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Oscillators

Oscillators are electronic circuits that produce a continuous and repetitive cyclic signal. They may be classified according to the type of waveform produced, such as sinusoidal and square oscillators, as well as according to the type of output, such as digital, analog, and phase-shift oscillators. In this article, we will discuss a particular type of oscillator, the TC-19.200MDD-T, and its application field and working principle.

TC-19.200MDD-T Application Field

The TC-19.200MDD-T is a low-power, low-voltage oscillator primarily used in embedded systems, especially those that require use of the VHF and UHF bands. These oscillators can operate at frequencies from 0.25 MHz to 200 MHz, suitable for use in applications such as digital radio, broadcast radio, digital television, automotive systems, communication systems, remote sensing, and fiber optics.

TC-19.200MDD-T Working Principle

The TC-19.200MDD-T is a quartz crystal oscillator that works by coupling the electrical energy from the circuit to the physical crystal structure. The quartz crystal is composed of two parallel plates with electrodes applied to both sides and is vibrated as an acoustic wave (or phonon wave) when voltage is applied. This vibration is then transduced into a sinusoidal output voltage, thus establishing an oscillation circuit.

The most common type of quartz crystal oscillator is the Pierce oscillator. This type of circuit uses an inductor and capacitors to control the frequency of oscillation. The frequency is controlled by varying the value of the components. In addition, Pierce oscillators are designed to oscillate in the sinusoidal mode, whereby the output voltage is a sine wave.

In addition to the Pierce oscillator, there are other types of oscillators that may be used to achieve higher frequencies, such as the Colpitts oscillator. This is a parallel-tuned amplifier circuit that uses an LC tank circuit composed of an inductor and a capacitor. The frequency of oscillation is adjustable by varying the value of components in the circuit.

Conclusion

The TC-19.200MDD-T is a quartz crystal oscillator that is used primarily in embedded systems for signal generation. It is suitable for use in applications ranging from digital radio and television to fiber optics. The oscillator works by coupling the electrical energy from the circuit to the physical crystal structure, vibrating the crystal as an acoustic wave, and transducing this vibration into a sinusoidal output voltage. There are several types of oscillators available, including the Pierce oscillator and the Colpitts oscillator, which are used when higher frequencies are needed.

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