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  1. Xenobius1

    Strange Screening Problem

    Hello all, I have built this circuit http://www.electronics-lab.com/projects/sensors/008/ and it worked. However I have a problem. I am using a DC adaptor to give it 12v and so im not so sure if its pure dc. The problem is that, IF I touch the positive metal part of the power supply, the...
  2. Xenobius1

    Variable AC Dummy Load

    Hi guys, I am looking for a circuit so that I can build a variable dummy load AC not DC. Could anyone help out? I am currently using rows and rows of 200W bulbs .. but they heat up too much. Any other IDEA apart from Resistors which are really really expensive? thankyou PS. I did find a DC...
  3. Xenobius1

    Computer IDE Switch

    Dear friends, I have a problem right now. I have 2 hardisks in my pc and 3 optical drives. Since I use all of them, I have to turn off the computer, unplug a cd-rom and plug in my dvdrom and turn on the computer again. Is it possible to make a switch not on the power but on the IDE cable so...
  4. Xenobius1

    19v 5A PSu

    Hello, I would like to build my own Laptop Psu because the original one broke. Could somone kindly enough point me to a Circuit of a Fixed PSU which gives me 19v @ 5A ?? ALSO since a PWM Power Supply does not heat up that much, is it good for a Laptop?? thanks a lot PS.. Speaking of PWM.. I...
  5. Xenobius1

    Magnet Wire or Enameled Wire?

    I would like to build a circuit which has a coil and it stated that it should be "FLAT MAGNET WIRE" . Ok I understand FLAT .. (any wire I choose must be bought Flat and not round and infact I found on the internet which is Flat) but I was searching a reliable shop and it stated that Magnet wire...
  6. Xenobius1

    Magnet switch and smart card reader

    Hello people, I would kindly like to ask somthing which is giving me a lot of trouble finding on the web. I am trying to make a small cupboard with strange methods of opening it!! I was thinking about making somthing from inside the wooden door at a random place only known by me, and when I...
  7. Xenobius1

    Telephones!

    Hello I have a tiny problem here at my house.... I wish someone could give me a hand ! At my House I have 2 phone lines. My Mothers is 123456 and mine is 987642 My mums line is downstairs and I got the other one upstairs. Is there a circuit that can BOND these 2 together so that when I phone...
  8. Xenobius1

    Bed Timer

    Hello I would like to stop risking of breaking my legs everyday at night! ;D seriously now .. I have my room lights far from the bed and I hate that so I was wondering if I could make a small SWITCH so that when I press the switch the lights will go ON for 30 seconds and than off again. In...
  9. Xenobius1

    Strange Voltages

    Hello I would like to ask a question. I have a circuit which need 2 different voltages. 7.6V and 3.6V. I would like to take the voltages from a PC Power Supply which has 12V and 5V. Which when measured with a multi meter are truly 12v and 5v. My Problem is this. How can I get 7.6V from 12V...
  10. Xenobius1

    PIR sensor

    Hello I was at the local electronics shop and I bought a PIR (like a transistor with 3 leads and a smal screen on it's head. I would like to build a sensor so that when my neighbours cat jumps inside the house from the window, I would know with the help of an led and a small beep. Could anyone...
  11. Xenobius1

    IR Remote Control Tester

    Hello I am going to build the IR Remote Control tester found on the Projects section of this website and I see that in the schematic, you can put a Volt Meter to read the power of the IR. I would like to modify it so that instead of a volt meter, I put 6 leds (2 green, 2 yellow and 2 red) and...
  12. Xenobius1

    Laser Cutter

    Hello all I would like to build a cutter for PCBs and I thought I'd do somthing cool with a laser to cut pcbs! Is this possible? thanks
  13. Xenobius1

    High current fixed voltage

    Hello all I would like some help in building a fixed voltage. I have 12vac 12A which I would like to make them 12VDC Fixed and 5vac 5A which would like to make them 5VDC Fixed. I know I have to pass them firstly from a bridge ... I bought one which can go up to 25A so now you can say that...
  14. Xenobius1

    SX28AC/DP

    Hello I have 9 SX28AC/DP Ics.. for anyone who doesn't know what these are, these are programmable ics (just like a PIC) but they can go extremely fast ... 50Mhz or more. You can find their datasheet attached About price send me PM .. thankyou SX28AC.pdf
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