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Vintage threads from the first ten years
LDR emulation (LED and photocell)
 6/18/1999 3:29 AM |
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Terry | LDR emulation (LED and photocell) I am making a dod envelope filter 440 and i cannot get a hold of LDR's so i am going to emulate one with an LED and 2 photocells wrapped in tape... Since the schematic shows that there is a +/- for the led/ldr how do i know which end is which? Also how would i hookup these up? one photocell,LED,one photocell in series? THANX |
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| R.G. Hello, Terry, and welcome back. |