Title:
CONSTANT TEMPERATURE CONTROL CRYSTAL OSCILLATOR
Document Type and Number:
Japanese Patent JP3105623
Kind Code:
B2
Abstract:
PURPOSE: To enhance the stability of an oscillating frequency against a change in an external temperature of a thermostatic oven for an OCXO oscillator, to decrease the start-up time, to make the size small and to reduce the power consumption.
CONSTITUTION: A case 3 containing a crystal vibrator and an oscillator circuit or the like, a base 2 forming a casing integrating printed circuit boards 4,5 or the like and a cover 1 are made of a metal and the air-tight structure is adopted for the inside. A thin thermal insulation member 13 is adhered to an outer wall of the casing partially and distributingly, and an equivalent thermal transfer resistor of the casing is adjusted by the thin thermal insulation material 13 to reduce a heat capacity thereby making the size small and power consumption is reduced by a heater winding wire 31.
Inventors:
Haruo
Nobuyuki Kanazawa
Nobuyuki Kanazawa
Application Number:
JP7305192A
Publication Date:
November 06, 2000
Filing Date:
February 26, 1992
Export Citation:
Assignee:
Nippon Denpa Industry Co., Ltd.
NC Wireless Networks Co., Ltd.
NC Wireless Networks Co., Ltd.
International Classes:
H03B5/32; H03H9/02; (IPC1-7): H03B5/32; H03H9/02
Domestic Patent References:
| JP6216642A | ||||
| JP57155810U | ||||
| JP6340014U | ||||
| JP63191714U | ||||
| JP1195706U |
Attorney, Agent or Firm:
Suzuki Akio