Questions tagged [vacuum]

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8
votes
3answers
1k views

Does a pickup microphone work in space (vacuum)?

Of course in space there is no sound transmitted via air, so there is no air-borne sound, but there is structure borne sound. This sound can be recorded with a pickup microphone, but do pickup ...
5
votes
2answers
664 views

UHF Tesla coil powered by low voltage?

I want to know if it is possible to use a 2.4 GHz magnetron as a oscillator for a Tesla coil circuit. The idea is to use a oscillating relay-driven step up transformer (12 V to 10 kV) and then charge ...
2
votes
2answers
219 views

Reliability of electronic components in space [closed]

The Tesla car being recently shot into space made me wonder about the reliability of common electronic components in hard vacuum. I'm asking about the kind of components you would find in Musks's car-...
2
votes
2answers
87 views

LED light bulbs in low atmospheric pressure

I have these (https://www.amazon.co.uk/gp/product/B01DBOKZVK/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1) LED lightbulbs. Can I use them in a pressure of ~30kPa (21" Hg vacuum)?
2
votes
3answers
112 views

Lighting up old vacuum tubes and making them turn on/off

I know there were older posts about lighting up old vacuum tubes but I would also like to turn them on and off. I am a complete newbie with no real electronic experience here so please bear with me. ...
1
vote
3answers
957 views

How to power long (30 ft) nichrome wire from 120v AC wall socket

I am working on making a vacuum forming machine, and I need to power a significant length of nichrome wire off of a 120v AC wall socket. I have very little experience in electronics, but I have talked ...
1
vote
1answer
257 views

Power transformer question in vacuum tube circuit

I am having trouble wrapping my brain around this power transformer circuit. I must be missing something very fundamental, so I apologize in advance for that. Can someone explain to me why the center ...
0
votes
2answers
460 views

Does this vacuum motor use DC or AC power?

If this is not the right SE for this, which would be a better one? This is a listing on Aliexpress. I gave the motor DC power at 12, 24, and 32vdc and did not limit the amps. The motor gave one ...
0
votes
1answer
992 views

12V potentiometer

I am trying to control the power of a vacuum pump using a 10k potentiometer with 12v as its input source. I've tried wiring it (with the know facing you)with the first lead as ground, second one being ...
0
votes
2answers
347 views

Max startup current for Vacuum cleaner motor

We used the vacuum cleaner motor 2200W 220v in one dental device (vacuum former) as you can see here: So now one of our costumers said when they used this device the power cable is warmed and when ...
0
votes
0answers
58 views

Will a vacuum tank shield against microwaves?

I am working on an experiment that involves 50-250W of microwave radiation. The antenna will be inside a small vacuum chamber (~2ft Dia x 3ft long) with ~1.5" steel walls. There are a handful ...
0
votes
1answer
58 views

Driving car electrical vacuum pump

I am trying to drive an electrical vacuum pump from a car directly from 12 VDC. Earlier, I succeeded with a different pump just by connecting them to DC power, the other pump (different brand) used ...
0
votes
0answers
74 views

Vacuum sealing MSL and static sensitive components

My small business often builds circuit boards and we have some electronic components that need to be stored in a moisture and static controlled bag. Sometimes we order ICs in large quantities and want ...