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Very nice article! The technique of using an op amp with capacitor as an integrator is also a key component of analog computers. By hooking up a few integrators
by kens 6y ago
Very nice article! The technique of using an op amp with capacitor as an integrator is also a key component of analog computers. By hooking up a few integrators, an analog computer can quickly solve differential equations (in the 1960s, much faster than a digital computer could).
- jeffwass 6y agoThis is also why op-amps are named that - Operational Amplifiers, they can do many mathematical operations. My college electronics prof was old-school enough who told us back in his day it was “standard practice” to use pp-amps to solve differential equations from their Calc class.
- hazeii 6y agoPrior to moving to PDP-11's and paper-tape, the special-effects company I worked for many years ago used analogue computers stuffed with op-amps to control the motion of camera rigs - i.e. analogue motion control. I never saw one in operation, but apparently a cardinal sin was opening the door when the system was in operation (the temperature change would cause enough error to ruin the shot).
- type0 6y agoThis is the best article on DCO that I ever seen, so many thanks to the author. Often digital oscillators are unfairly misrepresented and it's difficult to find a fair comparison on the fundamentals of it.