The formula for finding the value of frequency of Square Wave is given below:Įxample: for calculating frequency mathematically for the waveform shown in figure The output for the square wave is taken from the PIN 10 in series with a 200 ohm resistor. The combination of resistor and capacitor (RC) generates output with a certain frequency. A resistor and capacitor is externally connected to the PIN 2 and made short with PIN 3. We can supply an input voltage range of 3v to 15v to the IC. Working of the Circuit for Generating Square Wave Used in Monostable mode to simultaneously retrigger +trigger and –trigger pin Inverse output of pin 10, means it gives low output By giving a high pulse to this pin, it resets the output Q to low and Q’ to high When used in Monostable mode we give Low to High transition to this pin When used in Monostable mode we give High to Low transition to this pin This IC is mainly used in Inverter circuit to generate Alternating current from DC current.Īpplication of this IC are Frequency discriminators, Timing circuits, Time-delay applications, Envelope detection, Frequency multiplication, and Frequency division.Ĭommon pin for connecting resistor and capacitor to it You can use the IC for generating clock pulse for various applications. Here, we are using the IC to generate square and sine wave, for this we just need few resistor and capacitor. It has a wide range of input voltage (3v to 18v) and DC current input is up to ☑0mA with a high operating temperature range of −55☌ to +125☌. It provides both Monostable (one-shot) and Astable (free running) operation. The 4047 IC is one of the popular IC with low power consumption. Minimum Value of C for Monostable Mode: 1000 pFīefore going into detail we should know about IC 4047. Minimum Value of C for Astable Mode: 100 pF You can vary the frequency of square wave by moving the potentiometer or you can use different value of resistor and capacitor to vary the output frequency. The circuit is for this Square wave generator is given above. This Square wave can be further converted into Sine wave by adding few more resistors and capacitors.

This can be used as a clock pulse for some of the ICs which need clock pulse to operate. It only requires few resistors and capacitors to add externally to generate the square wave. In the Astable mode the output waveform of 4047 IC fluctuates between high and low logic levels which is identical to the square wave. In this tutorial we are going to show you that how to Generate a Low Power Square Wave Using IC 4047, we will also confirm the output using Oscilloscope.

Integral of a square wave