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ZOPAN PFL-22... Restored!
The promised follow-up video for my ZOPAN PFL-22 frequency counter after thorough restoration. All cleaned up and nice inside, but does it solve any of its measurement problems I noticed in the earlier video ( https://www.youtube.com/watch?v=e-pvGzIBrUU )?
0:00 Intro
0:01 Let's See What Changed
3:20 Squeaky Clean!
5:44 Input Amplifier
8:38 Block Diagram Explained
13:13 Logic Schematics
20:55 The Counter Circuits
24:25 The Input Amplifier
35:30 Getting Confused
40:33 What's It Good For? My Test Setup
43:45 Afterword
It's hard to analyze logic while talking on the camera, haha. I may be too analog for that.
Support me on my Patreon page at https://www.patreon.com/KeritechElectronics or via PayPal https://paypal.me/keritech
Instagram - https://www.instagram.com/KeriSzafir
Hackaday - https://hackaday.io/keritech
#ElectronicsCreators #Keritech #Electronics
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The promised follow-up video for my ZOPAN PFL-22 frequency counter after thorough restoration. All cleaned up and nice inside, but does it solve any of its measurement problems I noticed in the earlier video ( https://www.youtube.com/watch?v=e-pvGzIBrUU )?
0:00 Intro
0:01 Let's See What Changed
3:20 Squeaky Clean!
5:44 Input Amplifier
8:38 Block Diagram Explained
13:13 Logic Schematics
20:55 The Counter Circuits
24:25 The Input Amplifier
35:30 Getting Confused
40:33 What's It Good For? My Test Setup
43:45 Afterword
It's hard to analyze logic while talking on the camera, haha. I may be too analog for that.
Support me on my Patreon page at https://www.patreon.com/KeritechElectronics or via PayPal https://paypal.me/keritech
Instagram - https://www.instagram.com/KeriSzafir
Hackaday - https://hackaday.io/keritech
#ElectronicsCreators #Keritech #Electronics