You also have the option of simulating the behavior of devices like op amps, comparators etc. etc. in software. A download of Ltspice is free. There is a bit of a learning curve but there are good introductory videos (Sparkfun etc.).
You also have the option of simulating the behavior of devices like op amps, comparators etc. etc. in software. A download of Ltspice is free. There is a bit of a learning curve but there are good introductory videos (Sparkfun etc.).