# Questions tagged [square]

A square wave is a non-sinusoidal periodic waveform in which the amplitude alternates at a steady frequency between fixed minimum and maximum values. The square wave is a special case of a pulse wave which allows arbitrary durations at minimum and maximum. The ratio of the high period to the total period of a pulse wave is called the duty cycle. A true square wave has a 50% duty cycle (equal high and low periods).

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### What is the best way to get a sine wave from a square wave?

I have square waves of different frequencies (1KHz to 20KHz), and I need to convert them to a sine wave of the corresponding fundamental frequency. A RC ladder Low-pass filter was the first thing ...
5answers
51k views

### Sine wave to square wave - Schmitt trigger

I need to transform a bipolar sine wave (varies from -5 V to 5 V, 1 kHz) to a square wave for further digital processing (0 to 3.3 V), as in this image: The important thing is ...
3answers
5k views

### How do you shift a square wave down?

I have a square wave the oscilates at 25khz from 0 to 30v. I would like it to oscillate from -15v to +15v. Is there a SUPER DUPER SIMPLE circuit to do this? Keep in mind it's going up and down at ...
4answers
5k views

### Why sine wave not square wave?

Rectifying square wave voltage seems to give us DC directly without the need of a capacitor. so, why do we prefer sine wave over it? What would change if I powered any adapter (laptop adapter as ...
2answers
249 views

### Square wave oscillator on PSpice simulation

I'm new to PSpice and here I was trying to simulate a square wave oscillator using a LM193 on PSpice. Here is the circuit that I've created there: Edit: The capacitor C1 has an IC set to 0 However, ...
4answers
2k views

### Amplify Square Wave with Simple Mofset Circuit

I am a hobbyist. I have a square wave being generated by a 5 volt Arduino. (I tried a 555 circuit but I couldn't get it at an exact square wave.) The Arduino square wave runs from about 2 or 3 volts ...
1answer
4k views

### Create a blinking LED circuit with a z-diode and a capacitor

I was searching for the most simple LED flashing circuit. On a webpage (http://cappels.org/dproj/simplest_LED_flasher/Simplest_LED_Flasher_Circuit.html) I found the following circuit with a transistor ...
5answers
412 views

### High Frequency Square Wave Generator

I want to generate square wave but there are some challenges. Rise time should be less than 2ns as well as fall time (for 0V to 5V). Duty cycle is not so important it should stay high like 40 ns. I am ...
5answers
180 views

### Making a square wave which has two different kinds of pulse width

I am going to make a square wave which has two different kinds of pulse width.At first,i think i can use the digital logic gate to finish it,however,after taking lots of time for trying,i still can't ...
4answers
462 views

### Offset when trying to convert square to triangular wave

Hi I constructed a circuit to create a 1Hz square wave with LM741 Opamp. The first part makes that and it makes it perfectly. But I need to convert it to a 8Vpp triangular wave. Without any offset, I ...
3answers
315 views

### maximun number of inputs on a opamp adder circuit

With 4 timers of a mcu I am generating 4 square signals , each of them have an amplitud of 3.3v and are generated at diferent frequencies (8KHz 9KHz 10KHz and 11KHz), to generate a multitone signal I ...
3answers
2k views

### Phase Shift Square Wave

Is it possible to shift the phase of a square wave (which is generated by an arduino ) with passive components? I have a 0 to 12v square wave that I would like to split into several phases. The idea ...
3answers
435 views

### Converting a square wave into a sine wave

I have been researching methods for converting a square wave into a sine wave, but I cannot seem to reach a conclusion. Is it possible to preserve the amplitude and frequency of a square wave when ...