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  1. CDRIVE

    Political argument (Yeah, this is going to end well)

    Judging by shrtrnd's other posts I think I can safely assume he was just being facetious. ;) Btw, that's why I never joined the VFW. Chris
  2. CDRIVE

    Stop a fan form being a generator

    Sorry, but I don't believe so.
  3. CDRIVE

    on/off light switch/controller

    Telling us that it's a 12V motor isn't telling us much. A 12V motor can be anything from a small computer fan motor that draws a few milliamps to a truck starter motor that pulls 400Amps. Please be more specific.
  4. CDRIVE

    Stop a fan form being a generator

    I'm guessing that the fan is not wired to a true switched (+) rail or neg (far less likely) is not connected to GND. Nothing else make sense. These fans are milliwatters. It wouldn't surprise me at all if the + lead is connected to a sensor circuit of some sort, yet it still runs. Try wiring...
  5. CDRIVE

    DC-DC convertor

    Are you sure you want to build it? They're very inexpensive.
  6. CDRIVE

    on/off light switch/controller

    Not that I know of. In the old days almost no one used the term LDR but Photocell was common. We now have too many optical devices to use a generic term like that. For an LDR it was probably a misnomer anyway. The LDR predates solid state. BTW, I edited that post to include LDR.
  7. CDRIVE

    on/off light switch/controller

    Doable but we need the specs on your motor...Operating Voltage and Current. We also need the part number of your photocell and emitter. Edit: The term "Photocell" is often misused. There are Photo-Resistors (Light Dependent Resistor (LDR)), Photo-Diodes, Photo-Transistors and there are...
  8. CDRIVE

    Increasing motor's RPM + Torque with stronger magnetic fields?

    Yes, I think I know where this track eventually goes. All aboard for the O/U Express! :rolleyes:
  9. CDRIVE

    Digital time zone clock/temprature sensor project

    Dunka!
  10. CDRIVE

    Help! High current DC welding bridge rectifier

    Probably too expensive but.. http://www.weldmart.com/MILLER%20POWER%20DIODE%20PAGE%20MST.htm
  11. CDRIVE

    Help! High current DC welding bridge rectifier

    Have you investigated welding forums? Specialized forums like that will have a knowledge base of suppliers and components . You won't be the first welder that's wanted to do this. ;)
  12. CDRIVE

    invention/adapter

    Dito to this! Is this 100% solid state or does it incorporate a relay?
  13. CDRIVE

    Relay voltage spikes

    We like to keep our threads nice and tidy, so perhaps you could clarify that this is, in fact, a DC relay coil. You made no mention of a DC power supply, just the transformer.
  14. CDRIVE

    Digital time zone clock/temprature sensor project

    CC, got a link to it? I'm sure many of us would find it fascinating. Chris
  15. CDRIVE

    Digital time zone clock/temprature sensor project

    You don't have to know what's inside. You only have to know how to deal with inputs and outputs. That's why they put it all in a chip in the first place.:D
  16. CDRIVE

    Amplifier circuit for speakers

    I have nothing against kits. I was a big fan of Heathkit and still own many of my first kits. My statement is based on experience from teaching an industrial electronics course. Structure from the ground up provides building blocks and a strong foundation to build upon.
  17. CDRIVE

    Digital time zone clock/temprature sensor project

    This statement is 180 deg out of phase. uCs simplify circuitry, not complicate them.
  18. CDRIVE

    Amplifier circuit for speakers

    I'm surprised but I guess I shouldn't be. I would have thought that after CC's link to the pinout you'd have been thrilled to be able to not butcher a Bose design for an unquestionably inferior home brew. IMHO, you're starting your electronics education backward. If you're seriously...
  19. CDRIVE

    grease gun using dc motor - current switch

    Please clarify something for me. The object of this project is to interrupt power to the motor when back pressure becomes excessive and causes corresponding excessive motor current. How long the power is interrupted is determined by the RC time constant of the 555. The time constant on the...
  20. CDRIVE

    Political argument (Yeah, this is going to end well)

    Let's make something clear here. Hippies, who are now Progressives, only rant about "unconstitutional wars" when it's not their war. Since the boy King took office there hasn't been a peep out of them. Chris
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