How Does a Voltage Stabilizer Work?

http://en.wikipedia.org/wiki/Zener_diode

http://en.wikipedia.org/wiki/Voltage_regulator

There are 32 voltage stabilisers listed in the RS Components on-line catalogue <usual disclaimer>. That makes 32 product data sheets just ripe for reading.

Which is the best type for domestic voltage fluctuation?.

Voltage stabilizer is a term used mostly for mains voltage regulation and the term voltage regulator in electronics mostly goes for DC.

There r mainly three types of voltage stabilizers.

1. Relay type that compares the incoming voltage and switches relays to buck or boost the voltage. This is done by selecting the taps on the transformer contained in the unit. The output voltage can be maintained within a range of 200-240 approx. and the input range can be from 170 to 260 volts... depends on design.

2. Servo type... This one has an additional auto transfomer and the electronics drives the motor coupled to the sliding contact to correct the output voltage. These can stabilise the voltage better than the relay type and the output will resolve around the resolution of the auto transformer.

3. Thyristor controlled maintains output by controlling trigger of the thyristor.

There is one more type that stabilises voltage by core design. Don't remember what it is called.

Gajanan Phadte

http://en.wikipedia.org/wiki/Voltage_regulator#Constant-voltage_transformer

Sounds like a homework question.

The most of the voltage stabilizer works by the use a reference voltage (usually zener diode device ).and voltage feed back loop .