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| Re: Track Detectors (872174) | |||
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Re: Track Detectors |
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Posted by SelkirkTMO on Sun Dec 13 22:02:49 2009, in response to Track Detectors, posted by Broadway Lion on Sun Dec 13 21:43:02 2009. You'll want to grab the optocoupler out of the rodent and mount it (you can even cut it across the slot for more width between emitter and detector) as required but there's a problem. The transistor photodetector will burn out with the amount of current required to drive a relay. Therefore you'll need an emitter follower to drive the relay. Here's yer schematic - left side is the optocoupler from the rodent, right side is the rest of the circuit. Good luck Jim and remember if any of your IMF force are caught or captured, subchat will disavow any knowledge of your mission. :)  "Sig in" for the photodiode can go through a 100 ohm or so resistor, values given on the left expect 5 volts or less. Change the 50 ohmer to 500 ohms and the "sig in " resistor to about 1K ohms for 12 volts in. VCC is the positive lead, all connected together. But this shuld be enough to give you the general idea ... |
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