shunt regulator การใช้

Linear regulators exist in two basic forms : shunt regulators and series regulators.
If the stabilizer must provide more power, the shunt regulator output is only used to provide the standard voltage reference for the electronic device, known as the voltage stabilizer.
Linear regulators may place the regulating device in parallel with the load ( shunt regulator ) or may place the regulating device between the source and the regulated load ( a series regulator ).
Some cars have the mechanical equivalent of a shunt regulator to regulate the pressure so they pump more gas than they need and dump the excess back into the tank ( via a'return " line ).
This circuit has much better regulation than the simple shunt regulator, since the base current of the transistor forms a very light load on the Zener, thereby minimising variation in Zener voltage due to variation in the load.