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Electronics on the floor: Another sliding variable capacitor

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Another sliding variable capacitor. Goes up to about 30pF.
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Опубликовано:

6 сен 2024

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Комментарии : 17

@joeshmoe7899 3 года назад

Did this with 2 beer cans. Split one, and slide it over the other. Wire on both ends. 10 to 400pF. Cans already have an insulating wrap.

@tvdylan 10 месяцев назад

400 pf ! pretty good ! is it the general rule that the more surface area the more pf's we get ? i imagine the two cans slide nice n close to each other too !

@bobhs1605 5 месяцев назад

Really ? They have an insulating wrap? What about after heating them up to remove the ink?

@bobhs1605 5 месяцев назад

And would sanding them make a difference?

@sirsteamtrain7913 3 месяца назад

@bobhs1605 sanding them would remove the incredibly thin plastic coat they have on the inside.

@MidlifeRenaissanceMan 3 года назад

You’ll find that 20mm grey conduit slides nicely inside 25mm grey conduit. Orange conduit is a little thicker and so 25mm slides inside 32mm Using the 25mm grey conduit on my 3m wide 40m mag loop, I would blow holes with RF arcing in the conduit with as little as 30-40W

@DomeArmin 21 день назад

only from 5pF to 24pF ☹ I wanted to build an AM loop antenna -- but this method is not enough with it's insufficient super-tiny capacitance. 🙁

@rcpilothamradio4503 3 года назад

Outstanding HB9DHH 73 from Rene

@paulromsky9527 17 дней назад

I am in the States. Can I use Aluminum? We can't buy Aluminium here.

@sadunnakipoglu9471 3 месяца назад

Thank you so much for this video.

@Esteban_Pascazzi_LU8ATK 3 года назад

For loop your yellow copper wire is very resistive loosy....replace a copper wire with copper tape or aluminium foil....remember 10 cm this copper wire degrade eficience in your loop antena....sorry my english is very bad