Questions tagged [delay]
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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What is the best way to use asynchronous ("non-blocking") delay in embedded systems?
Background
I understand, maybe I'm wrong, an asynchronous delay would be one that does not completely take over the CPU.
On the other hand, the synchronous delay remains in a loop, counting clock ...
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Propagation delay stability
I have been asked to find out propagation delay stability for LVDS --> LVDS splitter. I can see the values for propagation delay Min, Typ and Max in the component datasheets. For example part ...
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When power is turned on, pull-down 50K potentiometer to 0 for a few seconds [closed]
Potentiometer is used as a voltage-divider type volume control. I'm thinking of using something like a ne555 timer, a transistor, and a pull-down resistor. Just not sure how i'd connect this all ...
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Cadence Xcelium - Finding first signal to transition to X (don't care)
I have a gate level sdf annotated simulation that is not functioning as expected. After a certain timestamp, I see signals start going XXXX. According to the timing reports, there are no setup/hold ...
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RC timing circuit
I'm reading AOE 3rd edition, book say below:
Here’s how the circuit works: the voltage divider R3R4
holds the (−) input at 37% of the supply voltage, in this
case about +1.8 V; let’s call that the “...
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Delay-on transistors circuit with sharp front
I am new to circuit engineering and have a quite specific task - create a delay-on key with a sharp front, low power supply and high current.
I created a simple key on a single 2N2222 transistor how ...
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How does this delay circuit work?
Just wondering if there is an explanation to how this "delay circuit" works.
(Above screenshot from YouTube video "Fun with Transistors" at timestamp 716s (11m 56s) by HackMeMod)
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DS1110S delay line output signal operation
Given 0-3.3V pulse input to a DS1110S operating on Vcc=5V, how can I know the delayed output signal amplitude?
Is it 0-3.3 like the input or 0-5V?
The Voh data in the table is not clear.
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Delay time in crossbars
I was reading a paper on modeling memristive crossbar arrays. I came across this figure which shows how the delay in the crossbar changes with the crossbar size. The figure on the left is for the case ...
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How to add 30 ms delay after 3.3 VDC rail is ON?
What's the simplest method to add a precision 40 ms delay to a 3.3 V rail?
22/07/2024 update:
Thanks all who contributed. For prototyping, this is what I'll have:
Device is TPS3808G33. At startup, ...
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Get Package Delays from IBIS R_pin, L_pin, C_pin and length
How can I calculate package delays (ps) from the resistance, capacitance, inductance and internal length (µm) of each pin?
When I asked the component manufacturer for the package delays, they just ...
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Can I give different delays for different parameters while using BLE
I'm working with the BLE transmission. I have to transmit 4 to 5 parameters at the same time but with different delays. Can I do this?. Is anyone have any idea? Here is my part of code to transmit ...
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Delay in discharging of the capacitor for sequencing purpose
Our aim is to sequence 2 different power supplies i.e. 5 V and -48 V.
On sequence is first "5 V is generated" and then "-48 V is generated" with 120 ms delay.
Off sequence is first ...
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How to make minimum propagation delay pulse stretcher?
I want to stretch a pulse of 100mV and 1ns width to 3.3V and 10ns width with minimum propagation delay. I found a pulse stretcher in Linear's Application Note 87 document(https://www.analog.com/media/...
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Why do PALs have higher speed than PLAs?
When considering speed I have learned that PLAs are much slower than PALs. As each signal has to propagate through same sequence of gates (in series) why there is a speed difference?
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1ns pulse (comparator) 10ns delay
Given a 1.5 ns pulse, 3.3 V, how does one delay this pulse for a time in the range of 5 ns to 20 ns with maximum jitter 100 ps?
The solution needs to go between the output of a comparator (TI TLV360x) ...
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design strategy of a pulse delay line between two components
There are two components 74ABT04D Hex inverter and UCC5304DWVR gate driver.
74ABT04D Hex inverter is the signal genrator UCC5304DWVR is the reciever of the delayed signal.
I know that my delay line ...
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Simple voltage dependent on/off-delay switch circuit
I have a set of security cameras powered by a solar powered battery bank. (4S5P LiFePO4 batteries charged by a 100W solar panel).
As the voltage varies depending on charge level and how sunny it has ...
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Tightest finite wait loop possible in AVR8
I need a wait delay function with fine grained control of the delay. I came up with the fairly standard way
ldi Rx, N
lp: dec Rx
brne lp
This ...
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A simple delay ON circuit
https://www.homemade-circuits.com/simple-delay-timer-circuits-explained/
I've got a problem with designing a circuit. I've made a box that uses a current sensor module to detect when 230 volt current ...
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Timed momentary switch modifier
I would like to design a circuit that adds a power off delay
What would you suggest, is it possible to solve that basing only on the circuits batteries? Modifier from the market uses own 9V power ...
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Propagation delay of ripple carry adder
I am having a hard time grasping the propagation delay of the full ripple carry adder. Suppose I have n adders and for each adder, the inputs are An, Bn.
Please help me with this question:
As the ...
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RC delay timer to power LCD
I'm looking turn on the power of an LCD screen from a Pi Pico with a short time delay (50-100ms) after the Pico is plugged in. I want to power the screen with VCC from the Pico (5V) and use a signal ...
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RC delay circuit for delay
I want to switch the contacts of a relay after aprox 1 second. I've never done something with a relay before, so please can you check if I understand the specs correctly? This is the one I saw
https://...
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AC delay circuit question
Sorry if it's a stupid question but.. is there any AC delay circuit? All I know is RC and RL circuits but are based on DC current
For example, to delay for a second the triggering of an AC relay
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NE555 Delay On Off Timer Schematic
I'm trying to make a timer that turns on at a certain time and turns off after 3 seconds, i found a circuit in youtube and made it in proteus, but the output is not the same.
Is there a problem with ...
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Why do I need multiple segments to model the RC flight time of interconnect?
Consider a problem where we are interested in computing the delay for a signal to propagate to some load capacitance after a step input on the driving logic gate, and let there be a nonnegligible ...
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Does minimizing stages necessarily give best outcome when designing circuit under a delay constraint?
In the context of digital design, a common situation is to have to design a circuit for minimum energy under a delay constraint. Suppose a given circuit can be implemented with various stages. Is it ...
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Can I use a different channel of a timer at the same time?
I am using AVR128A for a project. It comes with two 16-bit timers (Timer 1 and Timer 3) and two 8-bit timers (Timer 0 and 2).
Timer 1 has two channels whereas Timer 3 has three.
I have all the timers ...
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Why I am getting one clock cycle delay in Verilog case statement?
I have a Verilog code here:
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Delay with timers for a non-blocking delay
I need microsecond/millisecond delay in my project but I don't want to affect the process flow. I am using an STM32G4.
I am using a timer for microseconds delay.
This is the function:
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Delay logic of an optical sensor
I have a simple optical sensor that has 3 pins: Power (5V), Signal (5V when not triggered), and Ground. When the sensor is triggered, the signal goes to 0 V.
I need to constantly delay the signal by a ...
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555 delay timer before powering PCB with 5 V [closed]
I am wanting to know if the circuit below looks correct for using a 555 delay timer to take ~5 secs before applying 5 V to the rest of the board? I'm not sure if I have the correct wiring for it to ...
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Verilog- Why is my state machine output arriving one clock cycle earlier?
I'm writing a Verilog code for a state machine with 4 states. state 0 is buffer time of 1 microsecond. state 1 is trig pulse for 10 microseconds. in state 2, the input is read. If the input is high ...
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Combining two RC time delay circuits to generate both LOW and HIGH pulses with two push buttons
I have come up with the following circuit that can be used to momentarily generate either a LOW or HIGH pulse based on what push button is pressed.
Can you please tell me if there is any issues with ...
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Easy way to delay watchdog POR, but ensure that one line is instantly pulled into reset
We have a CPU, and then several IO expanders. When the watchdog timer expires, we need the IO expanders to go into reset (inputs) instantly, otherwise bad things will happen if they stay configured as ...
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Optimizing Solenoid Control Circuit with FETs: Minimizing Inrush Current and Hold Current Precision
I'm creating a circuit using two FETs. The first FET (U2A) is responsible for controlling the inrush current of the solenoid, and the second one (U2B) is used to maintain the predetermined hold ...
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MSP430 i2c txn buffer not moving second buffer command
In this code i have used B0 I2C module.
Problem - I f i I2C_Txn_byte() to send any command it sends the it the first time but doesn't get in the interrupt ISR again
for Example
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MSP430 delay using timer with polling condition
Need help with this code, it is not creating any delay.
I tried simulating this code in Proteus.
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Designing a Delayed Load Switch Circuit for Voltage Transfer on a PCB
I am seeking guidance for the design of a circuit on a PCB board. The intended function of this circuit is to facilitate the transfer of a 24 V voltage from the input to the output through the ...
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LMC555 delay off timer, M20 motor drive, updated
The goal is to either just give a signal to the motor with momentary switch, or turn on the toggle switch, let 3.7V motor run for a couple of seconds before 440uF is fully charged, after which voltage ...
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"Delay Relay" or better "Ignore Relay" advice
I have an inherited project that is baffling me. (I am NOT an EE.)
TL;DR: need to ignore the signal voltage for the first 45 seconds (upon power-up), then allows all signal voltage there after.
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Which waveform leads the other: A or B?
If you only look at the waveforms A and B below, can you determine which one leads or lags the other?
One person argues that A leads B because the first rising edge of A occurs before the first ...
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Estimation of delay in digital circuit
I found this way to compute the High-to-Low propagation delay. How would this model be modified if instead of Having only a Cload after the transistor, there is a L-shaped RC segment (a low-pass first ...
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How does a processor know the amount of time it should hold the address on the address lines
How does a CPU know how much time it keeps the address on the address line or even data because considering the CPU relies on clock to sync its operations.
I've seen the datasheet of the 6502 ...
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PIC- Analog Digital Converter ( MPLAB - C )
I had a problem with some code where I had to convert analog to digital using my PIC24HJ128GP506A microcontroller. As you may know, the microcontroller uses Successive Approximation for conversion, ...
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Delay 12v impulse then send it to controller
I have a problem with a circuit that would delay me a signal received from an external source.
From the beginning - I need to build a circuit that will give the driver a HIGH signal. This signal is ...
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Why do buffers decrease delay?
Lots of people break up wires into stages to decrease RC delay. This makes sense to reduce the wire L and thus capacitance, but doesn’t the time for the signals to propagate through the buffers add ...
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Theoretical calculation of gate delay
I am currently working on not-gate based ring oscillators and I was wondering if there was a way to theoretically calculate without having to look at the simulation graphs the rise time and fall time ...
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Delay ON signal from sensor (NPN)
I have sensor (slotted IR optocoupler) that has IR diode and IR detector (transistor), where emitter is connected to ground. On device side I have connector with 3 pins - Vcc, GND and signal line, ...
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