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 can I calculate time constant and charge time of RRC circuit?

This circuit is part of my time delay circuit. I want to calculate exact value of delay time. Please help me. simulate this circuit – Schematic created using CircuitLab
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Transfer function and Pade approximation

Why these two figures are different from each other?[Figure 1, Figure 2] Thank you for your helps. Good evening.
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110 views

Timing chart of waveform with a given delay different than zero

Entrance C functions from a block mark with 50% of life cycle. Do the timing chart of waveform A, B and C when we have delay D seconds. The case is: C has a square pulse with 50% life cycle. Each ...
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29 views

Delayed Overcurrent Protection

I trying to find a solution for a problem that I have with a system I am responsible for. The system runs on radio control, the problem we had is one of the radios got stuck on transmit and blocked up ...
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34 views

Inconsistent behaviour from SA555

So I was "hacking" (I'm not really in a level to call what I'm doing "hacking") a small device and it just can't help but produce a small voltage spike when power is first turned on; registering at ...
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60 views

CMOS inverter delay

Please tell me whether my thoughts on the question below is correct or not. How does the delay of a CMOS inverter decrease when we increase the supply voltage? What I thought was if ...
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3answers
480 views

How do signal reflections work?

How do reflections work, physically to the charge carriers level? Considering a square wave generator connected to a long, open cable, I've made a quick chronological diagram of the propagation of ...
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37 views

Interbytetiming ,kwp2000,Fastinit

How to set interbyte delay, I should be able to get 25ms low and 25ms high and later the data bytes at 10400 baudrate, implementing kwp2000 protocol. When I send bytes ...
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3answers
63 views

Linear Technology LTC6994-2

In my search on building a simple voltage controlled gate delay i stumped upon this chip. After reading the datasheet i'm still very uncertain if this is the ic i need. From what i understand: it is ...
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2answers
51 views

How can I get this PMOS to turn off?

I have a 2V regulator circuit which is used to drive a microcontroller (EFM32G222F128). On the output of this regulator I have a delay switch type circuit (see image below) which is used in order to ...
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81 views

time delay in counter

For the ring oscillator shown in teh figure 1 , A ring oscillator consisting of 5 inverters is running at a frequency of 1 MHz. the propagation delay per each gate is? One possible solution for ...
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44 views

Propagation delay from a graph

I'm in the edX class and failed on all my three attempts on one of the questions. Clearly my reasoning is wrong, but I can't figure out where exactly. I would really appreciate if somebody could help ...
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3 views

End to end delay distribution in WSN

I am trying to find the best way to measure the end-to-end delay (from sensor to sink), when using wifi connection. I would also need to send sensor data from my Iphone to the pc, and measure the ...
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3answers
88 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 ...
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67 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 ...
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14 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 ...
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39 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 ...
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17 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 ...
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33 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 ...
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70 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 ...
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43 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 ...
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2answers
186 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.
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76 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 ...
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1answer
63 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 ...
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70 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 ...
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104 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 ...
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172 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 ...
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59 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: ...
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39 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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66 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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3answers
294 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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86 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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64 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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50 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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88 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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51 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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124 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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199 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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131 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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148 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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89 views

falling delay inverters VLSI CMOS

How do I obtain the falling delay driving by signal A: Data: ...
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76 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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133 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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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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226 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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83 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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376 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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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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122 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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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.