Waveform generation is required in various types of sensing actuation and time domain reflectometry tdr applications.
Sine wave generator ic.
It was first made by exar in the 1970s but is still around.
We can also use ic 4047 to generate sine wave.
A pure sine wave is highly desirable because the vast majority of electrical plug in appliances are designed to run on a true sine wave signal.
This ic is generally used in inverter circuit and we have previously made a square wave generator using this ic by adding few resistors and capacitors in previous circuit we can obtain sine wave with ic 4047 as shown in the circuit diagram below.
The output frequency can be controlled over a frequency range of 0 1hz to 20mhz by an internal 2 5v bandgap voltage reference and an external resistor and capacitor.
The two pole low pass filter using a2 filters the square wave output.
There are several sine shaper approaches covered well here overdriven pairs can be used to good effect in an ic design although a more sophisticated approach uses a fully translinear sine shaper circuit a la the.
The breadboard schematic of the above circuit is shown below.
No external components ar.
How it works the presented design actually produces a modified sine wave output but the waveform is highly processed and constitutes an exact equivalent of a sinusoidal waveform.
The max038 is a high frequency precision function generator producing accurate high frequency triangle sawtooth sine square and pulse waveforms with a minimum of external components.
The sine wave generator circuit that we will build is shown below.
If you need a sine wave generator that can be set to any frequency in the 0 01 hz to 1 mhz or more take a look at the xr 2206.
The ad9833 is a low power programmable waveform generator capable of producing sine triangular and square wave outputs.
This 4 5v goes to pin 8 and pin 4.
Pin 1 is grounded.
Sine wave generator using 4047 ic.
Figure 7 shows the xr 2206 connected as a sine wave generator.
This is accomplished through an inverter circuit using electronic components.
Another dimension in sine wave oscillator design is stable control of amplitude.
The output frequency and phase are software programmable allowing easy tuning.
In this circuit not only is the amplitude stabilized by servo control but voltage gain is included within the servo loop.
Two types of inverters currently exist on the market.
These ics all used the same basic approach an astable with tracking square and triangle outputs followed by feeding that triangle wave into a circuit known as a sine shaper.
Figure 1 shows the schematic for the quick sine wave generator.
Although complex in appearance this circuit requires just 3 ic.
So first for the power requirements of this circuit we use 4 5v to the 555 timer chip.
A 100 vrms output stabilized to 0 025 is achieved by the circuit of figure 2.
One old but still good function generator ic is the xr 2206.
