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  1. pier1

    white led

    Hi AG         It is used to fix switches and sockets on them. Brown colour on the back and white in the front made by Anchor . I will try to send a pic .
  2. pier1

    white led

    hello AG,             I bought a new one (luxion 1 star) The Voltage across the led is exactly 3 volts with the regulator circuit . I have mounted it on to a heat sink(aluminium) of size 57mmx57mm square with 3mm thickness( i cut it myself ) and that is now having heat sinking . I want to screw...
  3. pier1

    parallel port not working

    I'm sure there is no spare slot ( its an old system ) . I never thought of this idea . I will let u know tomorrow .
  4. pier1

    parallel port not working

    Hello ESP               Actually I have connected the printer to it . My printer prints its test page but nothing from the comp . The computer also displays its printing, But the printer prints nothing. I have bought a new one but still have the old mother board. My local hardware fellow told...
  5. pier1

    white led

    Hello AG             What is lumens and CCT with respect to LED ?
  6. pier1

    white led

    Hi AG         I have seen in the projects Q/A form, your topic on the mood lamp where in the last a heat sink has been suggested for the LED. Should we use a heat transfer paste (white colour) in b/w the LED and the heatsink ?
  7. pier1

    white led

    Hi AG         Actually I made the circuit on bread board and by mistake i connected the capacitor(1000/25)in reverse but nothing happened to it . Was it supposed to blast ? But it was almost hot by the time i came to know my mistake and switched it off .
  8. pier1

    white led

    Hi AG         So i can use 1000uF capacitor only !!!?
  9. pier1

    white led

    Hi AG         What will be the input capacitor value after the bridge rectifier ?. For one LED the value i put was 1000uF when the transformer o/p voltage was 9 volts .
  10. pier1

    Circuit Diagram Schematic Sites.

    Hi shaim               I feel u need to post your queries on the "SERVICE MANUELS" forum .
  11. pier1

    Free sample chips!

    Everything in chineese !!!!!!!!!
  12. pier1

    white led

    Hi AG         Assuming the current drawn by each LED is 350mA . I have connected a 500mA transformer for the whole circuit . Now to make 5 LED's work together, Will it be good to put them in series with a transformer of more o/p voltage? Because the i/p to the regulator is maximum 40 volts i...
  13. pier1

    0-30volts Lab power supply

    Thanks Ante I've got the Idea now .
  14. pier1

    white led

    Hello AG             Philips has a certified a manufacturer for this http://www.polymer-optics.co.uk/Supa-Hex%20Range%20(Luxeon).pdf .
  15. pier1

    0-30volts Lab power supply

    Hi Ante           Do You mean the outer diameter of the knob should be big for lesser torque we apply, so that it goes smooth ? Can u give me a picture of the knob you use ?
  16. pier1

    white led

    Hi AG         I've seen some lens specially made for luxion 1 watt LED's at         http://ledsupply.com/l2-op-025.php  . What is your suggestion on this ?
  17. pier1

    0-30volts Lab power supply

    Thanks for the value AG but is it a standard value that we get ? . I feel ante's selection is a good one but do you call them a multiturn pot ? or does it have a specific name ??? ?
  18. pier1

    0-30volts Lab power supply

    Hi AG         So is the 100 Ohms pot fine for the fine tune . What should be the value if i need to get a fine tune of one volt ?
  19. pier1

    0-30volts Lab power supply

    hello esp1   Actually i just guessed with no practical calculations . But since u say its going to be fine i just have to try it out . But since AG said you should reduce the value of the existing pot as well, I am confused .
  20. pier1

    0-30volts Lab power supply

    Thanks a lot AG , I was about to wind up after shaftons reply . Will this changes be sufficient ?
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