Hello everyone , i,m a newbie here.
Getting back into electronics after many years away from it .
I have just built a single transistor sine wave phase shift oscillator and have the trace on the scope . The scope is a cheap single channel job from the UK circa 1970s a Gould OS 140.
On the front panel there are two 4mm sockets marked Gnd and the other Ext trig / X, next to that is a small insulated pin marked Gate o/p I have no manual on the instrument . However i want to stabilize the sine trace so i need to trigger it with a square wave , right ?.
I,m not sure how to, do i plug the gate o/p into the trig socket or make up a 555 square wave generator say 1khz and put that into the ext/ trig socket , i,m a bit lost here . Can someone clarify please.
Thanks