Semiconductor electromagnetic radiation isolated thermocouple
Abstract
Abstract To measure the intensity of an electromagnetic field a thermocouple is connected to a meter and placed adjacent a small resistance in a line carrying current induced by the electromagnetic field. This current produces heat in the resistor which is sensed and converted into a DC voltage by the thermocouple. This DC voltage causes the meter to indicate the intensity of the electromagnetic field. To prevent error due to electromagnetically coupled energy heating the thermocouple and/or producing a high frequency current which is conducted to the meter circuit from interfering with the meter readings, a physically small thermocouple with semiconductor leads or a semiconductor thermocouple having semiconductor leads is provided.
Inventors
- 👤 Richard T Ford
Bibliographic Details
Claims Analysis
Total Claims: 4References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |