Sine Wave Generators / Oscillators

68HC11 Synthesizes Accurate Sine Wave: 09/02/96 EDN-Design Ideas

Amplitude Stable Oscillator has Low Distortion, Low Cost: 11/09/00 EDN-Design Ideas / PDF contains multiple circuits - scroll to find this circuit

Audio Test Oscillator:

Basic RF Oscillator #1:

BatteryPowered Sine Generator Covers 100 Hz To 10 kHz : 05/27/02 Electronic Design - Ideas for Design / We needed a handheld, battery-powered signal generator with a sine-wave output that was continuously adjustable from 100 Hz to 10 kHz. For such a wide frequency range, we selected a function-generator type of oscillator, which requires a...

Crystal Filter yields Pure Sine Wave: 06/98 Intersol Application Note # AN9815

Current Feedback Amp yields Simple Oscillator: 06/08/95 EDN-Design Ideas

Digital signal controls sine generator: 05/15/03 EDN-Design Ideas / The circuit of Figure 1 produces an accurate, variable-frequency sine wave for use as a general-purpose reference signal. It includes an eighth-order elliptic, switched-capacitor lowpass filter, IC3, which uses a 100-kHz square-wave clock signal that microcontroller IC2 generates. (Any other convenient square-wave source is also acceptable...

Digital Signal Processor (DSP) for Radio Communications:

Digital Signals Produce Pure Sine Waves: 10/09/97 EDN-Design Ideas

Digital Sine-Wave Generator Produces 0� To 360� Phase-Shifts: 12/04/00 Electronic Design - Ideas for Design / Sine-wave generators with 0� to 360� phase-shifts are very important testing blocks in many systems involving DSP operations (i.e., I/Q modulator-demodulator communication, phase-angle measurements and up-down counter conversion in. . .

DTMF Coder Makes Low Cost Sine Wave Generator: 10/13/94 EDN-Design Ideas

Easily Tuned Sine Wave Oscillators: National Semiconductor Application Notes,28-Jun-1996

Few Extra Components Stabilize Oscillator: 02/15/96 EDN-Design Ideas

Four Transistor Tracking Transmitter:

Gates Provide Low Cost Sine Wave Generator: 08/15/97 EDN-Design Ideas

LC Oscillator has 1% THD: 03/31/94 EDN-Design Ideas

Low Distortion Oscillator Starts Fast: 05/26/94 EDN-Design Ideas

Low Distortion, Amplitude Stable Sine Wave Oscillator:

Low Frequency Sine Wave Generator: The two circuits below illustrate generating low frequency sine waves by shifting the phase of the signal through an RC network so that oscillation occurs where the total phase shift is360 degrees.

Microcontroller-based sine-wave generator has crystal accuracy: 12/14/98 Electronic Design - Ideas for Design / One way to generate a sine wave is to pass a square wave through a low-pass filter. The high-order harmonics will be filtered out, leaving only the fundamental. The higher the order of the filter, the purer the sine wave produced. The MAX292. . .

Microphone Circuit Test Oscillator: 440 Hz Tone generator for testing XLR microph1-lines

Negatrons Enrich Filter, Oscillator Designs: 07/21/94 EDN-Design Ideas

OpAmp Oscillators Simplify RF Designs: 10/10/96 EDN-Design Ideas

Oscillator Lowers Distortion & Phase Noise: 08/18/94 EDN-Design Ideas

Oscillator, 2MHz.: Fair Warning: this site has pop-up ads

Programmable oscillator uses digital potentiometers: 03/07/2002 EDN - Design Ideas / Digital potentiometers are versatile devices; you can use them in many filtering and waveform-generation applications. This Design Idea describes an oscillator in which setting the resistance of two digital potentiometers independently programs the oscillation amplitude and frequency. Figure 1 shows a typical diode-stabilized Wien-bridge oscillator that generates accurate sine waves fro... .

Self Oscillating Amplifier for Distortion Testing: allows the home constructor to make quite accurate measurements, without having to spend a lot of money on a low distortion oscillator

Simple Circuit Generates Clean Sine Waves: 06/19/97 EDN-Design Ideas

Simple Compensation Extends Oscillator's Range: 12/05/96 EDN-Design Ideas

Simple Sinewave Generator:

Simple sine-wave generator has no low- or high-pass filters: 05/25/98 Electronic Design - Ideas for Design / Generating sine waves with controlled frequencies over a wide range is difficult when using RC or LC sinusoidal oscillators. However, this performance can be simply created using a wideband digital squarewave oscillator, a counter, and a weighted. . .

Sine Wave Generation Techniques: National Semiconductor Application Notes,04-Nov-1995

Sine Wave Generator:

Sine Wave Generator With Crystal Accuracy:

Sine/Cosine Wave oscillator:

Square Wave to Sine Circuit:

Swept sine oscillator has quadrature output: 08/18/97 Electronic Design - Ideas for Design / Signals with a know frequency but unknown phase may be detected using an in-phase and a 90� shifted reference signal, as frequently used in lock-in amplifiers, synchronous detectors, and frequency-response analyzers. The 90�-shifted signal. . .

The Wien bridge oscillator is reborn: 06/13/2002 EDN - Design Ideas / In 1940, William Hewlett and David Packard launched a product from a garage. The product was a Wien-bridge oscillator. It consisted of a single-pole highpass filter in series with a single-pole lowpass filter. To keep the gain constant, the circuit used an incandescent pilot light to provide AGC (automatic gain control)

Twin T Audio Sine Wave Oscillator:

Two Transistor Sine Wave Oscillator:

UHF Oscillator:

Variable Gain Stage uses Voltage Output DAC: 10/27/94 EDN-Design Ideas

Voltage Controls Sine Wave Frequency: 08/17/95 EDN-Design Ideas

Wein Bridge Oscillator:

Wein Bridge Oscillator is Reborn: 06/13/02 EDN-Design Ideas / In1940, William Hewlett and David Packard launched a product from a garage. product was a Wien-bridge oscillator. It consisted of a single-pole highpass filter in series with a single-pole lowpass filter.

Wein Bridge Oscillator keeps THD Below One PPM: 11/10/94 EDN-Design Ideas / The Wien-bridge sine-wave oscillator uses a light bulb to stabilize its amplitude. The circuit doesn't have a light bulb; it sports several enhancements that lower its distortion and generate a test signal pure enough for testing modern op amps and high-resolution A/D converters.

Wein Bridge Theremin: