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 Study Rooms 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 Electric Furnace Machine - Wimshurst Generator, Electric Furnace Machine - Wimshurst Generator Electrification Of Different Bodies, Interaction Of Electrified Bodies, Two Kinds Of Electric Charges, Demonstration Of The Work Of Electrostatic Generators, Etc. The Machine Must Consist Of Two Coaxial Discs Of Insulating Material, On Which Plotted Sectors That Should 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 Must Not Be Worse: - The Device In The Assembly - 1 Piece; - The Maximum Length Of The Spark Between The Arresters - No More Than 50 Mm; - The Electric Capacity Of Each Capacitor - Not Less Than 500 Pf; - Diameter Discs - Not Less Than 250Mm; - Thickness Of Discs - Not Less Than 3Mm. (Source Of Procurement Financing - Funds From Local And State Budgets)., 31120000-3 Van De Graaf Electrostatic Generator. The Van De Graaf Electric Generator Is A High Voltage Source And Is Intended For Conducting Demonstration Experiments On Electrostatics And For Demonstrating A Spark Gas Discharge In The Air. Complete Set: - Generator - 1Pc; - Diameter Of The Large Ball Not Less Than 250Mm; - Diameter Of The Small Ball Not Less Than 60Mm; - Supply Voltage 220V, 50Hz; - Consumed Power 20W; - Power Cord Length 1.2M; - Sphere Radius 125Mm; - Electrical Capacity Spheres 12Pf; - Sphere Charging Current 2Mka; - Sphere Charging Voltage Polarity Positive; - Sphere Voltage Not Less Than 120 Kv. The Metal Conductive Pulley Is Located In The Lower Part Of The Core-Pusu-Stand Of The Generator, And The Dielectric Pulley Is 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 Procurement Financing - Funds From Local And State Budgets).