In electronics, a delay is an amount of time between two events. For example, the time between input and output of a signal in a circuit could be referred to as the processing time, or the delay. Sometimes delay is added deliberately, as in certain audio effects.
Questions tagged [delay]
528 questions
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How is 10G Ethernet physically possible?
10 gigabit Ethernet means that 10 billion bits are transmitted every second, but I don't understand how this is physically possible (let alone 100G Ethernet). The fastest CPUs today only run at ~8GHz, but even if transmission doesn't require a CPU,…
HaLailah HaZeh
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Transistor Delay
I'm attempting to make an alarm for a freezer so that if the door gets left open, after 1 minute or so, an alarm will sound.
I've got something similar to the schematic below. When the switch is open the capacitor starts to discharge through the…
OdinX
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Why is NAND gate preferred over NOR gate in industry?
I have read at numerous places that NAND gate is preferred over NOR gate in industry. The reasons given online say:
NAND has lesser delay than Nor due to the NAND PMOS (size 2 and in parallel) when compared to NOR PMOS (size 4 in…
Curious
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Audio delay using discrete components
I would like to make a circuit that causes an audio delay using discrete components.
I know I can do small phase shifts using an opamp, but I am looking for something in the millisecond or second range.
Is there any way, at least easily, to do this…
Kellenjb
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Does using only NAND/NOR gates increase circuit delay?
I remember learning in school that one can construct any logical circuit from solely NAND or NOR gates.
First of all, I am wondering if this is how it's actually done: i.e. when Intel makes a CPU, do they build all the registers, etc. using NAND/NOR…
llakais
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11
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Rocket launcher circuit design
I'm building a model rocket launcher with my son. The circuit is very simple as you can see. We want to add a buzzer and a LED/bulb when it is turned on as a warning to stay clear of the rocket.
How would I light the bulb and sound the buzzer…
user1226884
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Delaying a TTL signal
I need to design a circuit to delay an input signal by a given amount of time (around a second, trimmable). The delay should be set through the use of passive components (resistors or capacitors). The input signal is basically a TTL level that goes…
weirdgyn
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My capacitor does not do what I expect it to do
Fixed: The capacitor was defective. It works well with a different one.
I’m new to electronics and need your help.
I built a circuit similar to this one (see comment for the exact components):
I expect the LED to remain on for a short time when I…
Dominique
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Why is propagation delay a function of supply voltage?
In the context of FPGAs, it was brought to my attention today that propagation delay varies with supply voltage. When I asked why this was so, one of the FPGA designers stated that a logic gate is essentially an amplifier (which I do agree with) and…
pr871
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Speed of electricity (signal propagation?) through copper for communications delay
I would like to be be able to calculate the delay for communications
data within TCP/IP networking through cat5e networking cable.
That is a pretty vague request so I will do my best to clarify (it is very likely I am missing a piece of…
jwbensley
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Embedded C - Most elegant way to insert a delay
I'm working on a project involving a cortex-m4 mcu (LPC4370).
And I need to insert a delay while turning on compiler's optimization.
So far my workaround was to move up and down a digital output inside a for-loop:
for (int i = 0; i < 50000; i++)
{
…
a_bet
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Simple power on delay for 3.4v-5v serial device being powered by 5volt VCC
What I am trying to do
I am trying to build the most simple as possible circuit to give a 3.4v-5v serial device a 1-2 second power on delay from the embedded Linux device running at 5v that it is connected to directly to an onboard serial bus.
I…
Dani
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What is the simplest way to introduce a ~ 1 second delay in powering on a 230v AC device?
I have three separate lighting controllers which all have a programmed sequence of slowly dimming lights up and down. These are wired in parallel as I want to be able to turn these on and off with a single switch at the wall (for aesthetic and ease…
Anameranac
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Is this a correct way to have a 1 second delay?
If I have a PIC24 with a 4 MHz frequency. Is it accurate to have a 1 second delay by having 4 million clock cycles?
I made a 1 second delay like this on my PIC24FJ128GA010:
MOV #244, W3
DL: REPEAT #16383
NOP
DEC W3, W3
BRA …
3bdalla
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Delay function in ARM programming
I have just started programming on ARM, I had some experience on AVR but not that much. The question is probably too trivial but the material about ARM is too little on the net... sorry anyways.
I know for implementing delays in ARM we can use…
kasra5004
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