Please keep explanations simple. I'm a newbie. See attachment.
A: What is it?
B: Potentiometer: Has 2 terminals underneath. What are they for?
C: Does this have a negative terminal because of its 'construction? Do other type of capacitors also have 'negative' terminals?
C + D: What is the practical/useage difference?
E: What is it?
F: Capacitor? What capacitance?

 

Hello,

Have a look at the following page:
http://www.angelfire.com/electronic/funwithtubes/How_To-Reading_Codes.html

This is one of the links on component coding page of the EDUCYPEDIA:
http://educypedia.karadimov.info/electronics/datacomponent.htm

As for the potentiometer, the two connection on the top of the potentiometer can be a swtich.
Does the potentiometer click when you turn it completely left?

Bertus

 

a, mica capacitor used in rf circuits,
b, switch on end of potentiometer.
c, electrolytic, yes it is polarized.
d ceramic capacitor, not polarized, less cap than c
e mica capacitor, high stability rf type
f, probably mylar capacitor.

 

a, mica capacitor used in rf circuits,
b, switch on end of potentiometer.
c, electrolytic, yes it is polarized.
d ceramic capacitor, not polarized, less cap than c
e mica capacitor, high stability rf type
f, probably mylar capacitor.

C +D: Both capacitors are 1 uF. Does the 'uF' indicate the capacity? If yes, what is the useage/practical difference? Why use one instead of the other?

 

the electrolytics are mostly used for bypassing and filtering. the ceramic cap at d would work at higher frequencies, as well as having less parasitic inductance.

 

Hello,

What is written on the yellow cap?

Have a look at the following pages:
http://my.execpc.com/~endlr/ceramic.html
http://my.execpc.com/~endlr/electrolytic.html

Bertus

 

Hello,

What is written on the yellow cap?

Have a look at the following pages:
http://my.execpc.com/~endlr/ceramic.html
http://my.execpc.com/~endlr/electrolytic.html

Bertus

I looked at your links. Quite high technical stuff and presently, I don't think critical for me.
Writing on D (yellow cap): BC 105K (digi-key part# BC2668CT-ND)

 

Hello,

On the page of digikey, you can also download the datasheet of the cap.
In the datasheet you will find the following table:

Bertus