Title

Improved Formulations for Ceramic Varistor Devices: Electrical Results

School Name

South Carolina Governor's School for Science & Mathematics

Grade Level

12th Grade

Presentation Topic

Engineering

Presentation Type

Mentored

Abstract

A varistor is an electrical component commonly used in surge protection. Varistors are placed in parallel and have a high resistance until a power surge causes the resistance to drop, allowing current to flow through the varistor. The objective of this research was to create a cost-effective varistor that had better degradation properties than the current industry standard. This would be achieved by mixing Compound X, a compound commonly used for its cost-effectiveness and the more expensive Compound Y. Compound Y is known for its preservation of degradation properties after testing. Although the research was conducted in an industrial setting, the processes were catered towards small scale production. One test we used is best understood with the creation of a graph that displayed current versus voltage across the varistor. This graph shows resistance values and degradation properties for various currents. After analyzing data, it was concluded that the incorporation of Compound Y improved performance of varistors.

Location

Johns Hall 109

Start Date

3-28-2020 9:00 AM

Presentation Format

Oral Only

Group Project

No

COinS
 
Mar 28th, 9:00 AM

Improved Formulations for Ceramic Varistor Devices: Electrical Results

Johns Hall 109

A varistor is an electrical component commonly used in surge protection. Varistors are placed in parallel and have a high resistance until a power surge causes the resistance to drop, allowing current to flow through the varistor. The objective of this research was to create a cost-effective varistor that had better degradation properties than the current industry standard. This would be achieved by mixing Compound X, a compound commonly used for its cost-effectiveness and the more expensive Compound Y. Compound Y is known for its preservation of degradation properties after testing. Although the research was conducted in an industrial setting, the processes were catered towards small scale production. One test we used is best understood with the creation of a graph that displayed current versus voltage across the varistor. This graph shows resistance values and degradation properties for various currents. After analyzing data, it was concluded that the incorporation of Compound Y improved performance of varistors.