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 to calculate the Rise delay of the inverter

how do I calculate the rise delay of the inverter using the "non linear delay model" cell library which has 0.3ns input fall transition time and 0.16pf output load. ? ...
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An COTS solution for delaying a 120kHz analog signal?

Looking for some cheap method of adding a 350uS delay to a pulsed sine wave. It would be useful to emulate a pitch-catch ultrasonic distance measurement setup
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40 views

Can I use a 100-240V AC 5A Time Delay Relay to spread out startup of drives?

My storage enclosure has dual power supplies for failover. Specs for each PSU:100-240VAC 5AMax continuous output power: 250WTotal power on +3.4V & 5.V is 128W mx I need to delay initialization on ...
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34 views

osdelay function stm32

I still work with stm32f407 and I have a question. When I write osDelay function for 2 seconds , it works 5 seconds. How can I fix this extra delay ? This osDelay function in cmsis_os.h library.
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1answer
35 views

Calling a routine every x miliseconds

I'm working on a motion controller using the mbed platform. The idea is to calculate the theoretical position in the move every x milliseconds and then compare it to the actual position from the ...
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1answer
36 views

Series inductor as discontinuity in transmission line

Dual to this question is the following circuit: simulate this circuit – Schematic created using CircuitLab An infinite transmission line (with characteristic impedance \$ Z_0 \$) ends ...
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59 views

Shunt capacitor as discontinuity in transmission line

As in the following circuit simulate this circuit – Schematic created using CircuitLab suppose that an infinite transmission line (with characteristic impedance \$ Z_0 \$) ends upon a ...
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3answers
172 views

12 Hour delay for atmega16a

I am trying to turn on a LED for 5sec every 12 hours. I tried: ...
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1answer
20 views

How to put a delay timer on a micro motor small Area

I am trying to put a micro motor basically as small as I can inside of a 1"or so wide tube like a long fishing plug, I am going to put a small prop or propeller on one end. What I need is to be able ...
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1answer
54 views

fading out effect on a bunch of LEDs [duplicate]

I am trying to make a bunch of LEDs fade out when they are turned off. The task is quite simple for a single LED by using a 1000uF capacitor to produce a time delay as in the following circuit: The ...
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1answer
78 views

Atmega Microcontroller interrupt delay function on button press

I am using Atmega32A and I have 2 LEDs. Here's step by step what I want to do When the MCU is powered, I have one LED lit (PC0) When click on a button (PD6) the second LED at (PC1) is lit and the ...
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40 views

How to control direction AC motor with 555(clockwise-off 5sec-anticlockwise)

How do I control an AC motor direction with a 555 timer monostable delay configuration and a few relays.The nature I want it to be is anticlockwise all the way(with a press of a button) then press ...
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1answer
66 views

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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40 views

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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1answer
36 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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1answer
114 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
521 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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0answers
52 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
69 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
91 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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2answers
90 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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1answer
54 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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0answers
4 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
164 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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89 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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23 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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44 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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21 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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37 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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1answer
89 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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60 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
216 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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85 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
91 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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1answer
75 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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2answers
117 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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2answers
223 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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2answers
78 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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2answers
102 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
379 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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2answers
101 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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0answers
70 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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1answer
61 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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2answers
110 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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1answer
53 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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142 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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2answers
274 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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1answer
178 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
168 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 ...