| 摘要 |
An electrical resistance ignitor formed of nickel alloy wire wound continuously into two open coils nested one within the other. A tubular shield is disposed over the outer of the two coils in closely spaced arrangement. An insulating disk closes one end of the shield and supports the coils and end leads for external connection. Axially extending spacer strips maintain the coils concentrically radially spaced. The ignitor is particularly suitable for series connection with a heat motor in a gas line valve to the burner.
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