https://github.com/rhaido/200_transistor_circuits_united/blo...
Also he did a free book with fifty 555 circuits:
http://www.talkingelectronics.com/projects/50%20-%20555%20Ci...
And 100 IC circuits:
http://www.talkingelectronics.com/projects/100%20IC%20Circui...
https://github.com/rhaido/200_transistor_circuits_united/blo...
Also he did a free book with fifty 555 circuits:
http://www.talkingelectronics.com/projects/50%20-%20555%20Ci...
And 100 IC circuits:
http://www.talkingelectronics.com/projects/100%20IC%20Circui...