George Giblet did a trace (and some guesswork on the cap values) on FSB a few years back. The cap values might not be 100% per original, but according to George, those should be at least close enough. There are a few ideas on this late 60’s circuit that are not present on every single FF/TB-clone out there, so i thought this migh be nice and fun little circuit to try out. Not sure if i built one back when this was drawn. Seems i can’t remenber everything that went on in 2019. Seems so long ago now.
However. This might be fun to build and to tweak to your liking. Note the transistor pinouts as those match 2SC828s. Parallel polarity protection is in place etc. I’m fairly certain you’ll get this sounding good with modern values for resistors as well.
