ASTMHTD-12.000MHZ-ZR-E-T

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Oscillators are a crucial component in many electrical and electronic systems due to their ability to provide a precise and regulated reference frequency. The ASTMHTD-12.000MHZ-ZR-E-T oscillator is a highly accurate, temperature compensated oscillator designed for the most extreme environment conditions. This article will discuss the applications and working principles of this oscillator.

Applications

The ASTMHTD-12.000MHZ-ZR-E-T oscillator is used in a wide variety of applications. It can be found in base stations for satellite communication, aircraft avionics, radar systems, industrial robots, medical imaging systems, and many other electronic systems. The high accuracy and low temperature drift of this oscillator make it well suited for these applications.

Working Principle

The ASTMHTD-12.000MHZ-ZR-E-T oscillator is based on the basic piezoelectric-resonator oscillator principle. A quartz crystal is placed in a holder to form a resonator. This resonator is then bonded and soldered onto a printed circuit board (PCB) which provides the necessary connections for the circuit to operate. The oscillator circuit is constructed using an amplifier, a transistor, several resistors and capacitors, and the quartz crystal. The quartz crystal acts as a frequency selective filter, allowing only signals of a certain frequency to pass through. The amplifier amplifies the oscillation produced by the quartz crystal to a suitable level that can drive the transistors to generate the needed output signal.

When the oscillator is powered up, the quartz crystal starts to vibrate resonantly at its natural resonant frequency f0. This allows a continuous sine wave of a specific frequency to be generated. A feedback loop is used to maintain the oscillation for a period of time. The feedback loop is composed of a resistor, capacitor, and transistor. The resistor and capacitor form a low pass filter which helps to maintain a stable frequency for a period of time.

The capacitance of the crystal is temperature dependent, which will cause the output frequency to drift with temperature. To compensate for this, a temperature compensated circuit is used. The temperature compensated circuit uses a thermistor which provides a voltage proportional to temperature. This voltage is applied to the transistor in the feedback loop and the resistor-capacitor (RC) combination which helps to maintain the oscillator\'s frequency over a wide range of temperatures.

Conclusion

The ASTMHTD-12.000MHZ-ZR-E-T oscillator is an accurate, temperature compensated oscillator designed for the most extreme environment conditions. It is used in a wide variety of applications, including base stations for satellite communication, aircraft avionics, radar systems, industrial robots, and medical imaging systems. It is based on the basic piezoelectric-resonator oscillator principle, and uses a feedback loop to maintain oscillations over a wide range of temperatures. The temperature compensated circuit helps to maintain a stable frequency over a wide range of temperatures.

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