How to use negative feedback to regulate output power from a laser diode using a simple, single op-amp based circuit ...

you can deal with nearly all op amp circuits if you remember two simple rules: The inputs of the op amp don’t connect to anything internally. The output mysteriously will do what it can to make ...

I did learn a lot about op amp circuits and control systems, though, which are still valuable today. Infinite gain (A v) and infinite bandwidth Zero output impedance Infinite input impedance (zero ...

By using op amps powered from a bipolar supply and ground-referencing the sensor signals, the op amp’s output will be at zero ...

and a class-A output stage formed by Q5 through Q7. The differential amplifier circuit (also sometimes referred to as a long tailed pair) here formed by Q2 and Q3 is the signature of an op-amp ...

Classical analysis derives the non-inverting formula using circuit assumptions. If the op-amp gain is large, both op-amp inputs must have the same voltage to create a finite output voltage.

which is evident in an op-amp inverting circuit (Fig. 2). An inverting op amp features an output voltage that changes in the opposite direction as the input voltage. 2. The basic design of an op ...

Analog Devices has created a fast power op-amp that can handle ±55V rails and ±1A outputs, with a digital control bus for ...

All is working beautifully (although output resistance is 1k, so buffering mught be required downstream, and none of the circuits in this blog get over that limitation). However, because it is a ...