I don't think so. In all of my years, I have never encountered a variable capacitor that works that way.A tunable (rotating) capacitor consists of plates that are spaced apart by some measure. The spacing is what derives a given capacitance. By rotating extra plates in-between the stationary plates you reduce the spacing, thus changing the capacitance.
Been a very long time messing with one of those caps. Yeah, I must agree, the rotary plates are one lead and the stationary plates are the other lead. Thanks for covering that.I don't think so. In all of my years, I have never encountered a variable capacitor that works that way.
In every case I've ever seen, the rotating plates of the capacitor (i.e., the rotor) acts as one terminal of the capacitor, while the stationary plates (the stator) comprise the other terminal. As the shaft is rotated, the plates on the rotor overlap either more or less with the stator plates, changing the capacitance between them.
Wikipedia has a good article that explains.
The MAXIMUM value of capacitance is normally what is specified for variable capacitors. Many makers also specify a minimum value range, which is less predictable. But in all cases the minimum value is not zero. In many cases the minimum is between 5% and 10% or the maximum.What is the minimum value of capacitance of a rotating capacitor ???
Amazing things like that in your post?:If we can get beyond Politics
Americans can do amazing things.
LET America be Great Again.
Author: My wife.
Oh, I see, Politics are guilty!A tunable (rotating) capacitor consists of plates that are spaced apart by some measure. The spacing is what derives a given capacitance. By rotating extra plates in-between the stationary plates you reduce the spacing, thus changing the capacitance. So the minimum value will be either (I'm not sure which) with the plates fully engaged or fully extracted. The varying overlap of the plates (stationary and rotary) is what changes the capacitance value.
Some have some sort of material such as plastic, some are "Air Core" meaning nothing between them except air. Whether they're just air or plastic - or some other material - these are just some types of capacitors. In many cases the material separating the plates has an affect on the capacitance value in both farads (micro - nano - pico or other) and voltage capability.I have a 13 plate ,1/4" shaft, 5? to 50 pf. & 5/16" sq. 3 plate 1 to 10 pf., plastic seperators, slotted shaft.
|Thread starter||Similar threads||Forum||Replies||Date|
|T||change the voltage range or lower the minimum voltage||Power Electronics||1|
|What's minimum turns for 220v 50hz isolation transformer||General Electronics Chat||47|
|E||Finding the color code value given the maximum and minimum value.||General Electronics Chat||13|
|S||need minimum resistor value for max led brightness||Analog & Mixed-Signal Design||11|
|Confused with questioin (minimum value for total impedance)||Homework Help||1|
|change the voltage range or lower the minimum voltage|
|What's minimum turns for 220v 50hz isolation transformer|
|Finding the color code value given the maximum and minimum value.|
|need minimum resistor value for max led brightness|
|Confused with questioin (minimum value for total impedance)|
by Luke James
by Jake Hertz