Hello everyone on the forum,
I am trying to build an electronic circuit that can drive a bright array (size appr. 40 by 60 mm) of white LEDs from a photo diode. By that I mean that the LED array should be able to change its brightness according to the brightness induced to the photo diode. This should work with a maximum frequency of 2 MHz. The circuit should also include a potentiometer to gamma correct the signal.
I need this for a mechanical television system I am building, as described here: http://gebseng.com/11_big_paul/big_paul_brochure.pdf
Since this system (the spinning Nipkow Disk) blocks out 99.99 percent (sic!) of the available light, the photodiode needs to be very light sensitive, and the LED array needs to be very bright.
As you can probably tell from this writeup, I am not an electronic engineer myself, but I have decent soldering skills and a basic understanding of analog electronic parts.
If you could suggest a tutorial, or even better existing examples for similar circuits that I could modify for my purpose, this would be very helpful. I am not sure what the right terms for this kind of circuit are, but I guess it can't be too exotic.
best,
geb
I am trying to build an electronic circuit that can drive a bright array (size appr. 40 by 60 mm) of white LEDs from a photo diode. By that I mean that the LED array should be able to change its brightness according to the brightness induced to the photo diode. This should work with a maximum frequency of 2 MHz. The circuit should also include a potentiometer to gamma correct the signal.
I need this for a mechanical television system I am building, as described here: http://gebseng.com/11_big_paul/big_paul_brochure.pdf
Since this system (the spinning Nipkow Disk) blocks out 99.99 percent (sic!) of the available light, the photodiode needs to be very light sensitive, and the LED array needs to be very bright.
As you can probably tell from this writeup, I am not an electronic engineer myself, but I have decent soldering skills and a basic understanding of analog electronic parts.
If you could suggest a tutorial, or even better existing examples for similar circuits that I could modify for my purpose, this would be very helpful. I am not sure what the right terms for this kind of circuit are, but I guess it can't be too exotic.
best,
geb
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