ANTIQUE-RADIO-LAB
Welcome, please log-in to participate in this (your) forum, by logging in you agree to abide by the rules of this forum. Until you make your FIRST Login and post, you cannot PM a Member.
ANTIQUE-RADIO-LAB

Antique Radio Forum for Collectors antique-radio-lab.forumotion.com
 
HomeHome  RegisterRegister  Log inLog in  FAQFAQ  PublicationsPublications  SearchSearch  
Can't Log In?: 1st. thing is to clean out your cookies. if that doesn't work , click on Contact field.
(registration and/or Login Help ONLY) For other questions go to our FAQs link above.

Share | 
 

 Home brew low PF capacitors

Go down 
AuthorMessage
FrankB
Moderator
Moderator
avatar

Join date : 2010-11-22

PostSubject: Home brew low PF capacitors   September 21st 2018, 10:26 pm

If you need a low PF capacitor, there are 3 ways I have made them.

1. Twist 2 wires together and cut down until you get the correct PF rating.

2. Use a length of coax cable. The type of coax and pf/ft varies with the type (and sometimes the mfg.) It also varies with the percentage of shield. Mfg. specs. will give you pf/ft rating.

3. Use zip cord, speaker wire or similar twin wires and cut to length for the correct pf you need. You can cut a ft., meter, or whatever unit you want and measure the PF for the length, then cut it to size for correct pf.
Added bonus: I have seen twin wire cord used as spark gaps in TV sets too. 

This type of capacitor is great for tweaking that last little bit to get an oscillator on freq. down to a gnats hair.
Back to top Go down
MEZLAW
Senior Member 75+ Posts
Senior Member 75+ Posts
avatar

Join date : 2012-10-28

PostSubject: Re: Home brew low PF capacitors   September 22nd 2018, 1:43 pm

Twist 2 wires together and cut down until you get the correct PF rating.


Known as a "gimmick capacitor"

All great methods!  Very Happy

PS; we need a "thumbs-up" emoticon
Back to top Go down
 
Home brew low PF capacitors
Back to top 
Page 1 of 1
 Similar topics
-
» In house that doesn't feel like home, Dog, husband and son and fire
» First night Home...
» completion of Birthing Home Extension(Ward Building)
» Home Made Pendulums
» orange, red smoking brew and a Lamborghini

Permissions in this forum:You cannot reply to topics in this forum
ANTIQUE-RADIO-LAB :: Radio Repair Bench :: Hints & Kinks-
Jump to: