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

DonaldStott · 31st Mar 2019, 5:40 pm

So now that I have what looks to me like a symmetric square wave displaying on my oscilloscope, what circuitry do I need to add to convert that to an asymmetric square wave?

"The LEDs are on for 1/16th of the time. A short flash (rather than 50:50 on/off ratio) gives a clearer 'still' pattern of the strobe disk".

Really enjoying the educational aspects of this Thread - thanks to everyone for their ongoing support.

31st Mar 2019, 5:40 pm	#55
DonaldStott Octode Join Date: Aug 2015 Location: Glasgow, UK. Posts: 1,848	Re: Turntable Stroboscope So now that I have what looks to me like a symmetric square wave displaying on my oscilloscope, what circuitry do I need to add to convert that to an asymmetric square wave? "The LEDs are on for 1/16th of the time. A short flash (rather than 50:50 on/off ratio) gives a clearer 'still' pattern of the strobe disk". Really enjoying the educational aspects of this Thread - thanks to everyone for their ongoing support. __________________ BVWS Member