Crystal Growing Systems
Advanced Induction Power Systems for Crystal Growing
Ajax TOCCO Magnethermic has supplied hundreds of crystal growing systems, which continue to run reliably today with continuous and precise operation. Systems are typically designed for 50-100 kW at frequencies of 3-10 kHz.
- Precision Power Control Circuitry to Within 0.5%
- Coil Current Control
- UPS or AutoStart for Control Circuitry
- Coil Current Feedback
- Direct Digital Control by Computer, PLC, or Temperature Controller
- Specialized Output Configuration
- Line Monitor Circuitry
- Integral Heat Station
Reliable, Accurate Control for Crystal Growing
Crystal growers are used for heating gallium arsenide, synthetic rubies, and other crystalline materials in a zirconium or platinum crucible to temperatures of 950° and higher. The primary use of crystal growers is the pulling of gallium arsenide crystals for the laser and IC industries. A crystal grower is designed to have a very accurate control system to maintain a continuous temperature within plus or minus 3°C for a period of up to 6 weeks. Any variance greater than this is the difference between a good crystal and a bad one.