operatsioonvõimendid
Operatsioonvõimendid, often abbreviated as op-amps, are fundamental building blocks in analog electronic circuits. They are high-gain, direct-coupled, differential voltage amplifiers with a single-ended output. The core characteristic of an op-amp is its ability to amplify the difference between two input voltages. It has two input terminals: a non-inverting input (usually denoted by '+') and an inverting input (usually denoted by '-'). The output voltage is proportional to the difference between the voltages at these two inputs, multiplied by the op-amp's very high open-loop gain.
Ideal op-amps possess infinite open-loop gain, infinite input impedance, and zero output impedance. In practice, real