You can learn from our mistakes.
Voltage Follower
The Basics
The voltage follower, like the comparator, requires no components other than the op-amp itself. The voltage follower is typically used as a buffer; whatever circuit is connected to the output will have essentially no effect on the circuit attached to the input. Either of the inputs is connected directly to the output. The [...]
Comparator
The Basics
The comparator, unlike the previous amplifiers I’ve covered, requires no components other than the op-amp itself. The inverting and non-inverting inputs are used to compare two voltages. The higher of the two inputs will drive the output to the corresponding supply rail. For example, if the voltage applied to the non-inverting input is higher [...]
If you’ve studied the history of electricity at all, you have certainly heard of The War of the Currents. Edison wanted DC current for power distribution, Tesla wanted AC current. After quite the dirty little fight, Tesla came out on top with his AC current. But why? Despite all the arguments and under handed tactics [...]
I’ll put up a text version when time permits.