1KHz Sine Wave Generator:
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2MHz RF Oscillator: |
4 Transistor Transmitter:
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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:
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Basic RF Oscillator #1:
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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:
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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
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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 Distortion, Amplitude Stable
Sine Wave Oscillator:
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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
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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:
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Sine Wave Generator With Crystal
Accuracy:
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Sine/Cosine Wave oscillator: |
Square Wave to Sine Circuit:
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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: |
Two Transistor Sine Wave
Oscillator:
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UHF Oscillator:
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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:
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