Accession Number : ADD011141

Title :   Variable Gain Oven Temperature Control Circuit.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Frerking,M E

Report Date : 15 May 1984

Pagination or Media Count : 5

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. (Author)

Descriptors :   *Patents, *Crystal ovens, *Control systems, *Temperature control, Thermal stability, Electric heaters, Frequency stabilizers, Gain

Subject Categories : Electrical and Electronic Equipment
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE