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  1. I

    aixiz lens

    hi does anyone have a spare aixiz lens for the housing which they could sell to me for a small charge or if im lucky for free :P i tried to make the hold bigger and then lens got messed up so i need it quick. thanks
  2. I

    So, killed my 5th dvd rw diode

    well about 6 seconds, it wasnt even in the aixiz housing and died :'(
  3. I

    making hole bigger on aixiz housing

    hi thanks for that, i actually did search for it but i typed something like "how to enlarge lens hole"
  4. I

    making hole bigger on aixiz housing

    got my housing today and i wanted to know if someone could share the link with me that shows how to make the hole for the lens bigger to allow more laser to get through, i cant seem to find it many thanks
  5. I

    1 question about lm317

    alright thanks i just figured out that i ordered the 3*aaa battery torch rather than the cr123, i'll see if they fit in there otherwise would it not just be a good idea to get a single cr123 battery torch and use a resistor and just a pot with that?
  6. I

    1 question about lm317

    the only thing is that they are quite hard to find and rechargeables ones are only 3v i think i just wanted to know that if it will output the same amount of current if the voltage is around 5-6v rather than it dimming when the batteries start to die out when using just a pot. i'll probably...
  7. I

    1 question about lm317

    ok thanks for a 20x diode, i think 3.3 ohms should be fine which should give around 378ma input and about 200mw output yeah the adj ang out wire of the pot are connected together like this |---------- | | |__ |_|_ | | \ / in adj/out thanks
  8. I

    1 question about lm317

    okay i bought this i connected the resistor to pin 2 and then a pot. joined the pin 1 to it and pin 3 is input is that correct. |------------ | | | |___ | __ | | | |input adj out | 3ohm resistor | | | Pot \ / \/ http://www.maplin.co.uk/Media/PDFs/Module%208067-2.pdf
  9. I

    1 question about lm317

    im going to use 2 cr123's so i will have 6v. 1 laser diode 1 lm317 and 1 capacitor so would it be alright if i just use these and will they give me the right voltage? If the lm317 is used as a current regulator, then will i always have that amount of current until the batteries dies out...
  10. I

    How many diodes have you killed?

    killed 5 good 18x and 20x dvd burner ones maybe 3 laser pointers <3mw another 5mw aixiz one
  11. I

    So, killed my 5th dvd rw diode

    thnx for that but the window actually broke and fell inside. it lighted up but after some work it didnt so i assumed it was either heat, or the window glass broke the tiny pins inside also the other things about fixing broken pins, the tiny tiny tiny wires inside from the + broke and i woudve...
  12. I

    So, killed my 5th dvd rw diode

    lol yeah i sort wouldve done that but the thing was that 3 of them died before being put together into the aixiz housing and two of them werent securely into the battery so the pins came loose. so basically when i have my new diodes, im not gonna put anything together until i have everything i...
  13. I

    So, killed my 5th dvd rw diode

    my fifth dvd rewriter 18x and 20x diode has just died 1st diode- Over powered and then pins broken off 2nd Diode- pins got twisted and i touched the mirrors with a wire and it lighted up woot. But was connected directly to batts so it died 3rd diode- died coz it was directly connected to...
  14. I

    reducing voltage via potentiometer

    no? then what will it be. it supposed to make the pot see 1.25v isnt it. thats you do 1.25/resistance.
  15. I

    reducing voltage via potentiometer

    yeah thanks thats what i eventually figured out :P so i will just add a 3ohm resistor and a pot. 1.25/.003=416 but one more thing, the voltage will then be 1.25v output from the lm317 wont it?
  16. I

    reducing voltage via potentiometer

    alright now i get it after reading ddl's posts on homemade laser minimags lights etc. basically the lm317 will limit output voltage to 1.25 and then the rest of the current depends on the resistor. so if i put a 3 ohm resistor it will be 1.25/.003=416ma etc. i think i should put a 3 ohm...
  17. I

    reducing voltage via potentiometer

    ok now i understand (at least i tink ::) so basically i put a 4ohm resistor in between adj which makes it 1.25v /0.004=313ma roughly if i put a pot after that then to get 3v it hast to be 3ohm to get around 2.91v so (0.004/0.003)+1) * 1.25 =2.91v is that correct
  18. I

    reducing voltage via potentiometer

    ok thanks for that so basically could you plz explain how you get to the 3v coz i cant seem to figure it out with the ohms law so the 5ohm resistor also regulates the current but to 600ma is it? 3/.005 thanks
  19. I

    reducing voltage via potentiometer

    ive read around and basically i want to know do you have to have the lm317 to drop the voltage or can it just be done with a pot or if i was to use it, how would i go about connecting it, 6v input and i want the output voltage to be 3v so i just put in a pot between the adj and out pins of the...
  20. I

    reducing voltage via potentiometer

    hi i made my homemade laser and want to change the power supply to two cr123a batteries that would be 6Volts because they will be rechargables i will use a pot to reduce the current but if i want the voltage to be at around say 3 volts, would just using the pot work SO it would be 6V-3=3...


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