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  1. S

    LM317 Variable power supply

    Sorry, forgot values! ??? R1= 6.8 ohms R2=R3= 0.47 to 1 ohms(depends on current throu transistors) R4= 120 ohms(acording to datasheet, some LM317 can use 240 ohms, acording to Audioguru) C1=C2= 0.22 uF C3=C4= 10 uF Transistors can be TIP36 or similar //Staigen
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    LM317 Variable power supply

    Here is the sematic. //Staigen
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    LM317 Variable power supply

    Not exactly, but it is similar, well, maybe not, after a closer look, mine is much simpler, and its safe, and have a good regulation. Audioguru know what i mean, only by the description i gave. I will upload a schematic, as soon i have done one! I will do that at once, but it will take a few...
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    LM317 Variable power supply

    Hi Replies #124 and #126 in this topic! //Staigen
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    My Lab

    Nice! That monitor look big! ;D But, what is that in the upper part of the pic, is it a robotarm or something? ??? Also the scope look nice, and the PSU:s ;D //Staigen
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    LM317 Variable power supply

    Also look at my reply's, they are simpler, uses only one IC. For 10 Amps use several transistors, and reduce the current thru LM317 to somewhere around 100 mA before the transistors start to conduct. Restrict the current thru the transistors to 2-3 Amps or so. //Staigen
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    12V DC to 115V DC?

    Hehe, ok, i did not thougt of that it was a reversible DC motor ??? :) :D ;D //Staigen
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    LM317 Variable power supply

    Can be done in an another way! Bye using a pair of diodes in series with the input of the LM317, also use emitter resistor for the PNP, the diodes should also be paralelled with a resistor! //Staigen
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    Can I use a 220 ohm resistor with LM317?

    Hehe, nice! //Staigen
  10. S

    12V DC to 115V DC?

    Hi Awful lot of connecting wires on that motor ??? //Staigen
  11. S

    LM317 Variable power supply

    Hey, you can use a PNP transistor to increase the current! I belive there is a description in the datasheet, or was it in the application notes for the LM117/217/317. Look! //Staigen
  12. S

    Can I use a 220 ohm resistor with LM317?

    Ok Audioguru! Wich one of the LM317:s are identical to the LM117? //Staigen
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    Problems lately accessing this site

    There is something strange here, some dont have any trouble and others have! When i was away for several weeks last year, i belive it lasted over the year change, i could not access E-lab either, and that lasted for several weeks! And i could not get in contact with any of you either, via email...
  14. S

    Problems lately accessing this site

    Well, you seems to be the lucky guy here, many others seems to have problems! Is it anyone else that have problems? Please report here! //Staigen
  15. S

    Can I use a 220 ohm resistor with LM317?

    Hi there Ferocactus, velcome to the forum :) Of course you can, but, as far as i know, the resistor should be 120 ohms for the LM317! The 240 ohms resistor is for the LM117! Look in the datasheet! //Staigen
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    Problems lately accessing this site

    I meant that the server is overloaded, it can be more than Electronic-Lab that resides there. Or maybe it is not serviced properly. Or, as you say, Audioguru, the site is restricted sometimes. At least i got Mixos e-mail adress. ;D ;D Hey Mixos, do you know anything about this? //Staigen
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    Problems lately accessing this site

    I belive it is overloaded! Also, im almost sure the site was on a diffrent server for a while last sunday! The IP-number is(or at least was last sunday) 204.157.9.58 I do a tracing again! Its seems to be the same! 204.157.9.58 But, at at least one time i run a tracing last sunday it was not...
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    Problems lately accessing this site

    Oh NO! Now the problems seems to start again! Maybee the server isn't stable? //Staigen
  19. S

    Problems lately accessing this site

    Hi there Audioguru You can send me an e-mail too, if you wish :) The adress is [email protected] Hi hotwaterwizard I wonder what's happpened? It happend on sunday, first it became very slow, so i run a "tracert" and was also pinging the server, but that did not gave anything. The same...
  20. S

    Problems lately accessing this site

    Hey Now it seems to work again! ;D ;D ;D //Staigen
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