Photoelectric Effect Apparatus

 

A Complete Tool for Photoelectric Device Studies

The LM07-B Photoelectric Effect Apparatus is designed for experiments with photovoltaic cells and photosensitive devices. It includes a photovoltaic cell with a voltage range of 0 to 0.5V. An external DC voltage from 0 to 10V is adjustable. A variable resistor from 0 to 10kΩ is also provided. A galvanometer measures current from 0 to 2000μA. This apparatus uses lens imaging and Malus's law for polarization to set light intensity with high accuracy. Two polarizers are included. Each is mounted on a rotating dial with 1-degree divisions. Two imaging lenses are supplied, each with a focal length of 100mm. The product supports all experiments under both bright and dark conditions. This makes it very flexible for teaching.

The photoelectric receiver is a high-speed silicon photovoltaic cell. Its sensitive area is 10mm × 10mm. The spectral range is 0.3 to 0.9μm. A 3.5-digit digital current meter shows readings with a minimum resolution of 1nA. The gain is adjustable. The apparatus comes with a 0.8-meter optical bench. A polarizer reduces light, and an LED white light source is used. The LM07-B Photoelectric Effect Apparatus allows students to perform many key experiments. You can study the volt-ampere characteristics of a photoresistor under different light levels. You can measure the open circuit voltage of the photovoltaic cell, the fill factor, and the relationship between power and load resistance. You can also analyze the volt-ampere characteristics of the photovoltaic cell under varying illumination levels and in dark conditions. In addition, the apparatus lets you study the volt-ampere characteristics of a photodiode under different light levels.

All components are mounted on the optical bench. This makes adjustments simple and clear. The LM07-B Photoelectric Effect Apparatus is suitable for undergraduate physics labs and electronics courses. It helps students understand how light intensity affects the electrical properties of different photoelectric devices. The combination of a high-resolution current meter and adjustable light intensity gives accurate and repeatable results. Students can directly observe the relationship between illumination and current or voltage. This hands-on experience is very valuable for learning optoelectronics.

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