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  1. 12vdc

    led lamp assembly help

    Is the purpose of the resistor not to regulate the current? If i can do so with the regulating module can i not leave out the resistor?
  2. 12vdc

    led lamp assembly help

    I bought a voltage/current regulating module off ebay. going to try 3.0v @ 150 ma for a single LED.. Sound safe?
  3. 12vdc

    I'm looking for a small 12v connector

    I don't know if this is going to be a one of unit or production. I have had interesting results with "RCA" sockets
  4. 12vdc

    led lamp assembly help

    I took some webcam pics, I did find an obscured (+) on the front of the board and the flat side of the LED case. As i have traced back from the power supply connections the polarity was correct. The layout is as advertised :D in the cheesey text drawing above. Now 3.5 x 6 = 21 v plus the 75 ohms...
  5. 12vdc

    led lamp assembly help

    Yes many a meter. I am usnsure of what voltage these LEDs operate at, knowing that would be the best start. . I know there are so many new developments daily so thses could be anywhere from 3.5v to 5 volts? Hmm.... (VE3 part of the world)
  6. 12vdc

    Looking for receptacle lube

    The lamp is 500 watts and the plug/receptacle contacts arc when connected or disconnected. Thanks for the replies.
  7. 12vdc

    led lamp assembly help

    I messed this up. I'll try again. There are no decals, part numbers or any writing on the lamp housings or boards. To simplify this, I'll tray rephrasing. I have 6 white LEDs and a 75 ohm resistor in series that is fed by 12Vdc. I have 180 of these units, none work. Will post better pics when...
  8. 12vdc

    led lamp assembly help

    Sorry to post like this in pieces, my connection "times out" randomly and I lose all I have written I will try to explain better. There are 5 lamps, daisy chain. I tried connecting power to each individual lamp assembly and chained. Each lamp has 216 LEDs. the chances that all 1080 LEDs are...
  9. 12vdc

    led lamp assembly help

    2 pics, if they show up, top rail is 12V + the bottom is 12v - whick connects to each adjacent board I made an error in my initial post, " it contains 6 boards in series, 12 vdc, each board has 2 rows of 18 LEDs (white)" should have read : 6 boards are in parallel, (something like the LED...
  10. 12vdc

    led lamp assembly help

    here is my cheesey attempt at a schematic. 6 diodes in series + 75 ohm resistor. (+) ------o---o---o---^v^v---o---o---o----- (-) o = diode ^v^v = 75 ohm resistor (SM package marked "750")
  11. 12vdc

    Looking for receptacle lube

    I am not confident using anything petroleum based near potential sparks/heat. Hmmmmm?
  12. 12vdc

    led lamp assembly help

    hey all I acquired a lamp assembly, 42" long, extruded aluminum case approx 2"x2" it contains 6 boards in series, 12 vdc, each board has 2 rows of 18 LEDs (white) each group consists of 6 leds in series with a 75 ohm resistor between led 3 (-) and led 4 (+) the leds do not glow, yet the...
  13. 12vdc

    Looking for receptacle lube

    I have a power cord for (for a flood lamp) that I insert and remove often, is there a lube for 120 Vac contacts for a receptacle / plug ? ( I wifi at the moment :D )
  14. 12vdc

    Rest in Peace, Kris

    The world loses wisdom and knowledge everyday, some people we know of and some we do not. We knew Kris. R.I.P.
  15. 12vdc

    Contact repair help needed.

    The solder idea is possible assuming the watch case will not melt. I was going to suggest "tin" the existing contacts, and 4 new ones on one side then fuse the new contacts over the old ones. Then again the temperature issue:eek:.
  16. 12vdc

    Multi stage shift light with PWM.

    Does an LM3914 IC help in any way? What is the vehicle? (just curious about ECM/control module type/brand)
  17. 12vdc

    Homemade starter relay sticks

    A starter Bendix(brand name) for a "starter drive". It consist of a drive gear attached to a sprague (one way clutch) which rides on the motor's main shaft. There are no electrical contacts. You must mean "solenoid" which on most newer cars is the combination solenoid (to engage starter drive...
  18. 12vdc

    Homemade starter relay sticks

    IF you decide to get a factory solenoid a generic Ford replacement (1965-1985) should sell at parts stores for $6 -$10. (and yes the Ford version uses the 2 copper "T" head bolts connected by a large copper washer and rated for 300 and more amps)
  19. 12vdc

    Help ID "Philips Remote alarm"

    Just curious whether it has any value. Trying to "clean" my shop
  20. 12vdc

    Help ID "Philips Remote alarm"

    There are 3 trim pots on the rear. 1 is time delay (guessing how long sensor must be in a closed state before sounding alarm) 2 is the above mentioned PPM (parts per million?) SENSITIVITY LEVEL? and 3rd is alarm volume. There is a barrier strip with 4 contacts if i short 2 of them the alarm...
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