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µC makes inexpensive sine-wave generator - 12/17/98 Issue of EDN
You can use A/D converters or external, controllable oscillators to generate
sine waves from low-power, low-cost µCs. However, these methods add cost,
reduce reliability, increase circuit and software complexity, increase power
consumption, and increase overall size. Alternatively....Page includes
several designs. Scroll to find this one.... [Design Idea by Jorge
Luis B Romeu, IdeaWorks LTD, Syracuse, NY] |
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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....
EDN is migrating links. This link is not verified. Search the "title"
+ "EDN" for new link. |
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3-Phase Sine Wave Generation using the AD7226 Quad DAC - AN-321
Analog Devices Application Notes....[App Note] |
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4 Transistor Transmitter - This circuit provides an FM modulated signal with
an output power of around 500mW. The input Mic preamp is built around a couple of
2N3904 transistors, audio gain limited by the 5k preset. The oscillator is a colpitts
stage, frequency of oscillation governed by the tank circuit made from two 5pF
capacitors and the inductor.... [Design by Paul K Sherby] |
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555 stepper pulse generator - ….(electronic schematic added 08/08) [Site is
under construction right now] |
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68HC11 Synthesizes Accurate Sine Wave - 09/02/96 EDN-Design Ideas....You can
use a 68HC11 and a 12-bit serial DAC (Figure 1) to generate accurate sine waves
without using floating-point arithmetic. Figure 2 shows a block diagram for this
sine-wave generator. You can easily analyze the generator's behavior by writing state
equations in the z domain. You can also write equations in the s domain. The location
of the two poles.... [Design Idea by Mika Maaspuro, Espoo, Finland] |
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ABT Applications - National Semiconductor Application Note (app note
added 2/06) |
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ABT Ratings, Specifications & Waveforms - National Semiconductor Application
Note (app note added 2/06) |
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Adjustable High/Low Frequency Sine wave generator - ….... [Site is under
construction right now] |
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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 the output is positive, the
positive….PDF contains multiple circuits, scroll to find the one of interest....
[Design Idea by Moshe Gerstenhaber, Chau Tran, and Mark Murphy, Analog Devices
Inc,Wilmington, MA] |
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An OscillatorSawtooth & Square Wave Output - SimpleSingle Supply and Works
Very well with Minimum Parts Count....(Circuit design added 12/08) |
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AN204: How to Use the CS61880/CS61884 Arbitrary Waveform Generator - (app
note added 6/07) |
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AN-263: Sine Wave Generation Techniques - National Semiconductor Application
Note (app note added 2/06) |
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AN-321: 3-Phase Sine Wave Generation using the AD7226 Quad DAC - AN-321
Analog Devices Application Notes....[App Note] |
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AN-807: Reflections: Computations & Waveforms - National Semiconductor
Application Note (app note added 2/06) |
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AN-D12: LND1 Series: High Voltage Ramp Generator - Supertex Semiconductors
(app note added 2/06) |
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AN-H24: Expected Voltages & Waveforms - Supertex Semiconductors (app
note added 2/06) |
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Arduino LFO Waveform Generator - This project uses an Arduino microprocessor
and a DAC0808 8 bit parallel DAC to produce arbitrary low frequency oscillator (LFO)
waveforms. These waveforms are useful for driving a tremolo/vibrato circuit in a
guitar amplifier such as the Lil Tiger or a phaser effect such as the Liquidator....
[G. Forrest Cook] |
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Audio Test Oscillator - As a piece of test equipment, an audio oscillator
has to be considered essential for anyone working in with hi-fi gear. Toger with an
audio millivoltmeter (as described in Project 16), and even better if you have access
to an oscilloscope, you will be able to make proper measurements on everything from
preamps, RIAA equalization stages (for vinyl disks), tone controls,....(added 4/02)
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Band-pass Network - Circuit Ideas for Designers Application Notes Advanced
Linear Devices, Inc....[App Note] |
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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 circuit] |
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Build a PIC Controlled DDS VFO 0 to 6 MHz - (electronic circuit added 7/03)
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Build a simple complementary-bracket-pulse generator - 20-Aug-09 Issue of
EDN When building push-pull switching power converters or motor controllers, you
often need alternating pulses with a small amount of dead time between them to
minimize simultaneous conduction in output-switching devices. Switching controller ICs
have this feature, but they usually operate.... [Design Idea by Horst Koelzow, Global
Thermoelectric, Calgary, AB, Canada] |
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Bus request Signal generates logic waveforms - 06/20/96 EDN-Design
Ideas....The scheme in Figure 1 generates accurate and repeatable logic sequences—even
in presence of interrupt activity. Specifically, circuit generates 16-bit
logic sequences with a resolution of 100 nsec. This circuit's repeatability is
an advantage compared with or sequence-generation methods.... [Design Idea by
Dhananjay Gadre, IUCAA, Pune, India] |
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Circuit Generates Clean Sine Waves - 06/19/97 EDN-Design Ideas.... Med Dyer,
Jabra Corp, San Diego, CAGenerating a square wave at a particular frequency is fairly
simple. Many techniques for doing so exist, using counters, flip-flops,
and--everyone's favorite--the venerable 555 timer. Generating a sine wave, however, is
not nearly as simple or inexpensive.... EDN is migrating links. This link is not
verified. Search the "title" + "EDN" for new link. |
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CMOS hex inverter generates low-distortion sine waves - 9-Jun-05 Issue of
EDN Audio signal source uses hex inverter and handful of passives.... [Design
Idea by Al Dutcher, West Deptford, NJ; Edited by Brad Thompson and Fran Granville] |
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CMOS Toggle Flip Flop Using Push Button - The circuit below uses a CMOS dual
D flip flop (CD4013) to toggle a relay or other load with a momentary push button.
Several push buttons can be wired in parallel to control the relay from multiple
locations. A high level from the push button is coupled to the set line through a
small (0.1uF) capacitor. The high level from the Q output.... [Bill Bowden's site] |
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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 negligible.... EDN is migrating links. This link is
not verified. Search the "title" + "EDN" for new link. |
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Convert periodic waveforms to square-waves - 16-Aug-01 Issue of EDN
Converting periodic waveforms to square waves is an integral part of extracting a
clock signal from data, creating waveform generators, and making timing-pulse
generators. Any square-wave-conversion circuit isvaluable when the square wave's duty
cycle is variable and controllable. Figure 1 shows a circuit that has these attributes
and can drive several TTL-compatible loads.... [Design Idea by Ron Mancini, Texas
Instruments, Bushnell, FL] |
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Crystal Filter yields Pure Sine Wave - 06/98 Intersol App Note # AN9815 /
(app note added 6/03) |
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Current Feedback Amp yields Simple Oscillator - 06/08/95 EDN-Design
Ideas....Using a current-feedback op amp, you can generate high-frequency sine waves
with larger amplitude than conventional op-amp-based designs. The circuit in Fig 1
uses four passive components, connecting one capacitor to the compensation node
(another op amp that has this pin a.... EDN is migrating links. This link is not
verified. Search the "title" + "EDN" for new link. |
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