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  1. S

    Electronic Stethoscope

    Hey Xoy, maybee i can help you a little :) But first you have to start up a new thread, you can call it Digital Stethoscope or something you like. Then we take it from there. //Staigen
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    IF transformers

    Hi walid I got i good laughter when i saw the reply from waferstar :) :D ;D But, what type of if transformer is it? AM or FM? Transistor to transistor? IC? Detector or intermediate? Coming from a junked radio? Oscillator coil? You see, it is many questions. The numders are probably house...
  3. S

    positive and negative voltages

    Hi there chasmith17, velcome to this forum About your question, no, not easily :(! But if you mean from a transformer, yes, its easy! If you have a transformer with only one secondary you can use halfwave rectifiers, just ground one of the transfomer output wire and connect diodes to the other...
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    Problems lately accessing this site

    I also had this problem, two weeks ago, or so, but now it works okay again, it was mostly at around the mid of the day. //Staigen
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    Hey is there anyone has "CMOS Cookbook" written by Donald Lancaster??

    Hey A copy of the TTL Cookbook would be nice to have! :) :D ;D //Staigen
  6. S

    Hey is there anyone has "CMOS Cookbook" written by Donald Lancaster??

    Hi there Mine is also worn out a little :) //Staigen
  7. S

    Hey is there anyone has "CMOS Cookbook" written by Donald Lancaster??

    Hi maverick366 I have the book, but it is a paper book. I can scan a few sides if you want! //Staigen
  8. S

    Sequential Timers with PWM Motor Speed Control

    Btw I belive the tap was for the speakers common supply. No output tranny, cheaper, simplier and better! :) I can get you a simple schematic, if you want! //Staigen
  9. S

    Sequential Timers with PWM Motor Speed Control

    Hehe Hehe, but i'm fatter than you ;D ;D //Staigen
  10. S

    Sequential Timers with PWM Motor Speed Control

    And now i'm here again ?? Thank you :). Then we are about the same age ;D! //Staigen
  11. S

    Sequential Timers with PWM Motor Speed Control

    Hehe Yepp, and a bigger one for the anodes and screens, 108 Volts with taps at 90 and 99 Volts, if i remember right! You used the 90 tap when the battery was new and the others when the battery started to get exhausted! In 1957 transistor radios was very expensive here in Sweden! I dont...
  12. S

    Sequential Timers with PWM Motor Speed Control

    Oh no, now i'm back again The battery was used for filament of tubes like 1H5, 1N5, 1C5 etc etc! :) Nice time :)! //Staigen
  13. S

    Sequential Timers with PWM Motor Speed Control

    Hi again Thats the battery! ;D //Staigen
  14. S

    Sequential Timers with PWM Motor Speed Control

    Hi Audioguru No, i haven't the slightest idea what a #6 dry cell is, but, is it about 2 inches in diameter and about 4 or 5 inches high? If so, then they are called tube glow battery here in sweden. They were aso used for glow plugs in those small engines. I did not had such a plane, i went for...
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    Sequential Timers with PWM Motor Speed Control

    Hi I also remember those airplanes we built, in the 50:ies ;D! But ours were somewhat bigger, they flew about 50 to 100 meters, than you have to rev up their rubber engine again ;D ;D! But it was fun ;D! Of course you should make your plane radiocontroled! //Staigen
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    Sequential Timers with PWM Motor Speed Control

    Hi Ante My thought too, and other buddys with only a modem connection, reading this thread! :) //Staigen
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    BENCH POWER SUPPLY

    Hi there again Um...Me123 But i have ;D! I am just curious, what did you order? //Staigen
  18. S

    BENCH POWER SUPPLY

    Hi again Um...Me123, i have been a little bit busy Of course you should have the LCD DVM if you really want it, i was only pointing you at some of its drawbacks, and it will of course not jump around that much, only when you are just barely over an even voltage when you have a load that...
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    Sequential Timers with PWM Motor Speed Control

    Put the files in a temporarily map(directory), start up RAR(maybee you need version 3.50 or higer) and extract the file, RAR maybee ask you for the path to the next 2 files, just type it in. Hopefully this will work! ;D //Staigen
  20. S

    Sequential Timers with PWM Motor Speed Control

    And the 3:rd part: //Staigen Hydrofoamwmv.part3.rar
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