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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I am looking for a delay switch with a momentary contact to delay the extinguishing of 2 LED's running on 3-4.5v [on hold]

I am looking for a delay with a momentary contact switch, to delay the extinguishing of 2 LED's running on 3-4.5v. The parameters are: The LED's need to glow for about 2 minutes; The device is to be ...
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1answer
136 views

pulse width modulation

I need help on number one of this practice assignment. I barely learned about this so it is kind of hard me to understand it right now. So any advice or help is appreciated. I want to determine the ...
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1answer
31 views

Frequency Shift a Bode Magnitude Plot

for the 2nd order response of $$1-\dfrac{2\zeta\omega s + \omega^{2}}{s^{2}+2\zeta\omega s + \omega^{2}}$$ I get the plot shown in blue. How do I go about getting the plots shown in red and green ...
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1answer
37 views

how to get delays of a circuit under process corner in hspice?

my circuit is composed of a chain of inverter (delay line), and i want to see how the delay of this chain of inverter behave in process corner? i want to know if the delay line will be still ...
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1answer
86 views

Arduino analogread: neighbor pin noise on ADC even with big delay

I'm reading two analog input values (light sensors, with pull-down resistors) on an Arduino MEGA 2560. One pin is supposed to report the value of 0, while another pin is supposed to report a value of ...
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2answers
48 views

How does a time delay contact remain open

If input voltage energizes a repeat cycle time delay relay coil, and the contact closes thus energizing output to the load for t1, how is the contact is able to open after t1, if it's still energized ...
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1answer
30 views

Improve a simple “magnetic alarm” with a timer, to extend the ringing time

I've bought this simple "alarm" for a door: Which is internally provided with a reed switch; inspecting the internal circuit using a multimeter, I figured out that when the magnet is placed near to ...
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19 views

Propagation Delay Jitter

I am designing a system in which propagation delay will be very critical. I will most likely use a comparator and an analog switch or just an analog switch alone. If the propagation delay is ...
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1answer
41 views

Understanding critical paths

So I'm having trouble understanding critical paths. I have the following example question: Draw the critical path that shows how fast the counter can count: Delays are specified as follows: Delay ...
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1answer
36 views

propagation delay (low -> high / high-> low)

i build a 2x2 bit multiplier circuit where i take a number (a1a0) and multiply it by (b1b0) . and im asked to calculate the time propagation from high to low , and from low to high for every input ...
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1answer
53 views

How to delay a relay closing?

I have a situation where I'd like to delay the closing of an off the shelf relay by ~5 seconds. Assuming it is a 5V coil, and switching 12 V, I'd like the following: t 0:00: 5v applied to input, ...
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0answers
23 views

On Delay Timer FC-31; How to Wire for Power On to start Delay Time?

Have a few FC-31 On Delay Trigger Timers. Want it to perform the following function: Power On (12VDC) -> Timer starts and times out -> Relay Switches. I cannot figure out how to bypass the trigger ...
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2answers
72 views

How can I set a delay in Verilog using a clock?

I'm trying to write an always block that will open a valve and then keep it open for a few seconds and then close it if needed. The valve opens when the input is 1 and it closes when it's zero. How ...
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4answers
301 views

How does a logic gate behave with an input changing faster than its propagation delay?

I am attempting to create a simple logic circuit simulator. I am having a hard time figuring out how does a logic gate behave with an input changing faster than its propagation delay. When attempting ...
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1answer
75 views

FRDM-KL25z assembly delay loop causes reset

I'm currently working on a project using the FRDM-KL25Z development board and programming using Keil MDK-lite (5.14a). What we're supposed to do is create a simple traffic light using three ...
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1answer
59 views

Delay/Disable Output Pin On Power On Using Electronics

I have a module that outputs 3V, has a 'Common' terminal (GND), and a switch terminal. The latter two can accept a toggle input OR a pulse input, and internally it switches on a light. I have a touch ...
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1answer
94 views

Delay/smooth sensors & buttons (not software side)

Is it possible to create long rising/falling delays/heavy smoothings only using capacitors and basic electronic elements ? (alternatively also IC's, but no 555) This is what i know: Capacitior's ...
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0answers
46 views

How do I make a 250 second delay on a PIC16F84A? [closed]

How to write a 250s delay using assembly for my PIC16F84A?
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0answers
54 views

compute delay, area and power consumption in xilinx step by step

I've wrote a VHDL Code for a mux16*1 with 15 mux2*1 in ISE Xilinx and spartan3. now, i want to compute delay, area and power of this code. I wrote this code without any clocks so I cant adding timing ...
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1answer
96 views

AVR asm wait loop explain

Can someone please explain me this code (it is from wait loop calculator), I cannot clearly understand calculation. ; Delay 1 600 000 cycles ; 100ms at 16 MHz ...
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3answers
42 views

How to calculate overall propagation time for circuitry

Below is circuitry including a 2-input NOR gate, a 2 input OR gate with 2 inputs inverted, and an finally going through an AND gate. Through experimentation I measured the propogation delay of each ...
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1answer
35 views

Timed on/off switch problem

I'm doing a small project for my school and the main point of my problem is that I need a simple circuit, that could activate for a fixed time when the mains power goes on. For example: I have a TV, ...
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3answers
124 views

PIC MCU: Software or hardware delay?

Experimenting with blinking LEDs, I learned about creating delays with either a software loop or a timeout from a timer. I know that for a simple blinking LED program, where the processes aren't that ...
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1answer
90 views

AVR: Facing problem with Timers

I need a 13 Microseconds delay for transmitting IR at a 38Khz carrier wave. My chip (ATTiny84) is running at 8Mhz. I cannot figure out what's the problem in my code: ...
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1answer
94 views

Capacitor Delay Circuit

I`m trying to create a basic delay circuit using a capacitor. I am using a momentary switch in series with a 220 Ohm resistor, a H332 100uf 25V rated capacitor and an LED, all connected to a PP3 8.4V ...
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1answer
55 views

What is the effect of this delayed statement in the following process?

Hi guys in the following process how the delayed assignment should be interpreted? ...
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4answers
160 views

Error generating 1 sec delay using timers in PIC32

I have a PIC32MX795F512l and because XC32 doesnt provide an inbuilt delay function, I am using ...
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1answer
783 views

How to wire this delay relay switch

Hello I recently bought this item at ebay and I am not sure how I should wire this. I will power it with a 9 volt battery and the relay will power a pump, this is how they at ebay show how I should ...
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65 views

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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2answers
55 views

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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67 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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1answer
94 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
54 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
79 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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1answer
106 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
358 views

12 hours delay with ATmega16A

I am trying to turn on a LED for 5sec every 12 hours. I tried: ...
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1answer
35 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
80 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
188 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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1answer
138 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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44 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
52 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
199 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
623 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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3answers
86 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
201 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
103 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
100 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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3answers
805 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
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1answer
223 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 ...