BB145,115 Discrete Semiconductor Products

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When it comes to diodes and their various applications, the popular BB145,115 Variable Capacitance (Varicaps, Varactors) definitely stands out from the rest. These devices, despite their small size, offer an impressive level of performance and have an extensive list of applications they are suited for.

To understand the remarkable capabilities of these devices, one must first learn their underlying working principle. As the name implies, these diodes feature variable capacitance, meaning its capacitance value is adjustable. This is made possible by the device\'s construction, which includes an integrated control gate and a diode junction.

When a reverse bias voltage is applied to the device, the depletion region formed near its junction increases. When the control gate is volt-adjusted, either the depletion region capacity increases or decreases, resulting in a change in capacitance. This phenomenon is known as variable capacitance and is the device\'s calling card.

Now that the working principle of this device is understood, let\'s move onto its various applications. Thanks to its adjustable capacitance, the BB 145,115 can be used in exacting applications that require consistent, repeatable performance. It can be used in frequency multipliers, resonance balancing circuits, and demodulation of video signals.

Typically, the BB 145,115 comes in two types. The first type is a variable phase-shift network, which is composed of two series-connected varicaps, two resistors, and one shunt capacitor. This allows for the phase-shifting of a sinusoidal signal over a wide range of frequencies. The second type is a variable frequency generator. This consists of two series-connected varicaps and two resistors and is used for the generation of oscillations over a wide range of frequencies.

The BB 145,115 Variable Capacitance (Varicaps, Varactors) is referred to as a “smart” component as it offers a wide range of features and performance enhancements. It allows for nearly exact adjustment of capacitance, display of multiple scale values, and much more. Thanks to these benefits, the BB 145,115 has become a popular component among engineers, technicians, and hobbyists alike.

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