Questions tagged [delay]

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.

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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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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 series). According…
Curious
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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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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 /…
llakais
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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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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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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 fundamental…
Baldrick
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Why is the power-on delay much shorter than the RC time constant in this MOSFET circuit?

I want to delay power to a 12 V load by approximately 3 seconds after the 12 V supply is connected. I tried the circuit shown below using a BC337 and an IRF9540N P-channel MOSFET. I chose the 100 kΩ resistor and 33 µF capacitor because their RC time…
aTalha Sağlam
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Analog Delay Circuit without Capacitor?

Is it possible to create an analog delay circuit without a capacitor in conventional circuitry? The vast majority of analog delay circuits encountered by students nowadays almost always make use of some sort of capacitor charging or discharging…
Runsva
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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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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…
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