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# schmidt trigger sine square

• ## how to write sin squared in javaJanuary 31

double maxHeight = 0.0; velocity = v; angle = theta; maxHeight = Math.pow(velocity, 2.0); maxHeight = Math.pow(sin, 2.0); maxHeight *= Math.sin(angle) / (2 * gravity); I'm trying to get the Math.pow(sin, 2.0);. it's asking me to declare sin. What am

• ## Which is the loudest in terms of sound intensity - Sine, Square or Sawtooth waveform?July 13

From this, (Square wave / Sine wave is more audible) I now understand that a Square soundwave will be louder than that of a Sine sound wave when played at the same frequency (for example 500 Hz). However, how about a sawtooth sound wave; which order

• ## How to display sine squared more compactlyDecember 1

If I have: \sin ^2(\theta ) My output is: This output just have too much space between the power and the parenthesis. How could I change this? --------------Solutions------------- I can reproduce your picture only if I add \left and \right in front o

• ## Can I use electrolytic capacitor in a schmidt trigger oscillatorAugust 27

I want to build this cricket chirping circuit that I found on Happy Lab. The values are specified as follows R1: 100 k R2: 39 k R3: 290 k C1: 100 nf C2: 10 µf C3: 10 µf C4: 100 µF D1,D2: 1N4148 IC: 74HC14 (6x inverter with Schmitt trigger) I have sou

• ## variable inverting op-amp Schmidt triggerFebruary 12

I need to have variable high and low thresholds. Where do I put a variable resistor to get better results?(R1,R2 or R3) --------------Solutions------------- Using a variable resistor for R3 will give a variable amount of hysteresis. Using a variable

• ## Sine wave to square wave - Schmitt triggerApril 5

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 that this sine wave can't be distorted, so there can't be any limiting dio

• ## How to determine low and high threshold levels of a Schmitt Trigger for a known input?January 26

Imagine I have a pulse train input which goes into a Schmitt trigger for getting sharpened. Imagine the HIGH of the input pulse train is around 8V and LOW is around zero volt. So what should one select the lower and upper threshold voltages in this c

• ## What can reduce overshoot and ringing on a simple square wave pulse generator?August 22

I've built a simple RC and Schmitt-trigger-based square wave pulse generator. On the breadboard, it has some obvious unwanted qualities due to jumper length, the breadboard itself, etc. Schematic and breadboard version: And the waveform output: In pa

• ## 555 as a Schmitt Trigger and an ON delay timer?September 9

I've scoured the internet trying to find this out to no avail. I would like to use a 555 timer to produce a Schmitt trigger with an ON delay of 20-30 seconds. Is this possible? Or will I have to use two timers? If I can do it with just the one 555, c

• ## Feeding higher voltage sine wave to Arduino interrupt pinApril 6

I want to use Arduino to count cycles from a bicycle generator. This generator has variable frequency (which I want to measure), but also variable voltage that is proportional to wheel speed, typically being above 6V. What I want is a way to limit th

• ## How to explain the advantage of Schmitt trigger over comparator for pulse conditioning?January 25

Above is the unshaped input pulse train. Red line is the set point for the comparator. I see many pulse conditioning and sharpening circuits use Schmitt triggers instead of comparators. Imagine the input pulse train is not sharp enough so we need to

• ## What is the simplest way to make an oscillating signal?July 12

Imagine you have a black box with 5VDC and ground inputs and you have to create one output that is an oscillating signal. What is the simplest circuit that can do so? Can you create a tank circuit with an inductor and capacitor? The output signal wil

• ## Why do some of my signals 'shiver' (have jitter)?August 17

I have a 2 MHz SPI bus but one thing I've noticed that is that some of my signals often 'shiver'. Yes my trigger is setup properly so I don't think the issue lies there. You can see what I mean here: (this is with persistence mode on). This is the cl

• ## How to level shift an analog signal?March 28

I have a sinusoidal input signal (with a swing of 100mV roughly) centered around 100mV (DC). This signal needs to be input to a CMOS inverter. For this I need to level shift my signal around the inverter's threshold voltage. I need a transistor level

• ## Inverting Bistable Multivibrator using OpAmpOctober 12

I am trying to work on a design project and part of the overall circuit includes an Inverting Bistable Multivibrator using an OpAmp. I have designed the circuit which is supposed to have a Upper/Lower Trigger point at +/-2 volts. As the circuit conta

• ## How can I make a linearly tunable 50% duty astable multivibrator?December 19

I want to make an astable multivibrator with a 50% duty cycle that can be tuned with a potentiometer for generating sound, so accuracy is desired. My first thought was to build the standard one with transistors, but that requires 2 resistors that con

• ## Converting a pulse train to a single pulseJanuary 2

Posting my question with a schematic I want to detect AC line voltage using an optocoupler. When i feed the optocoupler input with an AC line, i get a 50 Hz pulse train at the output. Usually this scheme is used for a zero cross detection. But my ide

• ## Function generator for PC soundcardsSeptember 21

I'm in need of a function generator, but I want to avoid buying dedicated laboratory instrument. My idea is to use computer's sound card to create signals (yes, I know that it's not a replacement for the real thing). I'll most likely need just simple

• ## BJT push-pull modificationJuly 18

I am playing with BJT push-pull circuit from a previous question (there are 3 push-pulls with various speedup tricks for comparison): I've recently realized, that's it's voltage follower, so it's not supposed to show rise/fall times shorter than ones

• ## Characterizing Photodiode's angular responseAugust 13

I like to make a simple experiment to characterize the angular response of a particular photodiode. (SFH206K). Current thinking is to use a flat table, use a red laser, turn off the lights, point the laser to the photodiode at various angles and look