Electronic Design: Sine Wave Converter Circuit using NE555 IC

Wave Generator Circuit. - There are many electronic circuit designed to build wave generator or converter. This is aim to result many kinds wave source like sine, pulse, and square. One pupular wave in electronic design is sine wave for many application. So, in here we will present you one electronic circuit design to result sine wave using popular component that called with 555 IC.

Beside we will show you electronic design circuit and component parts need, we also will give you global description about this circuit. So, please enjoy to continue reading this article until finish and get more useful.

Electronic Circuit Design

Figure 1. Sine Wave Converter Circuit using NE555 IC (Source: ElectronicsProjectDesign)

Component Parts

• R1, R2 110K ohm 5% 1/4W Carbon Film Resistor
• R3 4.7K ohm 5% 1/4W Carbon Film Resistor
• C1 0.01uF/25V Ceramic Capacitor
• E1 1uF/25V Electrolytic Capacitor
• U1 555 Timer IC

Description

The electronic circuit design like in Figure 1 above show you sine wave converter circuit using the major component called with NE555 IC. In here we can use 12V source to charge this IC. The timer of 555 IC is configured as a Schmitt trigger principle. To result output square wave, it is do by applying the input sine wave signal with connecting trigger input pin 2 and threshold input pin 6 of the timer together.

According ElectronicsProjectDesign blog mentioned that this circuit is achieved because once the input signal is above 2/3 X 12V = 8V DC, the output 3 voltage will become low (< 1V DC). The output voltage will remain low until the input signal go down to below 1/3 X 12V = 4V DC. When this threshold is achieved, the output will go high (>10V DC).

It will remain high until the input signal voltage level reaches 8V when it will switch back to low. This type of switching continues on hence by applying a sine wave input, you will get a square wave output. 

The difference of voltage 8V-4V is 4V which is the hysteresis. This hysteresis value is necessary to ensure proper signal conditioning in the presence of electrical noises in the circuit. The capacitor E1 is used to remove the DC component of the input signal that may be present. Resistors R1 and R2 are used as voltage divider to divide the quiescent voltage of 6V.

There are many instances where you will need to convert a sine wave signal to square wave signal as many input ports of semiconductor devices are triggered by rising or falling of clock signal.