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Oscillators

An oscillator is an electronic circuit successfully in producing a sustained periodic signal, with a stable frequency and amplitude.353SB3A38CT is a type of oscillator with quickly build up ceramic resonator and wide frequency range.

Application Field

Usually, the 353SB3A38CT oscillator is used for applications which require a membrane switch and snap-in or surface mounting. It is also for use in basic digital circuits such as logic circuits, timer/ counters, frequency dividers, microcontrollers, and other electronic gadgets. Its high stability, low power consumption, low variation of temperature and characteristics make it suitable to be used in computers, telecommunication, consumer electronics and other digital devices. Besides, it is also popular in many compact equipment, especially electron probing instruments.

Working Principle

The working principle of the 353SB3A38CT oscillator is based on a ceramic resonator. This resonator is like a small capacitor. Depending on the dielectric constant of the ceramic materials, the resonance frequency of the oscillator can be various. It is within a frequency range of from 1 MHz to 50 MHz.

The ceramic resonator includes of two electrodes. Moreover, these two electrodes also contain a metal coating that is installed for insulation and device support. The frequency of the oscillator is determined by the size and shape of the ceramic material. In addition, its stability can be improved by selecting the proper ceramic material.

The circuit connection of the oscillator is a transistors bridge circuit. It includes of two transistors, two bypass capacitors and two resistors. After being powered, the circuit will produce an alternating current signal. The current signal in the ceramic resonator will become an electromagnetic wave and be transmitted to the two transistors. Then, it will be transmitted to the output electrode, and the sine wave is ready.

By using the three components above, the frequency of the oscillator can be adjustable. If the resistance value or capacitance value is increased, the frequency will decrease. However, if the resistance or capacitance is decreased, then the frequency will increase. This offers a flexibility of oscillator frequency.

Conclusion

To sum up, the 353SB3A38CT oscillator is great for applications that need a membrane switch along with snap-in or surface mounting. It uses a ceramic resonator that has a high frequency, temperature stability, low running current and small size characteristics. It also offers flexibility in oscillator frequency and provides a quick output of sine waves. All these features make the 353SB3A38CT oscillator modern and essential in many electronic gadgets.

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