Operational amplifier circuit working principle

zw5128

Operational amplifier circuit working principle [Copy link]

 

Could someone please tell me how this op amp works?

maychang

I don't know where the input signal comes from, where the output signal goes, the power supply configuration, what instrument is used to measure the 0.16V in the figure, whether it is the peak value, effective value or average value. It is also difficult to understand the working principle of the op amp circuit.

maychang

Judging from the two diodes connected to the output of the op amp, it may be a precision rectifier circuit, but I cannot be sure.

hk6108

How does this op amp work?!

What is the internal circuit of the op amp like? !

hk6108

The principle is the mechanism behind the phenomenon that is needed to achieve a certain function.

An operational amplifier is a type of integrated circuit. Amplification is the only function of an operational amplifier (op amps are no longer considered computing units).

The operational amplifier plus its peripheral components make up a variety of circuits. How each component in the circuit interacts with each other to achieve a certain function is the principle of a certain device or circuit.

zw5128

The op amp model is lt1014d

zw5128

This part is the voltage and current sampling control part of the high-voltage switching power supply

zw5128

U6-9 is directly transmitted to the compensation pin of UC3525AD, thereby controlling the pulse width output

zw5128

The above measured data is the data measured by a multimeter when the power is turned on and the output high voltage is 800 volts.

zw5128

I also say

freebsder

By inferring the mathematical model from the physical model, it is easy to understand the principle of the operational amplifier in the circuit. I remember that the book "Operational Amplifier Circuit Design" has the derivation of these steps. Look at it from the local system, not from a single device.

hk6108

Today's op amps seem to be designed only for negative feedback linear amplification, and can also serve as comparators. The calculation function has been handed over to the logic module.