UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

TonyDuell · 19th Mar 2019, 6:43 pm

I did not try to measure the persistance of the white LEDs I used in my strobe project. What I do know is that with the circuit I gave I get a _very_ clear stationary pattern on the strobe markings of the spindle of an old floppy disk drive (which is what I originally made it for). Even if the persistance of the LED keeps it on for longer than 1/16th of the time it still goes off for sufficiently long to work.

19th Mar 2019, 6:43 pm	#53
TonyDuell Dekatron Join Date: Jun 2015 Location: Biggin Hill, London, UK. Posts: 5,208	Re: Turntable Stroboscope I did not try to measure the persistance of the white LEDs I used in my strobe project. What I do know is that with the circuit I gave I get a _very_ clear stationary pattern on the strobe markings of the spindle of an old floppy disk drive (which is what I originally made it for). Even if the persistance of the LED keeps it on for longer than 1/16th of the time it still goes off for sufficiently long to work.