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General query

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burhanmz

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What can i use instead of photo-transistor?


a high gain transistor with a IR -receiver (led) ? where the diode is reversed biased from collector to base of the transistor? if yes, then would there be any limitations?
 

Sceadwian

Banned
A photo-diode would be better than an LED used as a makeshift photodiode. You'd still have to amplify it though, I'd use an opamp rather than a transistor amp. CDS photocells can be used as well depending on exactly what you need this for. A little more detail would be nice.
 
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