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Crystal oscillator with thermostatic bath

A technology of crystal oscillators and constant temperature baths, applied in power oscillators, electrical components, output stabilization, etc., can solve problems such as frequency fluctuations, and achieve the effects of output frequency stabilization, heat dissipation suppression, and temperature control stability

Active Publication Date: 2016-11-09
NIHON DEMPA KOGYO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0030] As described above, the conventional crystal oscillator with a constant temperature bath has the problem that the outer side is covered with a metal cover with good thermal conductivity, and when mounted on the device, it is easy to be affected by the operation of the mounted device or Due to the influence of temperature changes caused by the environment, there may be frequency fluctuations caused by small current changes accompanying temperature control

Method used

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  • Crystal oscillator with thermostatic bath

Examples

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no. 1 example

[0071] A crystal oscillator with a constant temperature bath according to a first embodiment of the present invention will be described.

[0072] The crystal oscillator with constant temperature bath according to each configuration of the first embodiment is characterized in that it is equipped with a cover made of resin that is slightly larger than the metal cover that covers the oscillation circuit, the heater resistor, and the temperature control circuit. body.

[0073] As specific examples of the oven-equipped crystal oscillator of the first embodiment, the first to third oven-equipped crystal oscillators will be described.

[0074] [The first crystal oscillator with a constant temperature bath: figure 1 ]

[0075] As the crystal oscillator with constant temperature bath of the first embodiment of the present invention, using figure 1 The first crystal oscillator with a constant temperature bath will be described. figure 1 It is a sectional view showing the structur...

no. 2 example

[0113] Next, a crystal oscillator with a constant temperature bath according to a second embodiment of the present invention will be described.

[0114] The crystal oscillator with a constant temperature bath of the second embodiment is characterized in that a metal cover is provided on the outside of the resin cover covering the oscillation circuit and the like.

[0115] As specific examples of the crystal oscillator with a constant temperature bath of the second embodiment, the fourth to eighth crystal oscillators with a constant temperature bath will be described.

[0116] [Fourth crystal oscillator with constant temperature bath: Figure 4 ]

[0117] As the crystal oscillator with constant temperature bath of the second embodiment of the present invention, using Figure 4 The fourth crystal oscillator with constant temperature bath will be described. Figure 4 It is a cross-sectional view showing the configuration of the fourth crystal oscillator with a constant tempera...

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Abstract

PROBLEM TO BE SOLVED: To provide a crystal oscillator with a thermostatic bath capable of further stabilizing an output frequency by reducing thermal influence from the outside. SOLUTION: Disclosed is a crystal oscillator with a thermostatic bath in which a substrate 11 is fixed onto a base 16. This oscillator includes: an oscillation circuit 12 mounted on the substrate 11; a heater resistance 13; a power transistor 14; pins 15 for fixing the substrate 11 onto the base 16 with a predetermined interval; metallic cover 17 covering the oscillation circuit 12, the heater resistance 13, and the power transistor 14; and a resin-made cover 18 covering the outside of the metallic cover 17. An air layer is provided between the metallic cover 17 and the resin-made cover 18.

Description

technical field [0001] The invention relates to a crystal oscillator with a constant temperature bath, in particular to a crystal oscillator with a constant temperature bath, which can reduce the influence of external heat and make the output frequency more stable. Background technique [0002] [Description of Prior Art] [0003] A crystal oscillator with a constant temperature bath (OCXO; Oven Controlled Crystal Oscillator) has a constant temperature bath that keeps the crystal oscillator at a constant temperature, thereby having high frequency stability. [0004] Crystal oscillators with constant temperature baths are used in high-precision measuring devices and base stations for mobile phones. [0005] [Existing crystal oscillator with constant temperature bath: Figure 11 ] [0006] use Figure 11 A conventional crystal oscillator with a constant temperature bath will be described. Figure 11 It is a sectional view showing the configuration of a conventional crystal os...

Claims

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Application Information

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IPC IPC(8): H03B5/32
CPCH03L1/028H03B5/32H03L1/04
Inventor 新井淳一
Owner NIHON DEMPA KOGYO CO LTD
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