Four DIY scopes in practice - are they worth it?

This video firstly separates scopes into 11 cathegories for us to better understand the differences between their architectures. Then we'll have a look at two basic scopey thingeys, and what they are able and unable to do. Then comes Mustool MT8208 and MDS8207, which ar one from other more different than one would guess. We will also look at some waveforms, like from cheap function generator, then from cost effective DC/AC inverter, but also commercial pure sine wave inverter, and also inspect PWM regulator behavior. Links: Mustool MDS8207: https://bit.ly/3vre3Ev Mustool MT8208: https://bit.ly/3BtDo4b Hantek DSO2D10: https://bit.ly/3ShCa2i Function gen: https://bit.ly/3bolEg1 UPS transformer driver: https://bit.ly/3bk2yYA Panel PWM regulator: https://bit.ly/3Jp5xLR This video and its content is not a tutorial, but just and only additional informations for professinals, who want to know more regarding this topic. Please keep in mind, that electricity, when mishandled, can kill people/animals or damage property. Unexperienced people with no electrical enginnering education should stick only to safe voltages (eg. SELV and PELV), usually up to 24V. Any higher voltages should only be handled by professionals, or under supervision from professional. Keep in mind, that even mains isolated 230V can hurt you, as you can touch both potentials at the same time. Also, AC current prevents you from being able to control your muscles and makes them cramp, so if you hold live wire, you will probably keep holding it until your pain is replaced by your death. Please, people, think about safety - insulation for live potentials, and at least generic rubber / nitrile gloves should be the bare minimum. I am personally professional electrician with official certification for working on live devices, with certification for distribution, and also for projecting. I know what I am doing, and I am aware of the risks. Reproducing my actions is only for professinals. Chapters: 0:00 Intro 1:07 Oscilloscope categories 2:04 1 Tamagotchi / PCB 2:49 2 Fast acquiring multimeter 4:06 3 DMM with scope-like functionality 4:52 4 DMM + scope in one 5:41 5 Portable battery scope 5:58 6 Tabletoid 6:34 7 Battery operated bench scope 7:10 8 Classic bench scope 9:24 9 Mixed Signal Oscilloscope 9:35 10 PC oscilloscope 11:25 11 Special purpose scopes 11:49 PCB scopey-thingy 17:00 Fnirsi 150 19:48 Mustool MT8208 25:33 Mustool MDS8207 31:25 Basic function generator 33:15 DC/AC inverter from UPS 36:56 Pure sine wave inverter 37:48 PWM Regulator 39:16 Final chapter