X11902

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The X11902 application field and working principle plays an important role in the field of electronics engineering. It is a versatile two-channel transistor array designed for a variety of applications and is widely used in audio preamplifiers, commercial frequency modulation (FM) receivers, wide-band operational amplifiers and pulse-width modulators (PWM). This device is easily configured to perform a number of different functions, allowing it to be utilized in a variety of different scenarios.The X11902 transistor array consists of two sections. The first section is a Class A Voltage Controlled Oscillator (VCO); the second section contains two bipolar transistors and one Schottky diode. The VCO has an input voltage of 0 to +12 volts and an output voltage of +15 to -15 volts. The two bipolar transistors have different characteristics; they are active in a designated frequency range (3-6 MHz) and have their own independent bias potentials. The Schottky diode acts like a feedback diode, limiting the oscillator frequency and preventing the transistor array from going into an infinite loop in certain cases.The X11902 can be used to create a variety of circuit designs, such as AM receivers, FM radios, RF amplifiers and pulse-width modulators. The main purpose of the X11902 is to regulate the frequency of the signal. When the signal passes through the transistor array, the VCO controls the transistor\'s bias potentials, allowing the signal to be varied in its frequency.In AM receivers, the X11902 is used to create an adjustable bandpass filter that allows frequencies to pass through it, but which rejects unwanted frequencies. The X11902 transistor array is configured to only allow frequencies within certain ranges to pass through and be amplified. This prevents noise and distortion from entering the receiver, resulting in better reproduction of the signal.For FM receivers, the VCO creates a voltage difference between the input and output frequencies. This voltage difference is known as the frequency deviation, and it is used to regulate the changing frequencies of the transmitted signal. The X11902 transistor array is set to the desired frequency deviation and then used to deflect the voltage at the output of the transistor, allowing the FM receiver to lock in on to the desired frequency.In RF amplifiers, the X11902 is used to provide amplification of the radio signal. The transistor array is configured to have a higher gain than what is present in the amplifier\'s existing circuitry. The VCO will then be set to the desired frequency, providing an adjustable bandpass filter that allows only the desired frequencies to pass through the amplifier and be amplified to a greater degree.The X11902 can also be used to create pulse-width modulators (PWM). The transistor array is configured to convert a continuous signal into a pulse train and is controlled by applying a bias voltage to the VCO. The output of the device is a high-speed pulse train, which is then used to drive motor or other type of electrical device.Overall, the X11902 application field and working principle provide engineers with the ability to create a variety of circuit designs that can be used in many different applications. It can easily be configured to operate within different parameters and can be used to create AM, FM, RF amplifiers, and even pulse-width modulators. The versatility of the X11902 transistor array make it a valuable tool for engineers.

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