Nice tutorial, easy looking schematics and well explained. BUT, i did of course try this out, 'been looking this kind solution/s for some time. mine version of that first one which has 2 push-buttons, doesn't latch. it turns on right away, and turns off only the time i hold the off button. i've checked wirings many times, i'm confused what's the problem
. i dont know is it because of incorrect components but here's the list if anyone could lend a hand:...
and sorry if this is NOT the place for asking help :S.
not even SCR equilavent circuit worked, tired that too, same symptoms.
ps: its not the end of the world, but i found couple other latching circuits which i succeeded to get working
supply voltage is 12v
transistors: bc547 / bc557
resistors: both 1k, tried 10k and 100k
load was LED with 1k resistor