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About monoman

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    Advanced Member
  • Birthday 11/03/1987
  1. CCD's and CMOS image sensors

    yes, your completely right elix, thery're really expensive at the moment, ive taken to disassembling webcams, salvaging both the electronics and the included optical assembly, even though the ones i have been able to get hold of are fairly crap quality. ::) what experience do you have in this area? (particularly in acquiring these chips) I would really appreciate any more info that you could share with me, thanks, monoman
  2. CCD's and CMOS image sensors

    hi, ive been searching the net for ages, for a good chip, and this is the closest i have got to what i need; TC246RGB-B0 on Texas instruments website: and the datasheet: however, on the first link (above) the chip's status is 'ACTIVE', but when you click on it, there is no pricing information, or any option to buy it, or to send for a sample. these kind of chips have turned out to be particularly hard to find on the net, and are not stocked by any electronics stores that i know of on the high street. please if anyone has looked for any image sensors before with any success, point me in the right direction ??? (ideally, it would be good to get a sample of a handful of these devices, that are as close to my specs as possible, without having to buy them in multiples of 250+ at
  3. German diode translation?

    hi, the datasheet is a paper copy that came in the bag, and I have no scanner to show it to you, but to be honest that was the only thing i didnt understand. (it is just a list of what is included listing part numbers, type of diode, and voltage/wattage, not a detailed datasheet of an individual diode) I pretty much guessed what Z-diode stood for too. 3 types of diode included with this name: SPP100, SY625, SY400 i searched for SY400, and got a list of toilet roll holders! no luck with the other two either thanks for the help i couldnt find a decent translator online, that one seems quite good
  4. 9V ignition circuit

    lol handy for annoying siblings :o any indication what the values of C2-C9 (0.1uF?), and which diodes to use? thanks again
  5. hi, anyone speak German here? what is 'Gleichrichterdiode' I bought a multipack, of diodes and got a german datasheet. no online translators translate it, think it might be rectifier diode? thanks :)
  6. CCD's and CMOS image sensors

    EDIT: im probably going to use CCD to be honest, because they have higher sensitivity, higher quality images, lower-noise, and generally more pixels (not a really important factor for me, as long as it is above 2 megapixels) even though CMOS sensors, can consume about 100 times less power, and are cheaper too. (not really too sure about frames per second, but i think that CMOS is faster, because each pixel is individually read, rather than shifting the charge; agian not too important as long as it is above 30fps) so please can you recommend a CCD to use that fits my specs. thank you
  7. hi, dont know if this in the right forum: for a low end image sensor (between 2 to 3 megapixels) in a colour video application, can anyone recommend the best sensor to use (CCD or CMOS) when i say 'best', i need these specs: >smallest (dimensions, and weight) >2 to 3 megapixels >low noise, high sensitivity >colour filter >fastest possible fps rate (must be 30fps or more) >no image burn-in, or distortion, or delay. >lowest possible power consumption. please post if you have any ideas for the best chip for me to use, thanks.
  8. 9V ignition circuit

    hi thanks for the circuit, 'dazer'? is that a circuit for a stun gun? :P
  9. 9V ignition circuit

    hi, i was given this ignition circuit a while ago (by 'hotwaterwizard'), just want to know whether i can power this circuit with a 9V battery instead of 12V supply, and what i need to change to do so. thank you
  10. I dont know the exact scematic, but you could start by looking into magnetoresistive elements. i think there is a circuit using four of these elements in a wheatstone bridge and a differential amplifier... apparently :)
  11. ignition circuit

    ok, thanks alot :)
  12. ignition circuit

    can i use, Ic=hfe x Ib for each transistor?
  13. ignition circuit

    hi, my mistake, i thought that the two transistors were called a darlington pair. so what would the current output be of these transistors? thanks
  14. hi, platinum is the best material to use for the electrode as its an inert metal, but obviously, this is too expensive for a homemade plant. as long as this black 'stuff' is not reacting due to the electrolysis, and causing too much unwanted, impure gas to be formed along with the hydrogen then its probably good to use if its giving you a good amount of bubbles. what diodes did you use?, monoman:)
  15. ignition circuit

    hi thanks for the suggestion :), will i be able to eliminate the darlington pair altogether, and drive the ignition coil straight from the 555, or is it absolutely necessary? thanks