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Product

Product name：FB807A FB807A 1 type photoelectric effect measuring instrument

Product Details

The instrument consists of photoelectric detection device and tester
Main features
☆A(yù)dopts disc adjustment optical filter and diaphragm.
☆Tester has good stability and reliability.
Common FB807A: working voltage of phototube: -2V~0V, -1V~+50V;
Modified FB807A/1: working voltage of phototube: -4.5V~+2.5V, -4.5V~+30V;
Test methods: intersection method, inflexion-point method, and volt-ampere characteristic method. 

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