UNIVERSAL BATTERY CHARGER/DISCHARGER(PLZ help)

[alani_gr 0]

Hi!!I'm new in this forum(and electronics!!)
I want your help to do my homework.....
I bought a UNIVERSAL BATTERY CHARGER/DISCHARGER kit
this is the kit's diagram


I have a few questions.....
Can you help me?

[ante 2]

What

[alani_gr 0]

1)When you push the button how it works?
I need descreption because my teacher will be asking a lot...;)
What you regulate with trimmer?
I have a lot of questions...
this is the manual of kit
http://www.velleman-kit.com/downloads/0/illustrated/illustrated_assembly_manual_k7300.pdf
Plz check it out and tell me about it.
THANKS A LOT!!

[audioguru 35]

To know how it works, first you need to learn about electronics.
Then you should look at the datasheet for the CD4536 timer to learn how it works and what it does.
Then you need to learn about transistors and opamps.

Your teacher should teach these things to you.