The second video looking into switching current regulation, specifically utilising a comparator with hysteresis on the input, aka: direct current control. After proving the concept we then try using the circuit to power an LED and calculate the efficiency. Finally I do a quick demo of driving a speaker with this circuit, not a good idea but a nice showcase of its responsiveness

What happens when:
0:00 Introduction
0:26 What to change from the previous circuit
1:01 The new circuit
2:06 The inductor
3:06 Testing inductor saturation current
7:05 Schematic and explanation of the new circuit
8:19 Constructing the circuit
8:56 Explaining the physical circuit
10:43 Testing with the LED
12:04 Switching waveforms
13:18 Circuit summary
13:40 Can it drive a speaker?
17:40 Conclusion
18:00 Outro

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