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Function Generator Circuits
 

Last Updated: November 30, 2017 07:44 AM


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

1Hz to 10MHz Sine/Square Function Generator based on the AD9835 & PIC16F628 -  An extremely simple and low cost Sine/Square wave generator based on the Analog Devices AD9835 Direct Digital Synthesis   (DDS) Generator chip.  The frequency can be set for any frequency from 1Hz to 10MHz in 1Hz resolution steps! All this with three push buttons and a novel "sliding window" LED display.  The controller chip is a Microchip PIC16F628.  There is no wiring, and the PCB fits into a standard UB3 Jiffy Box.   __

1Hz up to 22MHz Generator -  This is simple MAX038 generator.  It produces sine, triangle and square waves from 1Hz up to 22MHz.  The Amplitude, offset and duty cycle are adjustable to offer wide range of generated signals.  Frequency adjustment is made as a rotary switch S8 with a capacitor bank and variable resistor P7.   __

20MHz Function Generator -  The High Speed Function Generator was published in the professional electronics section of the Aug 1996 issue of Electronics Australia, and has proven to be extremely popular.  It is capable of generating 20Mhz Sine, Square, Triangle, and TTL waveforms.   __

20MHz Function Generator 2 -  MAX038 0.1Hz, 20MHz.   __

20MHz Function Generator 3 -  Uses MAX038 IC to provide 0.1Hz, 15MHz sinusoidal, square and triangle frequency.   __

20MHz High Speed Function Generator -  The High Speed Function Generator was published inprofessional electronics section ofAug 1996 issue of Electronics Australia, and has proven to be extremely popular.  kit is no longer available from any ofkit suppliers __

68HC11 Function Generator -  This site contains complete schematics and code for a 68HC11 based frequency counter, square wave synthesizer, sine wave synthesizer, programmable filter, capacitance and inductance meter, with a digitalker speech synthesizer output.  Project specifications are given below __ Designed by Michael Ellis

68HC11 Instruction Halts External RC Clock -  04/27/95 EDN-Design Ideas Using the circuit in Fig 1, a 68HC11 µP's stop instruction can put the µP's external RC-oscillator clock, as well as the µP itself, into a low-power mode.  On receiving an interrupt, the µP will exit the stop condition and enable the RC clock.  The RC clock, being a low-Q circuit, will start up immediately.  Crystal oscillators, on the other hand, can waste precious milliseconds coming up to speed and stabilizing __ Circuit Design by Allen Harstine, Micro Systems Engineering Inc, Lake Oswego, OR

8038 Function Generator -  Built around a single 8038 waveform generator IC, this circuit produces sine, square or triangle waves from 20Hz to 200kHz in four switched ranges.  There are both high and low level outputs which may be adjusted with the level control.  This project makesa useful addition to any hobbyists workbench as well __ Designed by Andy Collison

8038 Generator -  ICL8038 signal generator chip, manufactured by Intersil.  An improved version, made by Exar corp.  is available    (XR8038A) .  It can be used to produce three types of waveforms, sine, square and triangle.  The frequency, amplitude and duty cycle can be varied, and selection of waveform is done digitally.  To further reduce the complexity, a 3-to-1 switch may be used in place of the digital selection circuitry.  I made use of the digital selection mechanism because switches available on the market are prone to dirt accumulation and poor contact quality.  Besides, the digital method is a lot cooler!.  

DDS Function Generator -  The function generator is a generic measurement equipment to generate test signals.  Most function generators can generate a sine, square and/or triangle wave and high end equipments support arbitrary waveforms and have multiple channels.  The simple __ Designed by Radio LocMan

Everything You Always Wanted to Know About the ICL8038 -  The 8038 is a function generator capable of producing sine, square, triangular, sawtooth and pulse waveforms  (some at the same time) .  Since its introduction, marketing and application engineers have been manning the phones explaining the care and feeding of the 8038 to customers worldwide __ Designed by Bill O'Neil

Function Generator -  This function generator capable of producing sine, squareand triangle wave forms.  The frequency of this generator can be continuously varied from 1Hz to 1MHz in 6 steps. 
A fine frequency control makes selection of any frequency in between easy.  The amplitude of the wave formsare adjustable from 0 to 3Vpp.  The entire function generator is comprised of a single XR-2206 monolithic IC and a number of passive circuit component __ Designed by © 2008 Ayman CDMA

Function generator -  Function generator by NE566

Function Generator -  Built around a single 8038 waveform generator IC, this circuit produces sine, square or triangle waves from 20Hz to 200kHz in four switched ranges.  There are both high and low level outputs which may be adjusted with the level control.  This project makes a useful addition to any hobbyists workbench as well.   __ Contact: IQ Technologies

Function Generator aldinc -  Circuit Ideas for Designers App Note__ Advanced Linear Devices, Inc

Function generator based on 8038PCD -  Built around a single 8038 waveform generator IC, this circuit produces sine, square or triangle waves from 20Hz to 200kHz in four switched ranges.  There are both high and low level outputs which may be adjusted with the level control.  This project makesa useful addition to any hobbyists workbench as well __ Designed by Andy Collison

Function Generator Has Variable Frequency -  02/17/11 EDN-Design Ideas Use a function-generator IC and an internal reference voltage to provide reliable frequency settings.   __ Circuit Design  Adolfo Mondragon, Electrolux Products, Juarez, Mexico; Edited by Martin Rowe and Fran GranvilleFebruary 17, 2011

Function Generator Sine / Triangle / Square / SaW / Burst Sweep Noise based on PIC16F870 -  PIC Project  Sine Triangle Square Saw Burst Sweep Noiseruns on a PIC16F870 __ Designed by Luhan Monat-Mesa Arizona

Generating Low Duty-Cycle Pulses with a Function Generator (5988-7507EN): Aligent Application Note -  Application Note__ Aligent

How to Connect Two or More Signal Generators to Create a Multi-Channel Waveform Generator -  Application Note__ Aligent

How to Generate Low Duty Cycle Pulses with a Function Generator -  Application Note__ Aligent

Low Frequency Function Generator -  Due to the unavailability of very low frequency function generators and the problems experiencing with them to generate a wave form starting with a particular trigger input has prompted me to design this function generator.  The system consists of a personal computer and the printer port is used

MAX038 Function Generator -  This is a function generator that can generates 10Hz through 20MHz in six ranges.  Analog output can select one of any wave forms, sine, triangle or square.  TTL output can select 50% fixed duty or variable pulse width.   __ Designed by The Electronic Lives Manufacturing-presented Chan

Max-038 Signal -  The Max-80 function gernerator IC is specified to work to 20 MHz.  So far, this unit works nicely to 50KHz.  Since I seldom need signals higher than that, it has taken up a happy.)  __ Designed by Luhan MonatMesa Arizona

Program turns PC sound card into a function generator -  09/02/99 EDN-Design Ideas You can use a low-cost PC sound card as an analog-function generator by controlling the PC with the program "SoundArb.   " [To obtain SoundArb, download di2409setup.   exe, a 1.06-Mbyte self-extracting installation program.   ] __ Circuit Design by David Sherman

Sweep your Function Generator -  Function generators built around the XR2206 have always had an excellent price/performance ratio, and the IC although ‘obsolescent’ is still available.  If your generator does not have built-in sweep  (‘wobbulator’) capability, a small external circuit is all you need.  must register on this site __ Designed by Published in Elecktor July/Aug, 2010

Timers Generate Variable-Sweep Frequencies -  08/01/96 EDN-Design Ideas The circuit inFigure 1 generates a 4- to 5-kHz output frequency that precisely sweeps a variable amount of 1 to 100 Hz over a variable time of 0.5 to 5.0 sec  (1000-to-1 rate range) .  The resolution is 1 Hz, and worst-case accuracy during the sweep is 3 Hz  (0.06%) .  This circuit was designed to run from an 8-bit PC ISA bus, but any µC with an 8-bit bus and the appropriate control signals can control the circuit. __ Circuit Design by D Hayden, Hayden Electronics Design, San Diego, CA

Using a Function Generator to Create Pulse Width Modulation PWM Waveforms -  Application Note__ Aligent

Using a Function/Arbitrary Waveform Generator to Generate Pulses -  Application Note__ Aligent


Function Generator Circuits


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