Zener Diode Tester - Part 1. The build.

Zener Diode Tester - Part 1. The build. Testing zener diodes can be a pain, so I decided to design and build this tester. I wanted it to be battery operated, chargeable, portable and simple. I think the result meets these criteria quite well. I divided the video into two parts, with the part 1 being the build process, and part 2 covering the circuit development and design. If you don't want to waste time on design considerations, you can just follow the part 1 video. Part 2 is here:    • Zener Diode Tester - Part 2. The circuit d...   I decided to use simple modules that are cheap and easily available for some functions. These are often cheaper than some single components needed, so their use is actually a good idea and simplifies matters. The modules I used here are: https://www.banggood.com/18650-Batter... https://www.banggood.com/3Pcs-4A-XL60... https://www.banggood.com/0_28-Inch-Mi... Have fun! See a series of 'Restoration Building Blocks' videos on detailed steps in the restoration process:    • How to safely check the Power Transformer ...   See also playlists on some other completed restoration projects. PHILIPS BX750A:    • Philips BX750A tube radio restoration - Pa...   TELEFUNKEN OPUS 2114:    • Telefunken Opus 2114 stereo tube radio res...   SABA UW-175-Z 3D:    • Saba UW 175-Z 3D tube radio restoration - ...   GRUNDIG 1070:    • Grundig 1070 tube radio restoration - Part...   SCHAUB-LORENZ GOLDY 58 type 3020:    • Schaub-Lorenz Goldy 58 type 3020 tube radi...   BUSH VHF64:    • Bush VHF64 tube radio restoration - Part 1...   GRUNDIG 3060A:    • Grundig 3060a tube radio restoration - Par...   TELEFUNKEN OPERETTE 8:    • Telefunken Operette 8 tube radio restorati...   GRAETZ SUPER 171W:    • Graetz Super 171W tube radio restoration -...   LOEWE-OPTA MAGNET 3737W:    • Loewe-Opta Magnet 3737W tube radio restora...   BRAUN ATELIER 3:    • Braun Atelier 3   LOEWE-OPTA TRUXA STEREO 4741W:    • Loewe-Opta Truxa Stereo 4741W   GRAETZ COMEDIA 616:    • Graetz Comedia 616 tube radio restoration ...   SABA FREIBURG W2:    • Saba Freiburg W2 (WII) restoration   GRAETZ MUSICA 4R417:    • Graetz Musica 4R417 restoration   You may also be interested in ... CAPACITOR LEAKAGE TESTER:    • Capacitor leakage tester design & build DI...