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Questions tagged [edge]

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2 votes
1 answer
5k views

Why does this Edge Trigger Work on input of 555 monostable config?

I recently wired up a 555 timer in a mono stable configuration and found that when the trigger was held low for longer than the configured output pulse width, the output would stay high. After ...
Steven Lutz's user avatar
6 votes
4 answers
26k views

How to generate edge-triggered pulse

First, a bit of background: I am just a hobbyist with electronics and have very little formal education in the area. I understand most terminology, but generally require a schematic for me to be able ...
Vale H's user avatar
  • 163
3 votes
2 answers
4k views

Why is D flip-flop positive edge triggered instead of level triggered?

I'm trying to understand this D type positive edge flip-flop: simulate this circuit – Schematic created using CircuitLab I'm having problem understanding why it is positive edge triggered and ...
Victor Lin's user avatar
2 votes
2 answers
7k views

Falling and Rasing Edge Detector

I will use a motor adapter in my design.This motor adapter doesn't have a spice model. Therofore I will design inside structure of this adapter. In this motor adapter has a delay and xor gate part.I ...
engineergc's user avatar
1 vote
2 answers
16k views

How to generate a single pulse using RC circuit from a fixed DC supply without any controller, timer or delay IC?

I have a DC supply (5 V) to turn some circuit on and in that circuit there is a module which uses a specific mechanism (i.e. a 2 seconds width high pulse) to turn on (even if a supply is connected, ...
BetaEngineer's user avatar
9 votes
1 answer
4k views

Is there an intuitive explanation of the classic edge-triggered flip flop circuit?

I figure there must be a way to understand it in terms of the three underlying latches somehow locking each other out, but I'm not getting it. Is there a way to understand the edge-triggered flip ...
Ken Shirriff's user avatar
  • 3,105
0 votes
0 answers
270 views

Turn a positive clock edge into a negative pulse to make a 74LS170/670 register file synchronous

This is a follow-up o Why did they make the 74x170 (670) register file asychronous, no CLK input?. I want to use that "register file" for my project, but I need to make it behave properly as a ...
Gunther Schadow's user avatar
3 votes
1 answer
3k views

What is the purpose of the sharp edges (aka mouse bites, aka perforated breakaway tabs) on the PCB?

I have received an NVIDIA Jetson board this week and it has the following edges near the mount holes: I did a quick search on the internet but was only able to find similar edges on the Raspberry Pi ...
berezovskyi's user avatar
1 vote
1 answer
4k views

PWM with programmable Dead Time

I need to make a circuit that generates a PWM signal for a motor. The motor has 2 inputs - P and Q. They are the inverse of each ...
jdepypere's user avatar
  • 169