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A fine nickel-chromium alloy wire is spiraled onto a center core of fiberglass, producing a strong, flexible heating element. Electronically-controlled precision winding equipment ensures consistency. Circuits are then hand-wound on permanent tooling, providing repeatability of resistance and pattern. Parallel circuits are utilized where possible, permitting continued operation should a single circuit be damaged.
Wire wound advantages over etched foil element:
- Faster turnaround time on prototype designs
- Lower engineering cost
- More economical pricing at lower quantities