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  1. S

    My solderstation failed

    Hi Ante and Bjorn and all you others :), sorry i dont have been online for a week, but my computer chrashed :(, i belive it was some kind of virus, i am now at a friends computer and write this. I havent had any possibillitys to check anything at my solderstation this week :(, and not my...
  2. S

    My solderstation failed

    Hi Ante, i just measured the element cold, and its 12 ohms, but the temp sensor element seem to be a little high, 28 ohms. Do you know if it have a positive or negative temp coefficient? //Staigen
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    My solderstation failed

    Thanks tnk2k, thats what i needed, i belive. Also a shematic would be nice, hopefully Bjorn have one. Thank you all :) //Staigen
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    My solderstation failed

    Ok Ante, i will check that, but will the green light go out if the element i at fault? I dont think so, only the element will cool down and the led still lit all the time, but im not shure. //Staigen
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    My solderstation failed

    Thanks Björn(Bjorn) and Ante. The EC-2002 shematic seem so be similar to the WECP-20 (minus the display). Maybe you know by desciption whats wrong. This happens: when you switch it on the green lamp comes on and it start to heat, but in a minut or so the green lamp goes out and the tip...
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    My solderstation failed

    My Weller WECP-20 solderstation failed. Anyone got a sevice manual or at least a shematic for it? //Staigen
  7. S

    Fet driving question

    Ok, so its a stopper then. How large should it be?
  8. S

    Fet driving question

    Me to have problem with uploading picture, how? //Staigen
  9. S

    Fet driving question

    What is the purpose of the resistor between the output from the 555 and the gate of the powerfet often seen in switching applications. See the picture below. //Staigen
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    anybody use msn messenger?

    Thanks Ante, its nice to be back :)! And fun :D! //Staigen
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    anybody use msn messenger?

    Im usally use ICQ :) //Staigen
  12. S

    Impedance matching.

    Hi there Skeith, your transformers voltage ratio is only slight over 31 to 1. You can try to use a 230V mains transformer, one that have a CT  for 115 V. There is also transformer with 2 primaries, each 115V. The secondary shall be about 7 Volt( 6 Volt vill do). A transformer with a rating of 25...
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    Convert 0-30V 3A PSU to 5A or more

    Im probably going to build this one :), but i dont have all the comonents yet :(. The reason for the delay is that the PSU Mixos have and do some testing on, brooke down. He has now repaired it, and hopefully he can do further tests this week. //Staigen
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    Diodes for Infrared Gate

    Hehe, me and MP was replying at the same time! And its both transmitter and receiver at the same time (tranceiver). The right and left output implies that it is some sort of direction circuit also. //Staigen
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    Diodes for Infrared Gate

    Also only the middle diode is a infrared led, the outer two is IR reciver devices! Maybee a IR led can be used for reciving too? //Staigen
  16. S

    power vs. signal frequency

    Than i dont think its going to be a big problem, but a little moore info about the whole thing would help. A brief schematic for example. //Staigen
  17. S

    power vs. signal frequency

    Hi there. This question actually is confusing me a little, are you saying the frequenciy in the signal line is the same as the frequency in the power line and are syncronized? Or do you mean that there is a DC power line and a signal line running close to each other? //Staigen
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    led lighting

    Hi Darinyou, it seems to be programed in basic, it says the prog also is downloadable from Nuts&Volts site. / If you would like to download the software listing, go to www.nutsvolts.com / //Staigen
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    cas interface

    Ok. But that i dont know much about. Sorry i was disturbing, but i was curious. ;) :) :) :) //Staigen
  20. S

    Capacitane switch

    Hey Smaug, something come to my mind when i first see this topic, why not use an emittercoupled clapp-oscillator with a frequency around 200 to 600 Khz or so, with a capacitive sensor as part of the tuning capacitor, and using a 4046 ic to detect when the saltwater is reaching the sensor. I can...
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