Basic electronic circuits.
How do I supply my circuit from the mains socket?
How does AC voltage become DC voltage?
How can you stabilize voltages?

0:00 - introduction
0:25 - requirements
1:18 - The classic power supply
1:58 - RMS and rectification
4:12 - Smoothing the tension
6:19 - Screen out residual ripple
8:56 - voltage stabilization with Zener diode
12:27 - transistor series regulator
13:39 - Electronic fuse
14:42 - Integrated voltage regulators

Attention, please note the small error correction for the video:
   • Fehlerkorrektur 2021 - So wäre es ric...  
but maybe first try to find the error yourself 😉.

Transformer calculation: https://technik.reicke.de/bauelemente...
Stabilization circuits: https://technik.reicke.de/schaltstech...