper. If you're in the States, Electrical code would require (probably) 14-2 wire (14 gauge-2 conductor), but also (maybe 14-3 for your traveller) inside that romex insulator jacket, will be the (uninsulated) ground wire. It doesn't...
  6. S

    No Output on Right Channel

    I don't know. My kid put the wrong speakers on his audio amp, and blew the speaker protection fuses. If the fuses weren't there, he probably would've taken-out the output amp transistors.
  7. S

    pbc 108 transistor

    I Googled this device too. It does exist as a PBC108, but I couldn't find a data sheet for it either. If it's the BC108, I did find data sheets on that. I'm not too familiar with the BC prefix, I think it's European, but I do know that at one time some manufacturers did mark (for example)...
  8. S

    two way switch wiring help

    You've got the terminology right, the 'traveller' is the red wire. This circuit is very common for wiring two switches, one to enter a room at one end, and exit the room on the other side of it. Google it, and you should easily find the circuit. Any household wiring book will show it...
  9. S

    correct power adaptor?

    Radio shack used to carry them, maybe still does. Make sure you've got your polarity right on that DC plug. (They're made both ways, internal barrel positive, or negative. Make sure you've got the right one)
  10. S

    how i can find resistence value by code?

    If they're just resistors, Resqueline's advice is the best idea. I'll mention that when I get stuck for SMD markings, some guy in France spends a lot of time finding manufacturer's markings/identification. I Google: matthieu benoit, and whatever cross reference I'm looking for, to see if he...
  11. S

    NiCd Zapper

    Electronics Goldmine used to have manufacturer's data sheet for their items. Did you happen to ask if they had the data on those two transformers they used to sell? I built one of these things 30 years ago. It passes a high current through the battery, to burn-off material that tends to...
  12. S

    Soldering Issues

    I keep a block of Sal Ammoniac (Ammonium Chloride), to re-tin my soldering iron tips. But I've seen small (cheap) containers of roughly equivalent stuff made specifically for re-tinning of the tips. Check around. Anybody who does a lot of soldering is familiar with your problem, and they...
  13. S

    Trying to resolve issue with electronic gadget

    U1 may be bad, but with 11.5V on every other pin, you've got other problems. Start with your power supply and work your way to this circuit. I'd pay particular attention to C5 & C6.
  14. S

    How to record voltage spikes?

    Dranetez makes a wide variety of voltage spike recorders. Everywhere I've worked, that's what we used to monitor power spikes.
  15. S

    Why does Capacitor doesnt pass DC>?

    Yeah, or take a small electrolytic can apart, and look at it. The plates are separated by the dielectric. The positive plate never touches the negative plate. Hence, no ability for DC to flow from one to the other. The voltage flows in AC, because as the waveform rises and falls...
  16. S

    Shorting Power Supply

    If you run out of wire, stick a hefty wattage resistor in-line, to limit the current through your wire.
  17. S

    Motorola K50T60

    www.datasheetarchive.com
  18. S

    What am I looking at?

    Ouch, that 'cycles' us old folks. ('Hertz')
  19. S

    MY T.V.'s POSSESSED!

    Let me add to warf135 post. I live where we have evaporative coolers. High humidity getting into the electronics, maybe because of warf135 post, maybe for other reasons; moisture makes the electrical contacts inside the chassis, turning the TV on or off, and screwing with the electronic...
  20. S

    Need a controller

    What are you using it for, any specs on your motor? Voltages being used, amperage, rough guess on motor speed, particular torque demands? The more you tell us, the better help we can be.
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