All Questions
17
questions
0
votes
2
answers
128
views
Single pulse generator
For my 10V model train's signals and switches I need a ~500msec power pulse (AC; low Amp).
I already have an electronic switch that provides power when triggered. However, the power should be brief, ...
0
votes
0
answers
96
views
Wake up ESP8266 with wall switch
Using LTSpice and uninformed dabbling I've managed to produce positive spikes from a wall switch that I hope will wake an ESP8266 for use to control hue lights. Once awake the IC will debounce, read ...
- 101
0
votes
2
answers
2k
views
Converting latching switch to momentary output
I'm trying to get a latch switch to send a pulse for around 3 seconds or so. The pulse doesn't need to be pretty or precise. The circuit will be used to sound a buzzer when the switch is flipped on. ...
0
votes
0
answers
46
views
Hardware for time-gated signal
Hey,
I am working on a design for an acoustic sensor,
I am applying an excitation field at a certain frequency (a) and recording the response of the sensor (b), however, for my application, I only ...
- 1
0
votes
0
answers
71
views
What is the value of voltage controlled switch to demodulate the PAM circuit
What is the possible value of V3 (voltage controlled switch) and the command to demodulate PAM signal?
- 1
0
votes
2
answers
2k
views
How to make a circuit to pulse an output when a momentary switch is released
I need to make a circuit that has a momentary switch and a light (30mW). When the switch is pressed, nothing should happen, but when the switch is released, I want it to pulse the light for a short ...
- 3
1
vote
2
answers
1k
views
Long (500ms) Pulse Extender
I have an SPST momentary tactile switch and want the pulse, whatever length, to be extended to 500ms (unless of course the button is pressed for longer than 500ms but we can ignore that if we hold the ...
- 177
1
vote
1
answer
3k
views
Convert a toggle switch into a momentary response
I'm working on a project and I need to use a toggle switch to control a device that expects a momentary signal.
What I want is send a momentary pulse when turning it on and off. Ie: swith off to on: ...
- 111
0
votes
1
answer
40
views
Bus Exchange From first Rising Edge
I would like to create a circuit that takes in two pulse trains that exchanges output lines depending on which pulse comes first. Currently I am using an ON 7WB383 and switching the signal manually by ...
3
votes
3
answers
196
views
How do switches respond when more than 10 dial pulses are sent?
Forgive me if this is off topic but this is actually about circuitry design:
My understanding is that electromechanical Strowger SxS switches have 10 "steps". What would happen if 11 pulses were ...
- 373
-1
votes
2
answers
1k
views
Missing pulse detector that will output low when the input is 0v
I need a missing pulse detector that will output low(0v) when the input is 0v instead 0f 5v.
Here is a link to a standard missing pulse detector
http://www.falstad.com/circuit/e-555missing.html
The ...
- 176
4
votes
1
answer
213
views
Component for switching 1000V - 100Amps condenser discharge pulse
I am miniaturizing a circuit used to generate a pulse using condensers into an inductive load. I am a little lost on what would be the best type of component to choose to start the discharge (ie. a ...
- 41
0
votes
1
answer
119
views
Triggering a LED and interrupting it quickly (with a PIR sensor). What do I need for this?
I'm an artist working on a interactive installation. I'm a beginner in electronics and I'm feeling a little bit lost here, can you help me?
I have a 5v circuit with a PIR sensor activating a LED and ...
- 423
0
votes
3
answers
2k
views
Passive circuit to generate a pulse when a door opens/closes?
I've searched a bit here, for example https://electronics.stackexchange.com/search?q=pulse+switch, but I haven't quite found what I'm looking for.
Here's the actual problem: I want to send a signal ...
- 105
1
vote
3
answers
26k
views
Make a Latching Relay using SPDT Relays
I want to make circuit which can working like a Latching Relay which Hold Current using SPDT Relays.
So i can use this circuit to Pules ON/OFF switch.
Using limit switch when pressed a pulse goes ...
- 61