Tenders Are Invited For Dk 021:2015 31120000-3 — Generators ( 31120000-3 Electrophoretic Machine - Wimshurst Generator, 31120000-3 Van De Graaf Electrostatic Generator (Purchase For Classrooms Of Pilot Classes Of The National Academy Of Sciences In Accordance With The Resolution Of The Cmu Of September 19, 2023 No. 1023) ).

31120000-3 Electrophoretic Machine - Wimshurst Generator, Electrophoretic Machine - Wimshurst Generator Electrification Of Different Bodies, Interaction Of Electrified Bodies, Two Kinds Of Electric Charges, Demonstration Of The Operation Of Electrostatic Generators, Etc. The Machine Must Consist Of Two Coaxial Disks Of Insulating Material, On Which Sectors Are Applied, Which Must Have Conductive Properties. The Discs Must Be Rotated In A Linear Direction With The Same Angular Velocity. Two Lei-Denivsky Banks Must Be Used In The Construction. They Must Form A Single System Of Capacitors Connected In Series. Current Collectors Must Have A Spring Base. The Design Of The Device Must Be Fixed On A Strong Plastic Insulating Base. The Composition And General Characteristics Of The Device Should Not Be Worse: - The Device In The Assembly - 1 Piece; - Maximum Spark Length Between Arresters - No More Than 50Mm; - Electrical Capacity Of Each Capacitor - Not Less Than 500Pf; - Diameter Of Discs - Not Less Than 250Mm; - Disc Thickness - Not Less Than 3Mm. (Source Of Financing For The Purchase - Local And State Budget Funds)., 31120000-3 Van De Graaf Electrostatic Generator. The Van De Graaf Electric Generator Is A High Voltage Source And Is Designed For Conducting Demonstration Experiments In Electrostatics And For Demonstration Of Spark Gas Discharge In Air. Complete Set: - Generator - 1Pc; - The Diameter Of The Big Ball Is Not Less Than 250 Mm; - The Diameter Of The Small Ball Is Not Less Than 60 Mm; - Supply Voltage 220V, 50Hz; - Consumed Power 20W; - Power Cord Length 1.2M; - Sphere Radius 125Mm; - Sphere Capacitance 12Pf; - Sphere Charging Current 2Mka; - Sphere Charge Voltage Polarity Is Positive; - The Voltage In The Sphere Is Not Less Than 120 Kv. The Metal Current-Conducting Pulley Is Located In The Lower Part Of The Core-Pus-Post Of The Generator, And The Dielectric One Is Located On Top. A Rubber (Silk) Belt Is Stretched Between Them. Lower Pulley Has Ground. An Electrode Is Located Near It In The Form Of A Brush To Which Voltage Is Applied. Near The Upper Pulley - The Second Electrode Of The Brush, Which Is Connected To The Ball. Brushes Rub Against Dielectric Tape. (Source Of Purchase Financing - Funds From Local And State Budgets).