Emag"crono mode"

[Wynken]

I had an interesting idea today. After looking it up, I realized I'm not the first one to have it(I found this post by nippinout). If I missed some other big thread about this, umm... delete this or something.

The idea is this, add a "cocker mode" to the emag so that whenever the trigger is pulled, the solenoid is pushed in. It stays that way till the trigger is released. It seems like this would do exactly as if you had the trigger rod in, and would allow you to crono correctly.

What I'm wondering... is this logistically possible? Will it fry the solenoid being activated for several seconds? What would it do to battery life(I'm guessing it woudln't do good.)

Anyway, if it's feasible, it seems like a solution to the chronoing problem for all those like BlackVCG who don't have trigger rods.

-Wynken

[Dayspring]

Yes. It WILL fry the solenoid. Tom tried something like this. What he is looking into is something like that, but pulsing the solenoid so it doesn't over heat.

[Wynken]

Well, that's a pretty definitive answer.

It seems like you would have to keep a PWM at almost full power in order to get it to stay open all the way. But, I bet Tom'll get something figured out.

-Wynken

[athomas]

Not only will it overheat the solenoid, but the higher current draw would also cause the battery to discharge rather quickly.

[Miscue]

It can be done with pulse modulation. You don't send continuous power to solenoid.

[Dayspring]

You don't say...

Originally posted by Miscue
It can be done with pulse modulation. You don't send continuous power to solenoid.

[Miscue]

Whoops. I overlooked your post.

[Wynken]

I've never looked, but what are the solenoids rated at? I'm guessing they aren't 18V. Well, if they aren't then pulse modulation might work. But if they are I can't see how it could work.

-Wynken

[11_Mile_TMaster]

Indeed, automated sprinklers operate on solenoids... And they operate as such off AC, because it is a pulsing sort of voltage... and they are open for VERY long periods of time compared to, well, the time we're holding it down to chrono.