⚡ Descuentos en cursos en video - Lleva tu aprendizaje técnico al siguiente nivel y aprovecha precios especiales antes de que termine la oferta. 🔥 Aprovechar oferta ahora 🔥
Automotive electricity

How to activate a 12 volt relay with a single pulse

luis1186pc
hace 5 años
hace 5 años
How do I activate a 12 volt relay with a single pulse? I need to install a power failure to my car. I want to do it so that the cut activates the current flow (be it to the gasoline pump) with a single pulse of 12 volts current; so that there is not a fixed switch connected for more safety, that is enough with a single press and that the relay keeps on passing the current until the vehicle is turned off, at that moment you should need the pulse again to take the step and turn on. Once I saw it installed in a car and this pulse was made to the radio remote, then to turn on the vehicle the radio had to be turned on and once the engine was started and the radio could be turned off and turned on as many times as it wanted since the circuit was giving power until the engine shuts down. As the owner of the car told me, this was done with 2 relays connected to each other, but the one over there didn't know how to do it. Please help me if someone has the answer, it would be to use relays of 12 volts of 5 legs or 4 of 30 amps
Jjn
Jjn
Jjn
5.128
hace 5 años

Google search: interlocking + relay, there are circuits for all tastes and uses.

Responder
hugodesalta
hugodesalta
2.450
hace 5 años

If you would clarify well what you want the result to be, I could collaborate with an idea.

Responder
luis1186pc
hace 5 años

Thanks for your valuable help

Responder
Edurau
Edurau
835
hace 5 años
hace 5 años
It is very simple, normally, with the key you feed the contactor's beret, and it continues like this until you turn off the motor, because you take the key out of position, in your case, with the element you want, you manage to feed the coil, bringing it current, when the coil reacts the contactor, current passes (positive), from the output leg, you feed the input to the coil, (bypassing it), so even if you cut the power that caused the trip, everything still works, when you remove the key Everything stops. luck
JOSE MIGUEL SIRGO PASCUAL
hace 5 años
hace 5 años
Regards Luis. I am going to provide you with an anti-theft system due to a power failure for the gasoline or for the central igniter and I tell you my experience in this regard. I had mounted this same circuit of my invention in a car a few years ago. At that time the cars did not have as many safety systems as now and being a gasoline engine with conventional carburetion choose to mount a solenoid valve for gasoline which fed with this circuit. That way I avoided touching the original wiring of the car that was under warranty and in the event that they tried to steal it, it would start but soon it would stop when I consumed the gasoline from the carburetor's gasket and the pockets would be baffled. The day came when I had to try to steal it and thanks to this circuit they could not take it .. The circuit is very simple. It has a ground outlet, a positive voltage input that comes from the wrench and a positive output for the motor (solenoid valve or ignition) When you connect the key, a beep from the piezoelectric buzzer that is in the car's room will sound and you can listen to it, this serves as a reminder to indicate that you have to press the S1 and S2 buttons simultaneously. I advise you to put a button in a box that simulates a numeric keypad and the other button in a hidden place of easy access. In this way the eventual caco will think that the anti-theft has a numerical code. Once you activate it, it remains connected and when you remove the key from the cylinder it is only disconnected, so there is no possibility of forgetting to activate the anti-theft, since you will have to reset it every time you want to start.
luis1186pc
hace 5 años

Thanks a lot I'm going to do the tests

Responder
Reparaciones similares solucionadas

¿Conoces una solución?

¡Aprende a reparar con estos cursos YoReparo!

4.6
(10)

Curso Localización de Fallas en Refrigeración en Heladeras/Neveras On/Off

Yamil Alarcón
$ 29 USD
$ 12 USD
4.71
(7)

Curso TV OLED y QLED con el Ing. Picerno

Ing. Alberto H. Picerno
$ 29 USD
$ 10 USD
4.64
(45)

Curso Tecnología Inverter - Fabricación de probadores y herramientas

Yamil Alarcón
$ 240 USD
$ 40 USD
¿Tienes una mejor respuesta a este tema? ¿Quieres hacerle una pregunta a nuestra comunidad y sus expertos?
Regístrate gratis