Home |
Search |
Today's Posts |
#5
![]() |
|||
|
|||
![]()
* Ball bearing mounted shaft
* Gear drive vernier * 1/4" flatted shaft * Body is 1-1/4" high x 1-1/8" wide by 1-7/8" long. * 15 plate section @ 200 pf with trimmer * 5 plate section @ 30 pf with trimmer * 13 plate section @ 85 pf with trimmer * 5 plate section @ 25 pf (no trimmer) They're priced right ($6 each), but I'm brand new to this, so I want to verify that I can use these. The schematic calls for a 30pF cap. For multi-section caps like these, are the sections isolated from each other to effectively be their own component? Typically they have one set of plates in common (usually the ones attached to the rotating stator). Each section has a second set of plates, insulated from the frame and from the other sections. In other words, can I just hook up the 30pF 5-plate section and leave the rest alone? Yes - use the (common) stator connection, and the connection for that one section's isolated plates. There may be a very small amount of parasitic capacitance between the section you're using and other sections - it's probably not enough to matter in any way. (And for future reference, could I hook multiple sections in parallel to create additional capacity possibilities?) Yes. -- Dave Platt AE6EO Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Electrolytic coupling capacitors | Homebrew | |||
Where do you buy air variable capacitors? | Homebrew | |||
Where do you buy air variable capacitors? | Homebrew | |||
What motors do you use to turn potentiometers and air variable capacitors? | Homebrew | |||
What motors do you use to turn potentiometers and air variable capacitors? | Homebrew |