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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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: ...
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31 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, ...
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32 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 ...
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84 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 ...
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58 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 ...
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36 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 ...
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28 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)
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69 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 ...
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42 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 ...
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73 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 ...
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116 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 ...
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44 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 ...
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1answer
88 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 ...
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1answer
58 views

falling delay inverters VLSI CMOS

How do I obtain the falling delay driving by signal A: Data: ...
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1answer
72 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. ...
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3answers
99 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 ...
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66 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 ...
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2answers
103 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 ...
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1answer
48 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 ...
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85 views

Simple delay functions for TI Launchpad?

In Atmel Microcontrollers, there are simple delay functions such as __delay_ms() and __delay_us() found in ...
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3answers
882 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: ...
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1answer
60 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 ...
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55 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.
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4answers
315 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 ...
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1answer
77 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 ...
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200 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: ...
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104 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?
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146 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 ...
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44 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 ...
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83 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. ...
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78 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 ...
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1answer
115 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 ...
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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) ...
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81 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. ...
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1answer
146 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 ...
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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 ...
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Hold switch trigger delayed

I have a small battery driven, microchip controlled project where I use a rotary encoder for toggling/setting various settings. Mostly software based as that is what I'm more familiar with as of yet. ...
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2answers
97 views

Variable delay element [closed]

This code if compiled has an error appear with (k) symbol. I need to implement this simple block. k (that represents the amount of delay) will come to my block from the previous block. ...
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1answer
231 views

Understanding max and min propagation delay in flip-flops

I've been working my way through Digital Design and Computer Architecture, but am very confused by the equations for time delay - what each of the variables are, and how to conceptualize these ...
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2answers
305 views

How to trigger reset at long press of button

I am trying to make a button control on/off and reset all in one, but I can't quite get my head around how to design it. It should basically function like a PC power button. If short press it's ...
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117 views

CTMU Time Delay Measurement Not Working - PIC24F16KA302

I'm trying to use the CTMU unit in a PIC24F16KA302 in an impedance measuring system. I'm applying a sinusoidal signal to a component and creating a voltage and current signal which I can then use to ...
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849 views

Arduino-Arduino RF Communication, key needs to be pressed several times

I'm communicating two Arduino i.e. Arduio UNO as sender & Arduino Mega as receiver via RF-433 MHz transiver module. Communication is sort of working but there is one problem. If I want to send a ...
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553 views

Signal LED delay mini-circuit

In making a breakout board for an SMD Bluetooth module, I realized that simply wiring LEDs to your signal lines is insufficient for a decent visual indication, as signal duration is too short to be ...
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1answer
119 views

How can I simulate contamination delay in VHDL?

Propagation delay is simple to implement: Out <= '1' after 3ns; I tried to add contamination delay as such: ...
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1answer
155 views

Transistor as a mute switch, odd rise and fall times?

I need to mute (soft mute, no clicks and pops) an audio signal while routing it using a mechanical relay. I use a 2N5089 high gain NPN with a grounded emitter, collector to the signal output and the ...
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1answer
105 views

protecting a sensor component from high spikes when switching power on

I have an electrical scooter which has a "Hall Effect Sensor" in the handle-bar, measuring the magnetic flux to determine the amount of "gas" or gauge. This sensor tends to burn out quite frequently. ...
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117 views

Simple doorbell delay (add-on)

We have a new office doorbell with a pushbutton that rings a buzzer for as long as the button is held down (i.e. a simple circuit that is closed by the button). The buzzer sound is really "angry", and ...
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4answers
235 views

In CMOS, can I assume the delay of a multiplexer is negligible compared to the delay of an inverter?

Let say I have a ring oscillator, and I modify the ring so that the output of an inverter is connected to an input of a 2-to-1 MUX, and the output of the MUX is connected to the input of the next ...
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3answers
134 views

Dealing with digital circuits and their associated switching speed?

When designing a digital one-minute counting circuit I came across a difficult problem. Basically, I designed the circuit to drive the (normally HIGH) clock of the 10s slot low if the 1s slot's ...
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143 views

How to measure the delay of one single inverter in ASIC?

In practice, is it feasible for a chip manufacture to reliably and accurately measure the delay of one single inverter in ASIC? If it is, how can one go about doing it?