Articles Oscillators - 2

This project originated from the need to produce a linear crystal-controlled ramp signal for an HP 8620C RF sweep oscillator. It is inspired by a previously published ramp generator design [ 1 ]. That design though suffered from two issues: it used ...

By using JFETs in unusual configurations, you can design simple, high-frequency LC oscillators with few passive components. The structure for implementing the amplifier stage comprises a JFET transistor that you configure as a common drain (Figure ...

Designing astable circuits using the industry-standard 555 timer is a straightforward process when duty cycles are 50% or greater. However, you must overcome the many pitfalls of low-duty-cycle circuits to arrive at a desired result. Using only ...

Electronic Design Proper component selection can help reduce startup time for gated oscillators. Gated oscillators always present the typical problem of having a delay when a digital input control signal enables its oscillation. This delay happens ...

Shyam Sunder Tiwari Electronic Design Designers seeking a quick and easy frequency source often use a relaxation oscillator (Fig. 1) based on digital gates such as the 74HC14 inverter with hysteresis. The oscillator is also useful in sensor signal ...

High frequency Helmholtz coils are often used to generate uniform but time varying high frequency magnetic fields for a number of applications such as magnetic field susceptibility, calibration, and scientific experiment. A high frequency Helmholtz ...

David Hunter, Analog Devices Analog Dialogue Part 1. The AD8338 Input Network For this design, the differential output amplitude will be 1.0 V. With factory default settings, the internal 500 Ω resistors, and maximum gain, the input amplitude ...

David Hunter, Analog Devices Analog Dialogue In the past, the most difficult part of an arbitrary waveform generator was designing the output stage. Typical signal generators offer output ranges from 25 mV to 5 V. To drive a 50-Ω load, ...

Einar Abell EDN This Design Idea demonstrates a simple way to generate a multiphase clock signal, the frequency of which can be varied with minimal change in phase shift(s). The phase shift of the second output can be tuned from near zero to 180 ...

Dennis Seguine, Cypress Semiconductor Electronic Design Using a pseudorandom sequence (PRS) generator and some software, you can build a pink-noise generator (equal energy per octave) with 1 dB performance over the audio band, in addition to the ...