Crystal oven

About: Crystal oven is a research topic. Over the lifetime, 955 publications have been published within this topic receiving 10380 citations. The topic is also known as: oven-controlled crystal oscillator & OCXO.

Kyropoulos method sapphire crystal oven capable of being remotely observed

Abstract: The utility model discloses a kyropoulos method sapphire crystal oven capable of being remotely observed. A controller capable of carrying out centralized control, a seed crystal rotating system capable of driving a seed crystal rod to rotate, a seed crystal lifting system capable of driving the seed crystal rod to vertically move, a weighing system for measuring the weight of a crystal, a temperature measuring system for measuring temperature of cooling water, a vacuum system for achieving the vacuum environment of long crystals, a heating system for achieving the high-temperature environment, a display interface for parameter and information display and a sleeve arranged on an oven cover of the sapphire crystal oven are arranged. A camera system is arranged in the sleeve, a sealing part is arranged at the lower end of the sleeve, and comprises plane quartz glass and a rubber ring, and the camera system is connected with the controller. According to the scheme, the growth condition of the sapphire crystal can be more conveniently observed, and therefore the success rate of crystal introducing is improved.

PSPICE simulation of quartz crystal oscillation circuit based on CMOS inverter

Abstract: Quartz crystal oscillator is very commonly used in electronic devicesIn the circuit design and the teaching,the simulation analysis of quartz crystal oscillator circuit is often neededA method of using the PSpice simulation software to simulate quartz crystal oscillation circuit is introduced by instanceAccording to the equivalent circuit of quartz crystal oscillator,the series and parallel resonant frequency of quartz crystal was analyzed,quartz crystal simulation model was,the vibration waveform and amplitude waveform were observed,and its oscillation frequency in the emulator was testedBased on the of different element parameters,sweeping analysis of the oscillator was conducted

The research and realization of the GPS module tame the local VCXO

Abstract: In the design of time calibrator, time calibrator can be achieved on a higher stability, because of the highest stability of constant-temperature crystal oscillator highest stability, but as time goes on, the stability and the frequency stability of constant-temperature crystal oscillator will gradually decline, it will affect the measurement accuracy. In light of the above issues, we purpose a new method to obtain higher stability for it long time work. First, generate the frequency signal by voltage-controlled constant-temperature crystal oscillator; Second, get the signal 1S from the time GPS module; Third, comparison the above tow signals, thus, a error signal is generated; Finally, converter the error signal by digital-to-analog module, and then, use it to control the voltage-controlled constant-temperature crystal oscillator to achieve the purpose of automatic tame.

Transistor crystal oscillator operable at a subharmonic frequency of the crystal

Abstract: A transistor oscillator has a piezoelectric crystal vibrator incorporated therein for the stabilization of the oscillation frequency and for producing an oscillator which may oscillate with a subharmonic of said crystal vibrator and with a middle wave range frequency.