ABLJO-125.000MHZ

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Oscillators

Oscillators are electrical circuits that generate periodic, repeatedly alternating signal waves. Like many other electronic components, an oscillator can be constructed using several different types of components, including a resistor, a capacitor, and an active device such as a transistor or op-amp.

ABLJO-125.000MHZ application field and working principle

The ABLJO-125.000MHZ oscillator is designed for use in various applications that require a precise frequency of 125.000MHz, such as in television broadcasting transmitters and in the Global Positioning System (GPS). The oscillator is a type of oscillator known as a voltage-controlled crystal oscillator (VCXO).

In a VCXO, the oscillation frequency is determined by the frequency of a quartz crystal and then adjusted by an external voltage source. The quartz crystal acts as a parallel series resonant circuit with capacitance and inductance elements that provide the capacitive and inductive reactance in the circuit. The quartz crystal is connected to an oscillator circuit via two pins, which are called anothode and kathode, and can be driven by a DC voltage. The DC voltage, combined with the capacitive and inductive reactance of the quartz crystal, creates an oscillation frequency that is determined by the quartz crystal.

The ABLJO-125.000MHZ oscillator also uses a digital control section to adjust the frequency of the output signal. This section includes a microcontroller, an amplifier circuit, and an adjustable frequency multiplier. The microcontroller provides the control signal to the amplifier circuit, which indirectly adjusts the frequency of the output signal. With the help of the frequency multiplier, the frequency of the output signal can be adjusted up or down to generate the desired frequency of 125.000MHz.

In addition to its application as an oscillator, the ABLJO-125.000MHZ can also be used as a phase-lock loop (PLL) or voltage-controlled oscillator (VCO) to provide more precise frequency control. When used as a PLL, the oscillator is connected to a reference frequency, which is used to synchronize the oscillator frequency. When used as a VCO, the oscillator is connected to a voltage-controlled frequency divider, which is adjustable to change the frequency of the output signal.

Overall, the ABLJO-125.000MHZ oscillator is designed to provide a highly accurate and stable frequency of 125.000MHz for various applications. With its digital control section, the oscillator provides adjustable and precise frequency control, allowing it to be used in both oscillator and PLL/VCO applications. This makes the ABLJO-125.000MHZ an ideal choice for applications requiring a highly accurate frequency of 125.000MHz.

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