Features
This instrument is used to reveal some laws of photoelectric effect, such as the limit frequency of metal (red limit); fast response of photoelectric effect; the relationship between saturation current and the intensity of incidence light; how to determine the stopping potential; and the relationship between photoelectron’s frequency and energy.

Characterized by compact structure, rational distribution, stable performance and convenient maintenance, the instrument is special designed for student’s group experiment.

Specification
--4 Digits LED Indicator
--Sensitive component: Vacuum Phototube
--Wave length of color filter: 850nm、635nm、540nm、460nm
--Precision of accelerate voltage: less than ±2%
--Current measuring range: 10-6A～10-9A divided into 4 levels
--Light source: 12V/20W incandescent lamp
--Power supply: 220±22V 50±l Hz
--Product size: (L×W×H) 500*150*235mm