AX7PBF1-50.0000C

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Oscillators are widely used in electronics to generate electrical signals at a particular frequency. Among them, the AX7PBF1-50.0000C oscillator is a temperature-compensated crystal oscillator with excellent features.This oscillator is composed of metal quartz crystals, capacitors and temperature-compensated transistors. It has a wide range of applications such as communication, computer, communication control, radar, navigation and military fields.In terms of its working principle, the AX7PBF1-50.0000C oscillator works according to the resonance phenomenon of clear quartz crystal, transforming resonance into electrical signal oscillation. The crystal is connected in parallel between the positive and negative pins of the oscillator, and the cathode of the transistor is connected to the positive pin of the crystal. The emitter is connected to the negative pin of the crystal through a capacitor, and the collector is connected to the non-inverting end of the external signal amplifier.The oscillator circuit is designed to make use of the piezoelectric effect of quartz crystal. An external signal is applied to the collector of the transistor, and the transistor is biased to a certain cutoff. When the external signal exceeds the certain cut off point, the transistor will pass into the saturation region and then quickly return to normal; while, when the external signal is lower than the cutter point, the transistor will be cut off, and the positive plate and negative plate of the oscillator will be cut off at the same time, causing the energy of the quartz crystal to be released and returned. The crystal vibrates with a certain frequency, and the exciting current will pass through the two plates to the pin of the crystal, and the peak current will flow through the crystal to the ground end. And with the response of the resonance phenomenon, the electromagnetic energy of the crystal is released in a faithful way, forming a resonance oscillation, so as to obtain an oscillation signal.At the same time, this oscillator also adds a temperature-compensating transistor. This transistor has an integrated circuit inside, a thermistor, and a resistor connected in series on the base of the transistor. The thermistor changes its resistance according to the temperature change, and then the bias current of the external signal amplifier will change in a certain range. In this way, the oscillator will remain in a relatively stable working state, and it can also output the corresponding frequency signal in a wide range of temperatures.In addition, this oscillator not only has good temperature compensation characteristics, but also has a high degree of stability for work. High frequency crystals used in the oscillator can effectively reduce the frequency drifting, and the wide range of load stabilization can stabilize the discharged current and output the accurate frequency signal.

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