I repeat my statement from post #9: Let us know what the actual intent is, instead of telling us to discover a way to solve an imagined problem.
That load at that voltage could be a trigger for a nuclear explosive device, for instance. Exploding bridgewire is a a well developed method for initiating ordinance, a mature scheme that uses a high current pulse for a very short time.

I am opposed to random individuals detonating unknown ordinance for unknown reasons, by remote control.

If it makes your worried little heart feel any better, trust that I haven’t added any new loads or any detonating triggers, or extra source for voltage or anything. I’ve listed all of the parts involved there aren’t any new parts that I haven’t described. If you can’t figure out what it is and you know how to build nuclear bombs then I feel very sorry for you. Unless you can make a nuclear bomb with the materials I’ve described and nothing else, which you can’t, then you’ve got nothing to stand on. This device switches on and off power, that’s it. The relay needs to be rated for the 50a involved, that’s it. It’s very simple, very common on other vehicles, and doesn’t exist in this market.

I’ve told you how it works, what it’s doing, all of the parts involved, how I plan to use it, and everything. What else is do you need to be satisfied and finally answer a question?

 

You have most certainly verified my suspicions.
I hope You don't hurt anyone.
.
.
.

again with the fear mongering. What suspicions? Speak clearly instead of beating around the bush in vague sensational terms.
How would I hurt someone? I’m switching on and off power to a plane….. besides it dropping out of the sky which can happen for a multitude of reasons, nothing else bad will happen. So you explain to me what could go wrong since I’m clearly missing your point…

 

How would I hurt someone? I’m switching on and off power to a plane….. besides it dropping out of the sky which can happen for a multitude of reasons, nothing else bad will happen. So you explain to me what could go wrong since I’m clearly missing your point…

Because the result of just switching on/off power from a lithium battery pack could result in a fire or explosion depending on the load.

Can you imagine or believe that is a possibility?

And as you’ve gone to great lengths to avoid telling us what the load is because you believe it doesn’t matter - despite what a community of experts say - we have no reason to believe that you won’t or can’t hurt yourself or others.

Good luck!

Note: I can also believe that you can do this without any problems. I just don’t know.

 

I would assume the OP is switching the power on and off to the rotor motors the avionics and the cool LED lights, possible a camera, etc... what else would be in a RC craft?

 

Hi guys,
The TS has asked for guidance on a relay energizing problem.
If you are in doubt about the final usage of his device, you are not obliged to post any help.

The posts that contain your guesswork opinions about the final unknown usage are not helpful, so please refrain from posting such comments.

Moderation

@sherbert1060

 

Because the result of just switching on/off power from a lithium battery pack could result in a fire or explosion depending on the load.

Can you imagine or believe that is a possibility?

And as you’ve gone to great lengths to avoid telling us what the load is because you believe it doesn’t matter - despite what a community of experts say - we have no reason to believe that you won’t or can’t hurt yourself or others.

Good luck!

Note: I can also believe that you can do this without any problems. I just don’t know.

More fear mongering again… do you guys think you’re protecting the world or something? There is no new load. I’ve explained all of this, I’ve basically laid out everything to what I’m building without giving one key piece of information. That’s what the relay is switching, but I’ve already said it stays on the whole flight, it falls out of the sky if it fails, and it’s no new load that it isn’t already seeing. You guys are creating problems out of thin air. If I’m not adding any loads, I’m not changing how it flies or anything like that, there’s no second source, there’s no frequent fast switching of the relay. It’s very simple and I’ve basically explained it, if I’m not introducing any new loads to the plane how am I creating this massive risk? I said it simply, if the relay fails it will fall out of the sky.
You’re acting like I’m introducing some new load that will overload the battery, but I’ve explained several times that nothing like that is new. The battery and the plane all fly as expected, nothing new. I can just switch some of the power off if I want and turn it back on with the radio. That’s it…. Quit trying to make a mountain out of a molehill.

 

I would assume the OP is switching the power on and off to the rotor motors the avionics and the cool LED lights, possible a camera, etc... what else would be in a RC craft?

Exactly, thank you. That’s all I’m doing.

 

Now in post #43 it is explained that the TS is switching off power in a model pane. That is a simple task that can be done with a simple servo and a simple cam operated switch. Not one bit of additional electronics, just a set of contacts of adequate size and rating, held closed by a cam that is moved by a standard small RC servo. The only cautions will be to assure that the contacts are adequate to carry the intended load for the intended time, and that the mechanism can hold up under whatever vibration may be present. The cam must have a bit of free-play so that the contacts can snap open when the servo rotates to open them.

Adequately stating the need leads to a more useful answer.

 

@sherbert1060 Have you seen this link?
https://www.electroschematics.com/compact-rc-switch-circuit/
It is basically what I described in post #33.
I gathered from your post you are using a toggle switch on your transmitter.?

 

I thought about this a lot but it seemed a little rudimentary and I figured there was a better way to do it electronically but this is an option as a fall back.

Of course there is, you have been told about it and rejected it. One or more MOSFETs can do that switching, while requiring no appreciable current from the PWM circuit. What do you think a sold state DC relay is? MOSFET(s) and an optical coupler, which is not needed for your application. You need a diode, capacitor, and probably several MOSFETs in parallel. That is it. It is simple, efficient, lightweight, and cheaper than the other things we have talked about.

 

Why use an antique mechanical relay? Of course a Mosfet can apply or disconnect 50A.