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µC makes inexpensive sine wave generator - 12/17/98 EDN-Design Ideas: You can
use A/D converters or external, controllable oscillators to generate sine waves from
low-power, low-cost µCs. However, se methods add cost, reduce reliability, increase
circuit and software complexity, increase power consumption,.....(design idea added
6/06) |
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1kHz Sinewave Generator - Simple circuitry, low distortion, battery operated.
Variable, low impedance output up to 1V RMS. (electronic circuit added 06/07/08)
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3 phase sinusoidal waveform generator uses PLD - 10/12/06 EDN-Design Ideas: Five
ICs substitute for electromechanical three-phase source.....(design idea added 9/08) |
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4 Transistor Tracking Transmitter - (Tony van Roon's electronic schematic /
circuit added 4/02) |
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4 Transistor Transmitter - (design added 8/03) |
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68HC11 Synthesizes Accurate Sine Wave - 09/02/96 EDN-Design Ideas: (design idea
added 3/03) |
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Adjustable High/Low Frequency Sine wave generator - ….(design added 08/08) |
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AF Generator - My generator can produce sine- and squarewaves with frequencies
between 1 Hz and 100 kHz and amplitudes ranging from zero to 1.55 Veff in 600 Ohms.
Sinewave distortion is 0.1% or less between 20 Hz and 20 kHz, somewhat greater outside
this region. The output voltage …(electroninc design added 04/05/06) |
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Amplitude Stable Oscillator has Low Distortion Low Cost - 11/09/00 EDN-Design
Ideas: / The multivibrator is a common circuit that consists of an amplifier with both
positive and negative feedback (Figure 1a). When output is positive,
positive input terminal equals ˝V+, and voltage at negative input
terminal.....(design idea added 10/06) |
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AN-263: Sine Wave Generation Techniques - National Semiconductor Application Note
(app note added 2/06) |
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AN-319: Simple Interface between D/A Converter & Microcomputer Leads to Programmable
Sine-Wave Oscillators - AN-319 Analog Devices Application Notes (app note
added 6/06) |
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Audio LED VU Meter - The
circuit was designed to work with an audio power amplifier which operated off
+18v-0v-18v power rails. The actual voltage used is not too critical except that the
feedback is referred to the LED chain which itself is anchored to a +12v rail, hence
the separate stabilizer .... (added 5/09) |
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Basic RF Oscillator #1 - This basic circuit is eash to build and the components
are not critical. Most of them can be found in your junk parts box….(Tony
van Roon's electronic schematic / circuit added 4/02) |
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Circuit Generates Clean Sine Waves - 06/19/97 EDN-Design Ideas: (design idea added
3/03) |
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CMOS hex inverter generates Low distortion sine waves - 06/09/05 EDN-Design Ideas:
Audio signal source uses hex inverter and handful of passives.....(design idea added
11/05) |
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Compensation Extends Oscillator's Range - 12/05/96 EDN-Design Ideas: (design idea
added 3/03) |
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Crystal Filter yields Pure Sine Wave - 06/98 Intersol Application Note # AN9815 /
(app note added 6/03) |
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Current Feedback Amp yields Simple Oscillator - 06/08/95 EDN-Design Ideas: (design
idea added 3/03) |
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Current Feedback Amps Square Up Fast Signals - 06/23/94 EDN-Design Ideas: Using
current-feedback amplifiers to convert signals from sine waves to square waves for DSP
confers advantages over the more common comparator approaches. Current-feedback
amplifiers have wide bandwidths and relatively small and constant propagation delays.
These small, constant delays help meet the setup-and-hold requirements of.....(design
idea added 3/03) |
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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.....(design idea added 1/05) |
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Digital Signal Processor DSP for Radio Communications - (electronic circuit added
7/03) |
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Digital Signals produce Pure Sine Waves - 10/09/97 EDN-Design Ideas: Analog
oscillators produce excellent sine waves but are temperamental and hard to design.
They also require extensive redesign every time you change the oscillation frequency.
Digital oscillators….(design idea added 3/03) |
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DTMF Coder Makes Low Cost Sine Wave Generator - 10/13/94 EDN-Design Ideas: A
telephone DTMF IC produces, by design, two tones if you connect a single intersection
of the IC's 4[x]4 keypad matrix (Fig 1). (Telephones commonly have 3×4 keypads but,
unknown to many people, the applicable standard allows for a fourth row of four
keys.)But, if you connect two key inputs at once, the IC produces a
single-frequency,.....(design idea added 3/03) |
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Easily Tuned Sine Wave Oscillators - National Semiconductor Application Note
(app note added 2/06) |
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Few Extra Components Stabilize Oscillator - 02/15/96 EDN-Design Ideas: (design
idea added 3/03) |
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Gates Provide Low Cost Sine Wave Generator - 08/15/97 EDN-Design Ideas: (design
idea added 3/03) |
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LB-16: Easily Tuned Sine Wave Oscillators - National Semiconductor Application
Note (app note added 2/06) |
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LC Oscillator has 1% THD - 03/31/94 EDN-Design Ideas: At the heart of many
oscillators is a parallel-resonant LC tank circuit whose impedance is infinite at the
resonant frequency of 1/2[pi]ÖLC Hz. Infinite impedance implies an absence of parallel
damping resistance, so once an ideal tank circuit.....(design idea added 03/03/03) |
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Low Distortion Oscillator Starts Fast - 05/26/94 EDN-Design Ideas:.....(design
idea added 3/03) Unlike a Wien-bridge oscillator, the phase-shift oscillator in Fig 1
starts up quickly. Also, the circuit does not require that you adjust several trimming
resistors just to tune the oscillator to a given frequency. Experiments show that the
circuit's total harmonic distortion (THD)measurest.... |
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Low Distortion Wien Bridge Oscillator - low distortion wein bridge oscillator:
15Hz, 150kHz (schematic added 08/08/08) |
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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. (added 5/02) |
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Low-distortion Audio-range Oscillator - Generates very low-distortion sine waves
up to 1V RMS No thermistors required No settling time (added 3/05) |
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Mic Circuit Tester - Small oscillator to check mic & line circuits during sound
setup. 440 Hz Tone generator for testing XLR microph1-lines (added 5/02) |
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Negatrons Enrich Filter Oscillator Designs - 07/21/94 EDN-Design Ideas: The latest
wave of high-performance op amps allows you to incorporate "negatrons" (synthesized
negative resistors)into your oscillators and filters. Fig 1 shows the universal
filter/oscillator circuit based on a simulated lossy inductor and a negative
resistance,.....(design idea added 3/03) |
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OpAmp Oscillators Simplify RF Designs - 10/10/96 EDN-Design Ideas: (design idea
added 3/03) |
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Oscillator keeps THD beLow 1 PPM - 11/10/94 EDN-Design Ideas: (design idea added
2/06) |
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Oscillator Lowers Distortion & Phase Noise - 08/18/94 EDN-Design Ideas: In
addition to its normal role of controlling oscillation frequency, the crystal in Fig 1
also acts as a high-Q, self-tuned output filter, which rejects the noise and harmonics
of its input voltage, VB. The result is a clean output-frequency spectrum. With
a.....(design idea added 3/03) |
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Programmable Oscillator uses Digital potentiometers - 03/07/02 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.....(design idea added 1/05) |
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Self Heated Transistor Digitizes Airflow - 03/14/96 EDN-Design Ideas:
(added 5/02) |
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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.....(design
idea added 1/05) |
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Signal Processor DSP for Radio Communications - (electronic circuit added 7/03) |
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Signals Produce Pure Sine Waves - 10/09/97 EDN-Design Ideas: (design idea added
3/03) |
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Simple Circuit Generates Clean Sine Waves - 06/19/97 EDN-Design Ideas: (design
idea added 3/03) |
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Simple Compensation Extends Oscillator's Range - 12/05/96 EDN-Design Ideas: A
simple technique provides phase compensation for the oscillator in Figure 1a. In this
circuit, a tungsten lamp regulates the amplitude of a crystal bridge oscillator. This
type of oscillator produces a very low-distortion output at a very stable frequency.
The op amp must have a.....(design idea added 3/03) |
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Simple Interface between D/A Converter & Microcomputer Leads to Programmable Sine-Wave
Oscillators - AN-319 Analog Devices Application Notes (app note added 6/06)
|
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Simple sine synthesizer generates 19 kHz pilot tone for FM baseband signal -
04/14/05 EDN-Design Ideas: (design idea added 5/05) Low distortion,
single-frequency sine source for stereo FM. |
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Sine reference is synchronous with AC line - 02/15/00 EDN-Design Ideas: (design
idea added 2/06) |
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Sine Synthesizer Generates 19 kHz Pilot Tone for FM Baseband Signal - 04/14/05 EDN-Design
Ideas: Low distortion, single-frequency sine source for stereo FM.....(design idea
added 5/05) |
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Sine Wave Generation Techniques-AN263 - National Semiconductor Application Note
04-Nov-1995 (app note added 2/03) |
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Sine Wave Generator - (electronic circuit added 7/03) |
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Sine Wave Generator zen22142 - A classic Wien Bridge oscillator using an Op-Amp
covering a frequency range of 15 to 150kHz in four switched steps…..(electronic
schematic / circuit added 4/02) |
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Sine Wave Oscillator - Here is a simple Sine Wave Oscillator Circuit....(design
added 12/08) |
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Sine wave Step Up converter uses Class E concept - 02/17/05 EDN-Design Ideas: Many
power applications ranging from luminescent and fluorescent lighting to
telephone-ringing voltage generators require a more or less sinusoidal-drive voltage.
These applications typically require a waveform of only moderate quality, and its
frequency isn't especially critical. However, avoiding waveform discontinuities that
cause unwanted current peaks, excessive device dissipation, and EMC.....(design idea
added 6/05) |
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Sine/Cosine Wave Oscillator - (electronic circuit added 7/03) |
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Sinewave Generation Techniques - I recently discovered an interesting application
note from National Semiconductor in October of 1999. The article details nine sine
wave generation techniques. Some techniques can be accomplished several ways so there
are more than nine circuits available....(added 6/07) |
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Sinusoid generator uses dual output current controlled conveyors - 01/22/09 EDN-Design
Ideas: , You can design sine-wave oscillators without resistors, which improves
on power consumption.....(design idea added 08/09) |
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Spot-frequency Sine Wave Generator - 300Hz, 1KHz, 3KHz "output stable" test
equipment tool. 9V battery powered portable unit (added 3/05) |
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Square Wave to Sine Converter - (electronic schematic / circuit added 4/02) |
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Stable 18 MHz oscillator features automatic level control clean sine wave output -
06/23/05 EDN-Design Ideas: Analog oscillator has stable RF output.....(design idea
added 10/05) |
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Signals Produce Pure Sine Waves 10/09/97 EDN-Design Ideas: (design idea added
3/03) |
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Three phase sinusoidal waveform generator uses PLD - 10/12/06 EDN-Design Ideas -
Five ICs substitute for electromechanical three-phase source.....(design idea added
9/08) |
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Tuned Sine Wave Oscillators - National Semiconductor Application Note (app
note added 2/06) |
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Twin-T oscillator - This circuit produces an extremely low distortion sine wave,
in spite of the non-linear devices used for amplitude limiting (D1 and D2). The reason
is first that distortion (harmonics) is fed to the minus input of the opamp with far
less loss than to the plus input, severely attenuating them. Second, this oscillator
rides a delicate ....Designed by Andrew R. Morris (added 09/05) |
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Ultra Pure 125kHz Sine Wave Signal Source - For some RFID systems operating at
125KHz, a very low distortion signal source reference is needed. The circuit
shown on this page produces a 10-volt peak-to-peak signal into a 50-ohm load, with a
distortion of only 0.01%. ….(designed by David A. Johnson) |
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Variable Gain Control Produces Pure Sine Wave - 10/27/94 EDN-Design Ideas: The
circuit in Fig 1 delivers a pure, buffered, and level-controlled sine wave. With no
tuning requirements, the circuit works with all crystals up to about 30
MHz….....(design idea added 03/05) |
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Voltage Controls Sine Wave Frequency - 08/17/95 EDN-Design Ideas: (design idea
added 3/03) |
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Wien 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.....(design idea added 3/03) |
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Wien 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.....(design idea added 01/04) |
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Wien Bridge Oscillator Rail-to-Rail Sine Wave Generator - Circuit Ideas for
Designers Application Notes Advanced Linear Devices, Inc. (app note added 6/06) |
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Wien Bridge Theremin - (circuit / schematic added 2/03) |
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Wien-Bridge oscillator has simplified frequency control - In this article, a
modified version of the classical circuit that uses a single low-cost variable
resistor for frequency control will be described. (electronic design added 05/06/07) |
