Van de Graaff Generator – Motor Driven 400 kV

The Van de Graaff Generator – Motor Driven 400 kV is a high-performance electrostatic generator designed for experiments requiring a strong and continuously generated electrostatic potential. Its motorized operation provides consistent charge generation and eliminates the need for manual belt movement.

Micro Technologies supplies the apparatus with a large metal dome approximately 250 mm in diameter. The large conductive surface allows electrostatic charge to accumulate effectively, creating a very high electrical potential.

The generator is capable of developing a static potential of up to approximately 400 kV under suitable operating conditions. This makes it particularly effective for demonstrations involving high-voltage electrostatics, electrical discharge, charge accumulation, and electric fields.

A 125 mm diameter discharge sphere is supplied with the apparatus. The sphere can be positioned near the charged dome to investigate spark formation and electrical breakdown through air.

Under typical suitable conditions, the apparatus can generate sparks of approximately 5 inches. When atmospheric and experimental conditions are particularly favorable, spark lengths of approximately 10 inches or more may be possible.

The actual spark length depends strongly on factors such as relative humidity, atmospheric conditions, surface cleanliness, grounding, discharge-gap geometry, and operating conditions. Dry conditions generally support longer and more consistent electrostatic discharges.

The motor-driven mechanism continuously operates the internal charge-transfer system, allowing electrostatic charge to accumulate on the dome. This provides convenient and repeatable operation for extended demonstrations.

The apparatus can support a broad range of experiments involving static electricity, electrostatic attraction and repulsion, electric fields, charge distribution, electrical discharge, electrostatic induction, and high-voltage phenomena.

Its combination of high potential, large dome, motorized operation, and substantial discharge sphere makes this model suitable where a more powerful electrostatic demonstration is required.

Features

• High-performance Van de Graaff Generator
• Motor-driven operation
• Continuous electrostatic charge generation
• Static potential up to approx. 400 kV
• Large 250 mm diameter metal dome
• 125 mm diameter discharge sphere
• Typical spark length approx. 5 inches
• Longer sparks possible under ideal conditions
• Demonstrates high-voltage electrostatic phenomena
• Suitable for electric-field investigations
• Demonstrates electrostatic discharge
• Supports charge accumulation experiments
• Convenient continuous operation
• Robust bench-top construction
• Designed for repeated demonstrations

Benefits

• Up to 400 kV provides powerful electrostatic demonstrations
• Motorized operation enables continuous charge generation
• Large dome supports substantial charge accumulation
• 125 mm discharge sphere provides clear spark demonstrations
• Highly visible discharge effects improve experimental observation
• Suitable for multiple electrostatic investigations
• Allows demonstrations of charge, field, attraction, repulsion, and discharge
• Continuous operation is convenient for repeated experiments

Product Specifications

Applications

• High-voltage electrostatic experiments
• Static electricity demonstrations
• Charge accumulation experiments
• Spark discharge demonstrations
• Electric-field investigations
• Electrostatic attraction experiments
• Electrostatic repulsion demonstrations
• Charge distribution experiments
• Electrostatic induction
• Air breakdown demonstrations
• High-potential investigations
• Conductors and insulators experiments

Available Variants

• MT-45092 – Motor Driven Van de Graaff Generator, up to 400 kV
• High-Voltage Van de Graaff Generator
• 250 mm Dome Electrostatic Generator
• Motorized Static Electricity Generator
• Customized configurations for bulk requirements

SKU System

• MT-VDG-400K – 400 kV Van de Graaff Generator
• MT-VDG-MD400 – Motor Driven 400 kV Configuration
• MT-VDG-250 – 250 mm Dome Configuration
• MT-VDG-125DS – 125 mm Discharge Sphere Configuration
• MT-VDG-CUS – Customized Configuration

FAQs

What is the maximum potential of this Van de Graaff Generator?

The generator can produce a very high static potential of up to approximately 400 kV under suitable operating conditions.

Is this Van de Graaff Generator motor driven?

Yes. It uses a motor-driven mechanism to provide continuous electrostatic charge generation.

What is the diameter of the metal dome?

The metal dome has an approximate diameter of 250 mm.

What is the size of the discharge sphere?

The discharge sphere has an approximate diameter of 125 mm.

What spark length can the generator produce?

A typical spark length is approximately 5 inches under suitable operating conditions.

Can it produce sparks longer than 5 inches?

Yes. Under ideal atmospheric and experimental conditions, spark lengths of approximately 10 inches or more may be possible.

What factors affect spark length?

Humidity, atmospheric conditions, dome cleanliness, grounding, discharge-gap geometry, operating conditions, and nearby conductive objects can influence the achievable spark length.

Why are dry conditions better for Van de Graaff Generator operation?

Higher humidity increases charge leakage through surrounding air and surfaces. Dry conditions generally allow electrostatic charge to accumulate more effectively.

Does the generator provide continuous charge?

Yes. Its motor-driven system continuously operates the charge-transfer mechanism while the generator is running.

Can it demonstrate electrostatic attraction and repulsion?

Yes. With suitable accessories, the generator can be used for demonstrations involving electrostatic attraction, repulsion, charge transfer, and related effects.

Can it be used for electric-field experiments?

Yes. The high potential generated by the apparatus makes it useful for a range of electric-field and electrostatic investigations.

What is the purpose of the discharge sphere?

The discharge sphere provides a controlled conductive surface for demonstrating electrical discharge and spark formation from the charged dome.

Can 400 kV Van de Graaff Generators be supplied in bulk?

Yes. Micro Technologies can supply Motor Driven Van de Graaff Generators for laboratories, universities, colleges, research facilities, scientific equipment distributors, institutional procurement, and bulk requirements.

Why Choose Our Products

• Up to approximately 400 kV static potential
• Continuous motor-driven operation
• Large 250 mm metal dome
• 125 mm discharge sphere
• Approx. 5-inch typical spark
• Longer spark capability under ideal conditions
• Suitable for multiple electrostatic demonstrations
• Robust and reusable construction
• Bulk supply available

Call to Action

Create powerful high-voltage electrostatic demonstrations with the 400 kV Motor Driven Van de Graaff Generator from Micro Technologies. Contact us for competitive quotations, bulk orders, distributor requirements, institutional procurement, customized configurations, and complete electrostatics laboratory equipment solutions.