Questions tagged [pulse]
A pulse in signal processing is a rapid, transient change in the amplitude of a signal from a baseline value to a higher or lower value, followed by a rapid return to the baseline value. There are many examples of a pulse function including: Step/rectangular pulse, impulse/dirac pulse, triangular pulse, sawtooth pulse, sinc pulse, Gaussian pulse, etc.
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Use of LED driven over-current in a strobe lamp
I'd like a strobe lamp using RGB LEDs as it's light source. I want to pulse the LEDs with very short duration pulses (ideally microseconds or less) at around 100 Hz.
The total on time for the LEDs ...
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How to turn a pulsed signal into a continuous one?
I have a pulse signal at 1 hz which goes high +5V and low 0V. How do i turn it into a continuous one? +5V. i have searched in different places and what i found says that there are different methods ...
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Why pulsed drain current is higher than continuous drain current in MOSFETs?
Why is pulsed drain current higher than continuous drain current in MOSFETs?
In MOSFET data-sheets, pulsed drain current is much higher than (by at least 2x) continuous drain current. What is the ...
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How to generate edge-triggered pulse
First, a bit of background: I am just a hobbyist with electronics and have very little formal education in the area. I understand most terminology, but generally require a schematic for me to be able ...
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How to explain the reflected voltage on the oscilloscope when a pulse is sent through a transmission line with a capacitor at the load?
This is waveform that I got on the osciloscopewhen experimenting in the lab. A pulse was sent through the coaxial cable was used with a capacitor at the load. I have my own idea why is this happening ...
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Convert a toggle switch into a momentary response
I'm working on a project and I need to use a toggle switch to control a device that expects a momentary signal.
What I want is send a momentary pulse when turning it on and off. Ie: swith off to on: ...
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Rising edge pulse detector from logic gates
The circuits I describe are entirely made of 7400 series logic gates (7402, 7404 and 7408 ic).
I'm trying to build a rising (positive) edge pulse detector using logic gates.
The following circuit ...
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Ignore Pulses Less than a Given Width in a Pulse Train
Let's say I have a 5V pulse train that varies between 0 and 75000 pulses per second. Pulse width, let's say, is 5 microseconds. How could I calculate or determine the best way to filter out all pulses ...
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Level shift a 0-20 V pulse to +,-10 V without deteriorating the rise time
I need a fast +,-10 V pulse. I thought I could trigger the base of a switching transistor with my fast rise time digital I/O and get a 0-20 V at the collector and then shift the DC to 0 volt and have ...
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Make a Latching Relay using SPDT Relays
I want to make circuit which can working like a Latching Relay which Hold Current using SPDT Relays.
So i can use this circuit to Pules ON/OFF switch.
Using limit switch when pressed a pulse goes ...
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How to make a TTL low pulse of 100 ns to 1 μs with a simple RC on a 74LS04 inverter?
I APOLOGIZE THAT THIS IS GETTING LONG-ish. There are many updates at the end, and I begin editing the original to bring some finding and WARNINGs into it.
BACKGROUND
I am building myself a Z80 ...
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Trouble with Schimtt trigger settings for varying sinusoidal inputs
To make my problem easier to describe, I drew the above figures (abbreviated as Fig.).
The sinusoidal input comes from a rotating device, from a small alternator(a permanent magnet AC generator).
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Limit Number Of Pulses From 555 Or Similar
I need as small a circuit as possible that can produce 2 pulses (say maybe 200 milliseconds long and apart) when I press a button. My thought was to use a 555 timer and set it up for my desired pulse ...
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Holding voltage high, for monostable 555 timer pulse
I want to know if there is a simple (and cheap) way to make a momentary button (for which we cannot control the time it holds when pressed!) press to virtually hold for about 1-2 seconds.
More ...
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What does the RMS value of a DC current waveform represent?
I understand (or at least think I understand) the math and calculation of RMS values and that it generally is used for representing equivalent power of non-DC circuits, like typical sinusoidal AC ...
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