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Lecture 130 Voltage Controlled Oscillators
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LECTURE 130 – VOLTAGE-CONTROLLED OSCILLATORS
pallen.ece.gatech.eduLECTURE 130 – VOLTAGE-CONTROLLED OSCILLATORS (READING: [4,6,9]) Objective The objective of this presentation is examine and characterize the types of voltage-controlled oscillators compatible with both discrete and integrated technologies. Outline • Characterization of VCO’s • Oscillators - RC - LC - Relaxation oscillators
Diodes and Transistors
inst.eecs.berkeley.eduhave a lower forward voltage drop than a standard diode. Their forward voltage drop at forward currents of about 1 mA is in the range 0.15 V to 0.45 V, which makes them useful in voltage clamping applications and prevention of transistor saturation. Varicap or varactor diodes These are used as voltage-controlled capacitors. These are important ...