Apheared
You call that an amp? THIS is an amp!
- Joined
- Jun 20, 2001
- Posts
- 377
- Likes
- 10
Hey,
This is part of a thread that existed at my other home, but now... anyway...
Imagine a 555 timer that controlled an electric chair that you personally sat in. No, that's not the application but I need it to be on your mind.
This 555 timer sometimes triggers on power up, sometimes on power off. It's running off a power supply that's well regulated (<1mV ripple) and locally bypassed; it behaves like it should, except for this annoying habit of triggering when power is applied/removed, and only sometimes.
For some applications this is just annoying, but what do do if it's something that can kill someone or destroy multi-thousand dollar equipment?
Where do you learn the skills and techniques to build devices that will never trigger when they aren't supposed to? I'm talking like medical equipment certification techniques... imagine if a implanted defibrillator just started shocking the crap outta you constantly because of a failure? That kind of assuredness.
Help?
This is part of a thread that existed at my other home, but now... anyway...
Imagine a 555 timer that controlled an electric chair that you personally sat in. No, that's not the application but I need it to be on your mind.
This 555 timer sometimes triggers on power up, sometimes on power off. It's running off a power supply that's well regulated (<1mV ripple) and locally bypassed; it behaves like it should, except for this annoying habit of triggering when power is applied/removed, and only sometimes.
For some applications this is just annoying, but what do do if it's something that can kill someone or destroy multi-thousand dollar equipment?
Where do you learn the skills and techniques to build devices that will never trigger when they aren't supposed to? I'm talking like medical equipment certification techniques... imagine if a implanted defibrillator just started shocking the crap outta you constantly because of a failure? That kind of assuredness.
Help?