Variable gain oven temperature control circuit

Details Variable gain oven temperature control circuit Variable gain oven temperature control circuit

1983-02-09

1984-05-15

Reynolds, B. A.

Electric heating

Heating devices

Combined with diverse-type art device

219501, 219413, 219398, 219494, H05B 102

Patent

active

044490321

ABSTRACT:
The frequency of an electronic oscillator is controlled by a crystal located in the oven. The heaters in the oven include resistance elements for quick warm-up, and steady state. The circuit allows the quick warm-up power to be reduced incrementally as the set temperature is approached and effects a smooth transition to the steady-state heater. This is accomplished by circuit features which reduce the control loop gain when high power is applied to the heaters and increase the gain as the warm-up power decreases.

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patent: 3428784 (1969-02-01), Pinckaers
patent: 3548155 (1970-12-01), Rabindran
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patent: 4302663 (1981-11-01), Chesnut et al.
patent: 4305005 (1981-12-01), McKenney
patent: 4317985 (1982-03-01), Wilson
patent: 4333002 (1982-06-01), Kozak
patent: 4396892 (1983-08-01), Frerking

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