Portable voltage regulator

Voltage Regulator A voltage regulator in the regulated power supply is essential for keeping a steady DC output voltage by supplying load regulation as well as line regulation. For this reason, we can employ regulators like a Zener, transistorized, otherwise 3-terminal integrated regulators.

If the design requires the use of voltage regulator, try to look for Low-Dropout regulators with low Quiescent Current. This will help the device to be on a much lower power consumption level when it is in sleep state. These types of details can be found on the datasheets of regulator manufacturers.

An automatic voltage regulator (AVR) is a electronic device for automatically maintaining generator output terminal voltage at a set value under varying load and operating temperature. It controls output by sensing the voltage V out at a power-generating coil and comparing it to a stable reference.

For example, here you can see a reverse engineered old Generac regulator that uses SCRs and UJT. Many modern machines often use a MOSFET instead of a bipolar transistors Q2-Q3 to lower switching losses. You just need to protect its gate with an additional zener.