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The increased energy consumption in onboard network can lead to discharge of the accumulator even at the running engine. For maintenance of rated voltage in the generating network the three-level regulators allowing to reduce the current intensity and speed of discharging are used.
Three-level voltage controllers are assembly of the semiconductor elements changing tension on windings of excitation of the generator. At different loads of onboard current network the generator develops current with various characteristics. Voltage controllers are quite useful devices: at the low price they raise life cycle of the accumulator and interfere with emergence of the emergency situations connected with its discharging.
Design of the three-level regulator
Structurally the voltage controller consists of the body in which assembly of the radioelements collected on the printed circuit board or directly among themselves is placed. Voltage controllers happen two types: manual actuation and automatic. In manual voltage controllers there is change of volt ampere characteristics due to inclusion in chain of one or two consistently connected Schottky diodes by means of the toggle-switch. Automatic regulators have the built-in block of the varistors evaluating voltage level in onboard network. They turn on in chain Schottky diodes only at certain values of current intensity and tension.
Installation of the regulator
Three-level voltage controllers are very popular with owners of cars VAZ is more senior than the tenth generation. Such simple adaptation allows to increase overall performance of all onboard wiring significantly: lighting, oven, heating of back glass. Voltage controllers are most demanded in the winter when the car needs additional heating, and low temperature many times reduces accumulator capacity.
Before installation of the voltage controller it is necessary to disconnect the minus accumulator terminal and to remove protective cover from the generator, having turned off two bolts. The installed relay of inclusion of windings needs to be removed, and instead of it to establish contact unit of the regulator. At the same time through cover of the generator it will be required to stretch wire accurately. The block of the regulator it is necessary to fix on one of free pins with contact on weight, orienting it terminals down.
System of safe start
The most advanced models of voltage controllers have function of safe start. As current in windings of excitation of the generator makes from 5 amperes and above, at engine start such energy consumption leads to notable capacity shortage. The regulator has own semiconductor key which is disconnecting generator windings in the absence of stable voltage output.