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Voltage regulator JA212A11
General information
Connection diagram
Dimensional drawing


General information:

The voltage regulator JA212A11 is purposed for voltage maintenance of the onboard vehicle network in predetermined limits in all system operation modes of electrical equipment at change of the rotation frequence of the alternator rotor, electrical load and environment temperature.

Applicability: automobiles VAZ-2108, -09, -10 (with carburetor), VAZ-21213, “Oka” with the alternator 37.3701 or its modifications.

As an output switch is used a modern powerful field-effect transistor owing to that the losses of power given off in the form of heat have been sharply lowered, the load and current high-speed characteristics of the item have been improved and the regulator reliability has been enlarged.

The regulator is produced in a single climatic design О2.1 in accordance with GOST 15150 for internal market and for export. On extent of protection against penetration of foreign bodies and water, the item meets design IP68 in accordance with GOST 14254. An operating mode of the regulator is S1 in accordance with GOST 3940.

The regulators are mounted in the alternators, where the setting of regulators JA212A11 with the help of standard screws is stipulated.

The warranty period of exploitation is 3 years from the date of commissioning or from the date of sale in retail commercial network. The warranty obligations of the manufacturer are valid during 4 years from the date of the item production. The date of production is marked on the item housing.




Range of operating temperatures, °С
-40 .. +100
  Nominal regulating voltage, V
  Regulating voltage with battery at t°=(25 ± 2) °С and load of alternator 3А, V
14,1 ± 0,15
  Regulating voltage with battery at t°=(25 ± 2) °С in range of alternator load from 3A to Imax*, V
14,1 ± 0,2
  Maximum current of output circuit, А
  Thermal compensation of regulating voltage, mV/°С
-4,5 ± 1,5
  Residual voltage on output "DF", not more, V
  Maximum allowable long-term influence of increased supply voltage, V
  Maximum allowable influence of increased supply voltage up to 5 min., V
  Maximum allowable pulse overvoltages in accordance with GOST 28751, V
* - According to the technical conditions on the item  


Connection diagram:

Connection diagram of the voltage regulator JA212A11


Dimensional drawing:

Dimensional drawing of the voltage regulator JA212A11
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