BB187,135

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Diodes - Variable Capacitance (Varicaps, Varactors) are applied to a wide range of applications. One such diode is the BB187,135 variable capacitance diode. This article will provide a brief overview of the application field and working principle of the BB187,135.

The BB187,135 is a Wideband varicap diode that is used in applications such as AC voltage regulation in AC/DC power supplies, LC filter tuning, AGC attenuators, amplifiers and modulators. This diode has good accuracy and is tolerant to high humidity and high temperature with large capacitance range and low sensitivity to reverse current. It features a high switching speed, low forward voltage, low capacitance dissipation and good thermal stability.

The BB187,135 is a P-N junction diode and its working principle depends on the dopant distribution of its components. This diode has both a P and N junction, with each one contributing to the overall capacitance. The P-region has a greater effect on the capacitance than the N-region, as the P-region has larger capacitive reactance. When biased, the junction capacitance changes, thus controlling the capacitance of the diode. This allows for the device to be accurately tuned for specific applications.

This diode utilizes a reverse bias technology by which it regulates the flow of current in order to control the capacitance. When the voltage is applied to the junction, a depletion region is created between the P and N-regions. This depletion region determines the capacitance of the diode. By varying the reverse bias voltage, the capacitance can be adjusted. The resulting capacitor acts as an AC voltage regulator, or an attenuator.

The BB187,135 is also capable of providing noise reduction in audio applications. A filter circuit can be created using two BB187,135s in series. This filter will reduce background noise and provide higher quality audio. The filter can also be tuned to reduce low frequency noise. Additionally, the BB187,135 can be used for AC voltage regulation, as well as AC and DC power supplies, power amplifiers and other high voltage applications.

In conclusion, the BB187,135 variable capacitance diode is a versatile component that can be used in a wide range of applications. Its working principle is based on the use of reverse bias technology, which enables it to regulate the flow of current and adjust the capacitance. This is beneficial for applications such as AC voltage regulation, noise reduction in audio applications, filter circuits, and power amplifiers. The BB187,135 is an ideal choice for most electronic applications that require a variable capacitance diode.

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