Search results

Search Forums New Posts
  1. CDRIVE

    20 Watt LED Dimmer Circuit diagram

    This was Marty's questions: This was your reply: What does this mean? We still don't know the color of your LED's which dictate their voltage drop. Also, your schematic indicates 24 LEDs ... not 20. Did you short the Gate-Source to test the FET as I suggested? Chris
  2. CDRIVE

    How to Charge an 8 AA NiMH Battery Holder?

    Your cells are wired in series. Because of this the 2,000mAh rating is not additive. Only the cell voltages are additive with series connected cells. Chris
  3. CDRIVE

    Variable capacitor

    Just an FYI and I know that Dorke knows this: The schematic indicates 0 - 365pF but "0pF" is never going to happen in this world. Chris
  4. CDRIVE

    Variable capacitor

    No, as Collin said, I believe they were =>120pF fully meshed. Chris
  5. CDRIVE

    20 Watt LED Dimmer Circuit diagram

    I don't see any LED current limitting resistors in that circuit. Are they integral to the Led array? Short the Gate to Source to test the FET. The LEDs should turn off. Chris
  6. CDRIVE

    Building a portable solar charger for my laptop!!

    I bought one of these on sale for <$30.00 to keep my Tundra on trickle charge because I cycle far more than I drive. I keep it on my dashboard plugged into an accessory jack. http://www.harborfreight.com/15-watt-12-volt-solar-panel-96418.html Chris
  7. CDRIVE

    Possible help programming a Picaxe 08?

    What don't you understand? Chris
  8. CDRIVE

    Picaxe programming help

    Marty, this app is a simple exe with no dependencies that are not already included in with windows. It does not employ an installer. It's a simple click and run. Let me know if it runs OK on your PC. Uncle Chris
  9. CDRIVE

    Picaxe programming help

    Only X2 parts need directives for configuring a pin for ReadAdc. The 08M2 doesn't need any directives for inputting analog on Pin C.1. The function "ReadAdc C.1,b0" is all that's required. The value that ReadAdc stuffs into the b0 variable can be any value between 0 and 255. I wrote a VB6...
  10. CDRIVE

    Variable capacitor

    FYI, the small transistor radios of the 60's to...?? didn't use air dielectric variable caps. The tuning caps employed in those radios were about 1/4 the size of the typical air gap type of equal capacitance. They used a solid paper thin, flexible dielectric between the plates. This allowed for...
  11. CDRIVE

    clever vibration motor driver?

    That's why all (I have quite a few) of my solderless breadboards are mounted on a much larger wood base. These wood bases make easy work of mounting and connecting large or incompatible components. Chris
  12. CDRIVE

    Possible help programming a Picaxe 08?

    Sorry for not replying but I've been on the road (HELL!!) for the last week +. Suffering a hangover now but I'll get back to you when I screw my head back on. Chris
  13. CDRIVE

    How to turn off a LED with 3.7v

    Bob's suggestion is the best way to go in our energy conscious world. Chris
  14. CDRIVE

    Capacitor test box

    This is a Chinese clone. I suggest you scan through Capacitor Substitution Box search terms. Chris
  15. CDRIVE

    How to turn off a LED with 3.7v

    My nephew Marty is a tad dyslectic so I'll restate what he said a little differently. .... Since you already have an existing LED and the limiting resistor, wire your switch across the LED.:D Chris
  16. CDRIVE

    Searching for motor

    FYI: This topic is related to This topic. Chris
  17. CDRIVE

    Voltage drop across a 1626 tube as a rectifier??

    Good stuff! Saved it! Chris
  18. CDRIVE

    Assistance please with door control circuit

    This question wasn't answered. I was referring to the OP's first schematic posting. Chris
  19. CDRIVE

    Assistance please with door control circuit

    I'm confused again but this time I don't think it's me that's at fault. The schematic states "DPDT (UP-DOWN) Limit Switch" but that's not what I see. Is this a commercial OEM schematic? Another thing that's not making sense is this.. Unless your system requires you to hold the UP or DOWN...
  20. CDRIVE

    coaxial and voltage/amps

    I think there's a "Why?" that's missing. Chris
Top