stable low frequency crystal
The Colpitts crystal oscillator is a type of electronic oscillator that uses a combination of capacitors and an inductor to create a resonant circuit, which is essential for generating a stable frequency output. The primary components of the circuit include the 2N3823 JFET, which serves as the active device, along with the crystal, which determines the oscillation frequency.
In this configuration, the crystal is connected in parallel with two capacitors, forming a voltage divider that influences the feedback necessary for oscillation. The JFET amplifies the signal, providing the necessary gain to sustain oscillations. The choice of the 2N3823 JFET is significant due to its low noise characteristics and high input impedance, which help maintain the stability and performance of the oscillator across varying temperature conditions.
The circuit typically requires a DC power supply to operate, and the output can be taken from the drain of the JFET. Additionally, the design may include biasing resistors to set the operating point of the JFET, ensuring that it operates in the appropriate region of its transfer characteristic for optimal performance.
The Colpitts oscillator is widely used in applications such as RF signal generation, clock generation for digital circuits, and in various communication systems where stable frequency generation is crucial. The design's simplicity and effectiveness make it a popular choice among engineers and hobbyists alike.This is the design circuit for a Colpitts-crystal oscillator circuit. It is suitable for low frequency crystal oscillator circuits. Using the 2N3823 JFET, this circuit has excellent stability because the temperature will not vary the 2N3823 JFET circuit loading. This is the figure of the circuit. 🔗 External reference
Related Circuits
Thesis by Rafael Bräg at the University of Canterbury, New Zealand, in cooperation with the Universität Karlsruhe, Institut Elektrotechnik und Hochspannungstechnik. The thesis presents a comprehensive study conducted by Rafael Bräg, focusing on advancements in the field of electrical engineering....
Software on a MacBook Pro includes Laidman & Katsura's WaveWindow, which functions as a software oscilloscope. It is beneficial for individuals working with sound on the Mac, offering an educational and entertaining experience. Additionally, Faberacoustical's Signal Scope allows for...
This is a low-cost universal battery charger circuit. This circuit is designed to charge NiCd and NiMH batteries and is ideal for use in vehicles. The circuit converts mains voltage. The low-cost universal battery charger circuit is engineered to efficiently...
Capacitors are major electronic components classified as passive components. They are extensively used in electronic circuits, and virtually no circuit can be constructed without these essential parts. The primary function of a capacitor is to block direct current (DC)...
Crystal Controlled Oscillator Circuit. This general-purpose signal source is highly effective in signal-tracing applications. The output level is adjustable. The crystal-controlled oscillator circuit is designed to provide a stable and precise frequency output, which is essential for various electronic applications,...
The following circuit illustrates a 40 MHz/400 MHz Frequency Counter Circuit Diagram. This circuit is based on the PIC16F84 IC. Features: The frequency counter circuit operates within the range of 40 MHz to 400 MHz, utilizing the PIC16F84 microcontroller...