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  1. S

    Newbie - transistor n3906 to breadboard ?

    Google the data sheet on 2N3906. It's a very common transistor.
  2. S

    Unmarked component

    We haven't seen the circuit. Everyone is trying to help. Considering the problems you're having. I would be seriously trying to get some information from the manufacturer. If you know who made the chair, you might be able to track down who made the circuit for it, and find information on...
  3. S

    Unmarked component

    Sure hope you guys got your device right.
  4. S

    optical knob encoder: HP/Agilent 33120A freq generator, tuning-knob failure

    It's the 5V 'rice' bulb mounted in the encoder housing. The bulb needs to be replaced, but you have to be careful. There are two bulb lengths easily available, with 3 different current ratings. You have to center the filament exactly in the encoder, or you get intermittent reading problems...
  5. S

    Cheap Relays Help!

    There are a lot of good 5v relays because of uses for them in computers. I've had good luck with ones from Panasonic, that generally run less than $5 (U.S.) apiece, ...but there are many others. Check on-line for manufacturers and data sheets.
  6. S

    What Soldering Iron Wattage for PCB Work?

    What you'll need to practice at, is learning to remove the solder when taking-out old parts WITHOUT damaging the printed circuit trace on the board. There's suction bulbs, Edsyn makes a 'Soldapullt' desoldering tool, and there's solder wick. Some traces are extremely easy to damage, (lifting...
  7. S

    Wiggly Capacitors on PC Motherboard?

    A lot of boards these days have small spacer installed under some components that are meant to keep the device up off the board when it's built. Sometimes for heat dissipation of the component, sometimes to relieve stress on the component leads. The spacer dissolves in the board washing...
  8. S

    Battery question

    Were the batteries old and weak to begin with? SOUNDS like circuit is disconnected with pushbutton switch, but you really need to take a look at your circuit. Is there some other current path that is allowing the circuit to discharge when the switch is not closed? Just things to look at...
  9. S

    Difference in NiCad replacement batteries

    www.allelectronics.com I'd just get a newer manufacturer NiCad. Most of them nowadays are more than twice the mAh (milli amp hour) capacity of a 600mAh one. The charge circuit is the same, the battery between-charge times is just longer, because of higher battery capacity. (They're ALL...
  10. S

    RF transistor replacement

    I couldn't find an equivalent. These people claim they have stock: www.brokerforum.com www.westfloridacomponents.com good luck
  11. S

    Parts Supplier

    Alright! I learned something new from this post too.
  12. S

    Parts Supplier

    Here's a few on-line: www.partsexpress.com www.Jameco.com www.MCMelectronics.com Have you got a 'Fry's Electronics' in your area? Check the phone book, a Radio & TV electronics parts supply store? Just for trivia, the 'TRS jack' is probably just 'Tandy Radio Shack', from whatever...
  13. S

    Looking for replacement of (A2726 U913) MOS FET.

    Try Googling the manufactuerer of your mother board, somebody may have a schematic available for it. I don't know if you've got it crossed correctly or not, you can try to determine from the datasheet you found, if the application and pin-outs for your device are similar. Typically...
  14. S

    Controlling multiple dimmers from one potentiometer

    It's probably the TYPE of dimmer you're using. Most of them are thyristor controlled, they have a voltage point that must be reached to switch on, and conduct current. With multiple loads, I would guess that as each voltage is energized, your trip-voltage point is changing, and the dimmer...
  15. S

    Cant seem to measure mA using my multimeter

    Yep, one jack is for volts, and the other is for mAmps. When you hooked-up to read volts with the mA jack, you blew it's fuse. mA meter reads in series with a circuit, it's a virtual short to the circuit under test, intended to read the current through the circuit. daddles pegged this one...
  16. S

    Help pls !.. special present for a child

    Sorry paragonbuilding, I don't have an i-pod, and am not familiar with what it can do. I don't want to discourage your desire to personalize the ride for little one. I just remember being discouraged at how little my kids appreciated the work I put into their toy modifications. There are so...
  17. S

    Help pls !.. special present for a child

    Other Surplus-Type elec gear: www.smcelectronics.com www.nutsvolts.com (project type magazine) www.ramseykits.com www.weirdstuff.com www.allelectronics.com I just try not to reinvent the wheel, unless this is a daddly-priority challenge.
  18. S

    Transistor/semiconductor/triode?

    Well hells-bells. The VN061L may not be the ONLY bad part. If somebody is willing to replace your problem camera, what is there to think about?
  19. S

    Need help with linear actuator!

    This is industrial electronics that's in use everyday. I'd be Googling what you're looking for. Omega, Newport, turn out a lot of application data for their products. Anybody that makes pressure sensors and switches will have information on applications for their products. Find the...
  20. S

    Redesign of a solder iron help required.

    Wouldn't be of use to me, but maybe you'll get feedback from somebody else who could see a use for it. Biggest assist for me, is ability to change temperature of solder tip. Some work requires very low operating temperature, other things with more mass, re- quire higher tip temperature...
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