Ceramic Resonator Oscillator

In a ceramic resonator oscillator the inductor is replaced by a ceramic resonator taking advantage of the fact that the resonator becomes inductive between resonant and anti resonant frequencies.

Ceramic resonator oscillator.

The operating principle of these oscillation circuits can be seen in fig. This type of signal oscillates between a high and low state using a piece of piezoelectric ceramic connected to two or more electrodes. Ceramic resonators are made of lead zirconium titanate pzt and are easier to manufacture than crystal oscillators made out of fine cut quartz. The operating principle of these oscillation circuits can be seen in fig 2 1.

The active part which makes the oscillator work is an amplifier which supplies the energy to keep the oscillation going. The most commonly used circuit is the colpitts circuit. In terms of application ceramic resonators are used in microprocessors where their frequency stability is not important and crystal oscillators are used for more precise time based applications. What is a ceramic resonator.

Ceramic resonators ceralock are made of high stability piezoelectric ceramics that function as a mechanical resonator. Ceralock find a broad range of applications such as automotive electronics communications personal computing and medical healthcare equipment. What is a ceramic resonator. The resonator or crystal itself has two connections.

The material can have two or more electrode which when connected to an oscillator circuit gets mechanical vibration as a result an oscillating signal of a specific frequency is generated. On the left the crystal right the ceramic resonator. Like you say the oscillator needs extra components the two capacitors. A ceramic resonator works similar to a crystal.

A ceramic resonator is sometimes referred to a dielectic resonator they are commonly used for timing devices which create a clock signal. In a ceramic resonator oscillator the inductor is replaced by a ceramic resonator taking advantage of the fact that the resonator becomes inductive between resonant and anti resonant frequencies. A ceramic resonator is an electronic component consisting of a piece of a piezoelectric ceramic material with two or more metal electrodes attached. Remember from the inductance meter tutorial that an lc tank will resonate at its natural frequency.

The ceramic resonator utilizes a frequency within the electrical component but unlike the crystal which has a frequency tolerance of 10 30 ppm a ceramic resonator carries a 0 5 or 5 000 ppm frequency tolerance which is generally used in microprocessor applications where absolute stability is not important. See that tutorial for more information. Similar to the crystal oscillator ceramic resonator is also an electronic circuit or a device used to generate an output of oscillation frequency with the help of ceramic as a resonating piezoelectric material. When connected in an electronic oscillator circuit resonant mechanical vibrations in the device generate an oscillating signal of a specific frequency.

Before we look at the ceramic and crystal resonators let s take a look at the lc oscillator so we need a coil and capacitor.