Ceramic Resonator Circuit

I had a rigol dual channel cheapo oscilloscope and had scoped a working board i made previously and the nice 8mhz signal was easily seen with no problem due to loading by the probes.

Ceramic resonator circuit.

The impedance and phase characteristics measured between the terminals are shown in fig. Here is the main circuit configuration. Though this shortwave transmitter circuit can reach barely around 5 meters but you can be increase the range easily with a simple rf amplifier and a low pass filter stage. A ceramic resonator s equivalent electric circuit is identical to a quartz crystal.

With a ceramic resonator it is defined as the time to reach 90 of the oscillation level under steady conditions as shown in fig 6 1. A 7 mhz oscillator with a variable crystal oscillator vxo operates very stably but it allows only a small frequency variation approx. When connected in an electronic oscillator circuit resonant mechanical vibrations in the device generate an oscillating signal of a specific frequency like the similar quartz crystal they are used in oscillators for purposes such as generating. Vfo with ceramic resonator.

Because its operation is similar to a crystal it can be used in the same oscillator configurations. Generally smaller loading capacitance a higher frequency ceramic resonator and a smaller size of ceramic resonator will cause a faster rise time. With the advance of the ic technology various equipment may be controlled by a single lsi integrated circuit such as the one chip microprocessor. Rise time is primarily a function of oscillating circuit design.

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. This transmitter is very low power and very stable as well uses a readily available 3 terminal ceramic resonator to set the frequency. For example murata offers the ceralock series ceramic resonators. The design of the circuit varies with the application and the ic to be used etc.

The 8mhz ceramic resonators were not seemingly working. For ceramic resonators equivalent circuit constants fig. In contrast a vfo with an lc resonant circuit can be tuned over a range of several hundred khz but its frequency stability will depend upon its construction. Ceramic resonator is a colpitts circuit.

What is a ceramic resonator. Although the basic configuration of the circuit is the same as that of a crystal controlled oscillator the difference in mechanical q results from a difference in. The material can have two or more electrode which when connected to an oscillator circuit gets mechanical. This device has been developed to function as a reference signal generator and the frequency is primarily adjusted by the size and thickness of the ceramic element.

5 2 shows the symbol for a ceramic resonator.