View Single Post
Old 17th Jan 2019, 8:48 pm   #18
Restoration73
Nonode
 
Restoration73's Avatar
 
Join Date: Jun 2013
Location: Surbiton, SW London, UK.
Posts: 2,801
Default Re: Turntable Stroboscope

It will be unusual for any stock crystal to be unaffected by the circuit loading, so you can
replace one of the 22pF caps with a 66pF trimmer, and that will enable fine frequency
adjustment, when measured with a frequency meter. It also allows junk box crystals
to be pulled to the desired output.
Restoration73 is offline