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| Limit switches and reed switches for use in vacuum |
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| RoGeorge:
If you are on a very tight budget, auto spark-plugs can be used as electrical feed-through. |
| i_am_fubar:
Allectra & hositrad for the UK and europe. but pretty much that switch I linked was all I found when I was looking for my application. Most vac specialists sell the same one. Couple of gold plated spring terminals is cheaper option. Take care with handling, gloves are a must to keep clean. Not tried reed switches, but glass with compatible leads should be fine. Crimp or screw, don't solder. Sorted the feedthroughs already? |
| Doctorandus_P:
If you're thinking reed switches, then you're thinking magnetics. Which opens up the road to HALL sensors. If you want them small, they can be bought in SOT23 packages. |
| i_am_fubar:
Be wary of any conventional chips. PCBs become a huge issue with solder, silicone, out gassing... Etc You can get hal effect transducers for UHV, but they are crazy expensive and need external drivers. |
| GasperSB:
No, I haven't selected feedthroughs yet. I first want to define all electrical components and then based on that decide what is needed and what is the most suitable. Yeah, I thought about reed switches because some already have a vacuum inside the glass tube, therefore, the leads could already be vacuum compatible. We have a moderate budget for this project. But I would definitely like to stay away from super expensive components. |
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