Difference between voltage stabilizer and transformer

We know that electricity can generate a magnetic field, and magnetic fields can also be converted into electricity. By applying alternating current to a coil, an alternating magnetic field is generated. Then, by passing this alternating magnetic field through another coil, a voltage is induced on the other coil. This is the principle of a transformer, and the amount of voltage transformation is related to the number of turns in these two coils; Simply put, transformers use the principle of magnetic coupling and are composed of primary and secondary windings (coils). The voltage at both ends of the coil is directly proportional to the number of turns in the coil, so the ratio of the number of turns in the primary and secondary coils determines the transformation ratio of this transformer. It is obvious that the transformer does not have a stabilizing effect because the secondary voltage changes with the primary voltage.　　

The regulator uses the negative feedback principle. For example, turn the tap water to half and install a sensor at the outlet of the tap water to detect the amount of water output. If the water output is large, it will automatically turn down the tap. If the water output is small, it will automatically turn up the tap, so as to keep the water output constant. The principle of the voltage regulator is roughly the same. In the voltage regulator, there is a circuit that can detect the change of the output voltage (the voltage dividing resistance sampling circuit at the inverse input of the error amplifier, which can now be reduced to only one integrated chip). When the output voltage changes, the circuit that detects the change of the output voltage is fed back to the private server motor by the chip, and then the private server motor drives the rotating arm to automatically adjust the position of the brush, So as to stabilize the output voltage, which is the simplest voltage regulator.　

In summary, transformers do not have a stabilizing effect, but using negative feedback technology can design transformers with a stabilizing effect, which is not a problem, but most transformers do not. The change in output voltage of a transformer within a certain range of use is not significant, and it is not the same concept as what we call voltage stabilization.

All voltage regulators use the same technology to achieve stable output voltage. The output voltage is sampled by a voltage divider connected to the inverting input of the error amplifier, and the in-phase input of the error amplifier is connected to a reference voltage. The error amplifier always tries to force its input at both ends to be equal. For this, it provides load current to ensure stable output voltage (i.e. negative feedback).