PDIB's Making MODs!

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Rossum

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No, actually that is one part of a discussion about designing boost converters. Just some light reading to stay up with current trends. Adding a MOSFET as a switch doesn't require delving into anything anywhere near this level. That would be straightforward and simple, but then it wouldn't be a pure mech anymore.
Yup, you'd then have a transistorized mod. This wouldn't eliminate the need for a switch entirely, but your switch would then only have to control the minuscule amounts of current needed to charge/discharge the gate of the MOSFET, meaning you could use darn near anything as a switch and it would last essentially forever. I was stewing on this too the other day. 100A MOSFETs are available for under $5.00 and have ON resistances around 5 milli-ohms or less.

Has anyone calculated the resistance of the existing mechanical switches (by measuring voltage drop across them under load)?
 

cecsystems

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Count me in on the silver as well. :D

yeppers... when mine is built I'd like any and all the jibber jammerz LVD (low voltage drop) upgrades available (at the time) High function and beauty all in one... OMG :vapor:
 
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Bimini Twist

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So, a question for my peeps. Who would be willing to pay ~$15/pc for solid sterling silver fire button contacts? I'm thinking of ordering some and modding them up to work nicely in the existing button assembly. Basically, it would replace the screw-in "contact" part of the button assembly. Between cost+shipping and modding time to make them work for us, they would cost about that much. This, I think, would be a luxury add-on. We certainly don't all need one; but some of us might just think it's the pig's chin whiskers*. I think I've got it all figured out as to the way to make this work, and, as always, the solution is amazingly simple and tidy. Not a sure thing yet; but it looks promising (in the spacious yet eerie expanse of my mind).





*that's good . .. . . right?

OOOOOOHHHHH! OOOOOOHHHHH! OOOOOOHHHHH!

Horshack.jpg
 

Treebeard

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Doing a little experiment with the materials I have on hand. Wanting to approximate using a threaded silver rod plug at the contact end of the battery assembly. Curious as to how it tarnishes, and how it performs when tarnished. This is a length of my Ag/BeCu spring material. Small contact surface area, so maybe it'll prove good/bad faster. Who knows what kin'a silver this is. So, real scientific, am I. When I first assembled this and fired it up, it singed the hair off my eyeballs and it made a toot-toot sound like a freight train would. (that, however, seems to be the case with any fresh contact assembly)

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Is this the stock aluminum screw? Did you use the nylon washer on top of the wire? I have some solid silver wire that I use on my speaker jumpers. What's the downside to adding the wire to the screw?
 

timk

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So, a question for my peeps. Who would be willing to pay ~$15/pc for solid sterling silver fire button contacts? I'm thinking of ordering some and modding them up to work nicely in the existing button assembly. Basically, it would replace the screw-in "contact" part of the button assembly. Between cost+shipping and modding time to make them work for us, they would cost about that much. This, I think, would be a luxury add-on. We certainly don't all need one; but some of us might just think it's the pig's chin whiskers*. I think I've got it all figured out as to the way to make this work, and, as always, the solution is amazingly simple and tidy. Not a sure thing yet; but it looks promising (in the spacious yet eerie expanse of my mind).





*that's good . .. . . right?

If it is believed this would cut down or even eliminate regular maintenance, I would buy for $15. :)

Edit: Yes, count me in please is what I meant. :toast:
 
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