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quincy

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  1. Sorry, here mr-lee-catcam.de
  2. http://optronik.tripod.com/cgi-bin/loader.pl?pe_catcam.htm heres a fun project that i think could progress a lot if it was added here at electronics lab id like to do it, but i have no idea how to start programming microcontrolers my goal here would be to rework this project to be easier, with just a timer instead of a microcontroller, and add it to the projects here. but first id need some help with timers, becouse i dont know how to do that im going to contact the guy and see what he thinks about this
  3. ha funny story speaking of capacitors, though, couldnt you charge a ceramic capacitor with a 9v so that it is charged up beyond 9vs and then fire? just considering that you dont really want to fire that rapidly. or you could have a couple of capacitors charging up while you werent using it, and when you got into a more vicous battle you would have several shots saved up. and speaking of the vents, wouldnt the explode at much less current if there were no vents? i was thinking you could heatshrink it as far as a more complex and more efficient circuit, i have no idea. but if i thought about it a lot i think i could get the mechanics worked out
  4. okay, im not asking you anymore, but ive tried a 2n4922 (http://www.onsemi.com/pub/Collateral/2N4921-D.PDF) and a 2n6037 http://pdf1.alldatasheet.com/datasheet-pdf/view/21704/STMICROELECTRONICS/2N6037.html and i cant get it to work. i also used: 1k pot 9v battery 1uf 50v electrolytic capacitor 8ohm, probably .5w speaker will all npn transistors work that arent darlingtons?
  5. yaay! i wish i had a lab what transistor did you use? i was thinking of using mj9001 or 9000 or 2n9000 i cant remember, obviously but something from motorola thats one of the round ones, and i think its 40v npn and darlington supposedly used for switching applications do you have any idea if that would work alright? edit i guess ive been rather vague im trying to find the datasheet
  6. ah. i see. well, i might try some anyways, considering i get them all for 75cents at axman ill try any other transistors i can get for cheap there, and update this page with which work. or maybe i could update the project? does anyone know how i might do that? anyways, thanks
  7. thanks! but what about the transistors as far as darlingtons? what does anyone think a darlington npn might change in the output?
  8. i'd like to know a lot of stuff about some of the audio oscillators that are projects here. i thought id just start a general discussion :D to start off, i was wondering about the kind of transistors that can be used for the reverse bias oscillator. -can you use NPN darlingtons? and were can you put a potentiometer or varistor in the circuit to control the frequency? -thanks, quincy
  9. drawing it would be tedious, but a good way if your more computery, you can do it in paint either way, id like to see it, because ive been looking for a simple audio oscillator cicuit myself
  10. i thought mosfets were transistors i thought it stood for something feild effect transistor
  11. thats not that special this is spam, isnt it
  12. thanks! at the time i was looking around for schematics, those were the only two i could find that seemed right.
  13. oh, and also, does anyone know anything about the people who designed these amps? would it be helpful to contact them? or do they only speak russian or something?
  14. here are 2 amps that i am thinking of building: http://www.electronics-lab.com/projects/audio/017/index.html http://www.electronics-lab.com/projects/audio/005/index.html which should i build? i am aware that the first has some errors in the schematic and the power supply. i also probably need some help figuring those out too.
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