Function Generator Circuit Design
In this project a circuit model is proposed that can simultaneously generate many different mathematical functions.
Function generator circuit design. First a function generator also called a tone generator is an electronic device that can output a specific waveform at a set frequency. The function generator is very useful tool for the electronics freaks. The different types of waveforms have different frequencies which can be generated by using the instrument as a function generator. A function generator is usually a piece of electronic test equipment or software used to generate different types of electrical waveforms over a wide range of frequencies.
The circuit model is designed and simulated with ngspice and its performance is demonstrated through the simulation of a number of non linear functions. The one we will build can output square triangle or sine waveforms. We get ours through a potentiometer. The circuit can also easily allow for amplitude adjustment.
Some of the most common waveforms produced by the function generator are the sine wave square wave triangular wave and sawtooth shapes. Like standard function generators the circuit allows for frequency adjustment. These waveforms can be either repetitive or single shot. The proposed function generator model is based on a polynomial expansion model that uses a 10th order polynomial approximation of any of the required functions.
It is needed for tuning resonance circuits testing audio and video equipment designing of analog filters and for many other different purposes. A function generator is a electronic device that can produce a variety of different waveforms. Since ad9833 has no capability to change output signal amplitude i ve used a digital 8 bit potentiometer as a voltage divider at the device output endpoint will be described in further steps. Integrated circuits used to generate waveforms may also be described as function generator ics.
Integrated function generator circuit is a central part of the design controlled via spi interface with ability to generate square sine triangle wave with frequency modulation option. This instructable describes the design of function generator based on the maxims s analog integrated circuit max038.