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0:00 Purpose of a power supply. Parts of a power supply.
1:25 How to read transformer designation
3:09 What is transformation ratio?
4:26 Can you figure out transformation ratio based on coil resistance?
5:07 Why do they use wire of different gauge in transformers?
6:19 How to find the primary coil of the transformer?
8:17 How to figure out transformer's voltage rating?
9:20 Why does not transformer create a short circuit in wall outlet?
10:15 What is reactance?
11:35 Measuring idle current of a transformer.
13:13 Measureing output voltage of a transformer.
14:15 What is a bridge rectifier and how does it work?
15:19 Reverse voltage and current rating of diodes.
16:31 How to check a bridge rectifier?
17:54 Choosing output capacitor rating.
18:57 Why do we need a regulator in a power supply?
19:44 What is a Zener diode and how does it work?
21:07 How to wire a Zener diode correctly?
22:44 Current amplification in regulators. Emitter follower.
23:41 Building a parametric voltage stabilizer.
26:49 Causes of output voltage drop when loaded.
28:13 The final circuit. Explanation.
29:53 Measuring power supply efficiency.
30:43 Parametric regulator using an LM7805.
31:26 Linear regulators of voltage and current.
31:52 Principles of operation of a switching power supply.
32:48 Power supply using a DC-DC step-down buck converter.