Another 741 Op Amp Test Circuit

From GC Loveday; Electronic Testing and Fault Diagnosis, p67.

I changed the 0.1uF for a 2.2uF for a slower flash rate, and the 680R for a 310R for a brighter LED. I had a 100nF not a 10nF also.

Compare with the last one in prior Post:

opamp tester circuit diagram