Rounding Off a square wave


Posted on Sep 8, 2012

To `round` your square wave, you need to integrate it twice; once to produce a triangular wave, and a second time to produce a parabolic waveform. (A parabolic wave looks pretty much sinusoidal.) You can do this passively using a simple network such as the one shown below. Let R2 = 10*R1, and let R1*C1 = R2*C2 = 1/f, where 'f' is the frequency of the applied square wave. It's important that R2 be much (at least a factor of 5 or so) smaller than the input impedance of the amplifier; likewise, R1 should be a good bit larger than the microcontroller's output impedance.


Rounding Off a square wave
Click here to download the full size of the above Circuit.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

VHF TV Signal Amplifier
Phone line FM transmitter
Musical Envelope Generator And Modulator
Circuit Detector and Disconnecting Over Voltage Schematic
Digital Clock
Useless Electronic Circuits
accelerometer Can internal PLL affect control logic in MEMS sensor
avr What is the point of Buffers like this in Programmers
220V direct contact means closing circuit



Top