Sine Wave Generator Circuit Using 555

We can also use ic 4047 to generate sine wave.

Sine wave generator circuit using 555. The xr 2206 is an older ic that is still available and a great way to generate sine square and triangle waves over a wide frequency range. Simple sine wave signal generator using 555 timer ic about this video a sine wave or sinusoid is a mathematical curve that describes a smooth periodic osci. Therefore we use 18v for the supply dc voltage for this circuit. How to build a sine wave generator with a 555 timer chip.

The square wave is an input to the sine wave generator which is used to convert square wave into same amplitude of sine wave. Sine waves are waveforms which alternate in values during a cycle. In one of my earlier posts we elaborately learned how to build a spwm generator circuit using an opamp and two triangle wave inputs in this post we use the same concept to generate the spwms and also learn the method of applying it within a ic 555 based inverter circuit. So this is our adjustable square wave generator circuit shown above.

For most applications it is neither economical nor practical to dedicate a function generator that costs roughly 1200. Being that we are using a 555 timer chip the maximum voltage that a 555 timer can withstand is 18v. Astable multivibrator generates a square wave 10 5v amplitude and required frequency duty cycle. The working of the above shown two diode ic 555 pwm circuit is quite simple.

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. Figure 7 shows the xr 2206 connected as a sine wave generator. In this circuit we will show how we can build a sine wave generator with a 555 timer chip. Sine wave generator using 4047 ic.

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. Using variable resistor r2 we adjust the frequency square wave. 4 another sine wave version using ic 555. In addition you have experimented with square wave relaxation oscillators a wien bridge sine wave oscillator and waveform synthesis using digital counters.

It s in fact a standard astable multivibrator design with the exception of an independent on off period control of the output. So the first thing of concern for this circuit is power what power the circuit will run off from. But these signal is of small amplitude.