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.

learn more… | top users | synonyms

0
votes
3answers
39 views

Delay function using timer/counter 1

i have made a function called _MY_Delay() which use 16bit timer/counter1 in ATMEGA16 , and used this function to blink a LED . the problem is i didn't work and i don't know the reason , here is my ...
3
votes
1answer
49 views

adding two 64-bits number with m-bit carry ripple adder and multiplexer, a questions?

I ran into a question from computer architecture class. The professor says that for adding two 64-bit numbers A and B we use m-bit carry ripple adders and multiplexers such as following: and that ...
0
votes
0answers
8 views

how to make parameters as input port in Matlab?

I want to calculate BER in a communication system in Matlab simulink. I have used from "error rate calculation block", which accepts the transmitted and received signals as inputs and the output is ...
0
votes
0answers
28 views

P-Channel FET Switching Time

I have a question about the circuit shown below. Specifically, I am looking to calculate the time that it takes to fully enhance the PFET and activate 3V3_SW1 after the control signal transitions ...
0
votes
0answers
11 views

CMOS: Getting time delay and power dissipation of a huge circuit (e.g. multiplier)

Our design project is to build a carry save multiplier in CMOS. We already have the spice netlist and layout. Problem is, we are also asked to get the timing delays such as the propagation delay ...
-2
votes
1answer
30 views

Finding delay of circuits

I have an AND gate having two input. 1st input is constant 0 and 2nd input is circuit x . Now suppose the AND gate has p second delay and circuit has q second delay. Then what will be the delay ...
1
vote
1answer
66 views

Close circuit after a couple of seconds

First post on this site, sorry if it's too basic. I'm learning to interface with a particular chip which has a GPIO pin. I'm using the GPIO for input with a pullup resistor and a switch between the ...
0
votes
0answers
32 views

determining appropriate group delay for FIR filter in matlab

I am trying to take a signal where the frequency with the max energy is about 180Hz and use a filter to distort that frequency by using a group delay. So far I have had no luck with matlab commands,I ...
2
votes
2answers
152 views

Delay in 4-bit ripple carry adder?

In pic below I have drawn a full adder and mentioned their delays, please help me to verify my answer.
0
votes
0answers
64 views

digital delay, program or ic?

What options do I have if I wish to delay a digital PWM signal with a signalling speed of about 2MHz? The delay I wish to apply to this signal needs to be in the range from 0 - 2000us which must be ...
0
votes
1answer
46 views

Buzzer not working with delay avr atmega162

Hi I have got a problem that will be simple to you guys but i am newbie so its difficult for me to get things done correctly, I Have buzzer interfaced with PinC0 of atmega162 , with crystal 12MHz ...
2
votes
1answer
69 views

How to simply introduce a short (2ns) delay on a line?

We found a race condition in one of our production circuits. A CPLD chip acting as address decoder plus a couple other functions, receives address and data signal over two buses. A peripheral device ...
2
votes
2answers
95 views

Design of a Five Second Kill Switch

I think I have a challenge for you smart souls on here, who donate your time by answering all of my terrible questions. I have to design a switch that completely shuts off a system when it is ...
0
votes
2answers
126 views

Circuit Requirements for a 30 min continuous on off cycle

I would like to build a circuit (preferably using components from old common electronics like a VCR or whatever) that continuously cycles on/off in ~ 30 min intervals. Input voltage is from a 12v ...
2
votes
2answers
50 views

Verilog: Change a Certain Delay According to the Current Output

For Verilog 2005, when writing the test bench, is it possible to create a lookup table of delay values, and then assign a certain value in it to be the delay of some procedural block? For example: ...
0
votes
0answers
38 views

Floating simulated inductor. Simple implementation?

I would like to build an analog delay line (basically many stages of LC filters). To get a long enough delay I need pretty big inductors, in the 500mH+ region and I need many of them (at least 16, ...
0
votes
2answers
55 views

Trigger Signal Lockout Circuit

I have been trying to design a trigger lockout circuit and I have been having some difficulties. The circuit is taking as an input a 3.3v pulse. These inputs can happen randomly and what I would ...
2
votes
3answers
209 views

CMSIS and sub millisecond delays

We are running FreeRTOS with CMSIS. Is it possible, using CMSIS on STM32F3 Discovery board, to have periodic tasks running with periods less than 1 millisecond resolution? We want to run tasks at 400 ...
0
votes
2answers
72 views

Antenna phase shift

My question is regarding RF measurement systems which use antennas signal arrival time as principle of operation e.g. GPS. It is known that impedance of well-matched antenna immersed in lossy ...
0
votes
0answers
57 views

Simplest possible circuit to pulldown a 12v line with delayed off? With caveats!

I'm trying to pull down a low-power automotive signal that normally floats high. The trigger is another line going high (12v brake light). I want a delayed off of a few seconds. The usual simple ...
0
votes
1answer
43 views

Comparison of 180nm and 65nm CMOS technology in consideration of delay, power and energy consumption

how would each of them typically compare with respect to delay, power and energy consumption? (Used in digital circuits)
0
votes
2answers
83 views

Can you set up a monostable 555 timer so it reverses the output?

I would like to make an alarm that goes off about 1 minute after it has been triggered. To do this, I want to delay the circuit using a 555 timer in monostable, but I can't do this as they turn it on ...
0
votes
1answer
47 views

Timing Delay Error

I am new to embedded system programming. I am working on clock using 8051 timer and interrupt.The delay is perfectly of 1s but when I run my clock with computer clock I loses 3-5s in 10min.I have try ...
0
votes
0answers
108 views

capacitor value to add delay in circuit

I am using a relay to turn on/off a 12V motor. I wanted to add a delay in the circuit by adding a capacitor across the relay. I wanted to know what value of capacitor should I use to introduce a delay ...
1
vote
2answers
156 views

Can a tank circuit store energy for a simple AC system?

If you take the circuit below, with the switch closed, assuming the Tank circuit is tuned to resonate at the same frequency as the source, then I would expect the tank to become charged, and the ...
0
votes
1answer
86 views

What kind of time delay switch to choose to reverse motor for just a couple of seconds

I would like to know the following: I have a motor driving a lead screw which transports a part either up or down. When going down and something comes in the way a switch gets triggered by the ...
0
votes
1answer
131 views

VHDL delay mechanism

I have difficulty understanding how the delay (mainly inertial delay: AFTER) mechanism works in VHDL. I'll start with this: target <= waveform AFTER 3 NS; As ...
0
votes
1answer
83 views

falling delay inverters VLSI CMOS

How do I obtain the falling delay driving by signal A: Data: ...
0
votes
1answer
73 views

Blocking/Nonblocking with Delay

I am now confused by one piece of Verilog Codee, its kind of testing the blocking or non-blocking assignment features that combination with Delay model. ...
0
votes
3answers
118 views

Double tap push button which resets if not pressed twice in quick succession?

I'm new to electronics, so don't know where to begin - I'm trying to create a push button which needs to be pressed twice in quick succession, to actually power on a device. Pressing it just once, or ...
0
votes
0answers
106 views

Simulation to find worst-case delay path

Assume there is a combinational logic function implemented by a CMOS logic inside (1 Pull Up network and 1 Pull Down network). From the intuition of RC Tree elmore delay analysis, we know that input ...
2
votes
2answers
182 views

Making variable delay routines

I know how to write accurate delay routines in assembly to run on a PIC microcontroller. The problem I have is creating delays of a arbitrary length. What I want to do is accept some data which ...
0
votes
1answer
73 views

In Altium Designer, how can you set the autotracer to route all traces with as equal lengths as possible?

Note that this board does not require a power or ground plane, since it's just used to bridge two boards. I want the traces to be as equal in length as possible in order to minimize any difference in ...
0
votes
1answer
249 views

Simple delay functions for TI Launchpad?

In Atmel Microcontrollers, there are simple delay functions such as __delay_ms() and __delay_us() found in ...
5
votes
3answers
995 views

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: ...
0
votes
1answer
105 views

Clock / timer activated 2 second voltage timer for wiper motor project

Ok, I need a 12 volt voltage timer using clock or timer for a wiper motor. I am working on a project in my garage. Simply put, I am wanting to use a wiper motor that will open and close a spring held ...
1
vote
0answers
111 views

How to calculate average delay time of circuit having several possible transition states

Is it possible to calculate average delay for all possible states directly without calculating them individually using Xilinx or with Cadence.
1
vote
4answers
371 views

Which circuit to use to automatically turn off the backlight of a GLCD after 30s?

Have you ever seen smart phones automatically turn their screens off after a short time to save the power? I want to do it on the back light of my GLCD (ks108sed). Descriptions: Back light will ...
2
votes
1answer
98 views

Combinational logic delay is greater than clock period

Suppose you have a combinational circuit between two registers driven by a clock. What will you do if the delay of the combinational circuit is greater than your clock signal? (You can’t resize the ...
0
votes
3answers
404 views

How can I add a power-off delay to this circuit

This may seem simple but I am trying to learn EE. In the below circuit, how can I add a delay when the button is released the relay will stay energized for approx. 5 seconds. My Circuit: ...
-1
votes
2answers
137 views

How to ADD a delay to coaxial tv signal?

Is there a way to add a delay that can be increased/deceased as required to a coaxial tv signal?
0
votes
1answer
184 views

Determining Pipeline Cycle Time

I'm having trouble figuring out how the longest stage of a pipeline is calculated given the following: "Your processor has a 3-stage pipeline where the delay is 26ns through the first stage, 40ns ...
0
votes
0answers
52 views

Calculating most likely time delay from multiple phase-shifts

Suppose you have a reference signal, which is sinusoidal. This signal travels in a path that adds time delay and returns to be compared with the original. The result is a phase shift between the ...
1
vote
0answers
104 views

Pulse reset line with long press of a button

This question is a variation of How to trigger reset at long press of button. Namely, I need to pull down a reset line with a short pulse of X length, if a button is pressed for Y>=X or more seconds. ...
0
votes
0answers
95 views

Mono-stable trigger circuit (monoflop) with start delay

I'm sorry if this question is a duplicate, but I'm not sure about the right terminology (in english) about my problem. I've got a device which operates at 13.5V. I want to switch this device with a ...
2
votes
1answer
127 views

SN7400N unusally high propagation delay

For a small lab project I was asked to measure the propagation delay of a SN7400N NAND-Gate. In order to do this i connected one input pin to 5V and the other one to a clock running at 1 kHz. I ...
5
votes
2answers
4k views

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) ...
1
vote
2answers
98 views

Latching circuit that delays the on state for different outputs

First, I'm very inexperienced in designing circuits like this, so I apologize if this seems trivial. I'm basically trying to create a startup sequence effect, where LEDs turn on in a delayed order. ...
0
votes
1answer
159 views

Simple question (I guess): 555 timer

I want to know if it's possible to have a push button so that when it's activated, it turns on my 9 volts circuit for 10 minutes and then turn it off. Also, I don't want this circuit to consume ...
4
votes
3answers
2k views

Software delay vs hardware timers

Working with a micro controller, on which exact conditions should we choose between Hardware timers and Software delays on an Embedded Controller? I have seen articles which do emphasize on use of ...