"avr-8A voltage regulator of a sealed electronic devices, by adjusting the excitation current in order to stabilize the output voltage of the brushless generator."          
Technical specification          
Input       voltage Build-up:  araesidualvolts at AVR TEMINAL＞5VAC 
        Voltage       100~260VAC       external Volts Adjustment; ±7%with 1KQ   
              sotf start ramp time :2sec   
Output       unit power dissipation:MAX.8Watt   
        Voltage       Max 90VDC at 240VAC input       EMI Suppression:internal Elecronmagnetic Interference Filtering   
        Current        Continuous 3A       Thermal.Drift:0.03$per`C   charge in AVR ambient
                           Intermittent 5A for 10 secs       uUnder Frequency Protection:60HZ system presets knee point at 55hz   
       Resistance    15 ohms minimum          
       Regulation <+/- 1.0% (with 4% engine governing)        Factory Settings:50HZ system presets knee point at 45HZ   

3.We mainly supply the following  AVR:          
General AVR Series Replacement:
GAVR-15A GAVR-12A GAVR-8A

Stamford Series AVR Replacement:
SX440 AS440 SX460 MX321 MX341

Leroy somer Series Replacement:
R448 R449 R230 R438