Bun's Lab – Telegram
Bun's Lab
@BunsLab
147 subscribers
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102 videos
63 files
49 links
Electronics projects, vintæg computing, programming and repairs. A minimalist blog of sorts.
@BunsGarden @BunsNook
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Bun's Lab
147 subscribers
Bun's Lab
If I can fix the LCD display, it might be worth just throwing it on ebay and putting those 100 bucks towards a 5 1/2 or 6 1/2 digit meter. I really should upgrade
131 views
Bun's Lab
For completeness sake, here is the documentation of the Fluke
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Bun's Lab
Fluke 8050A_sch.pdf
231.4 KB
Fluke 8050A_replaceable.pdf
290.6 KB
Fluke 8050A_recharg-batt-option.pdf
381.7 KB
Fluke 8050A_maintenance.pdf
429.7 KB
FLUKE 8050A Instruction.pdf
5.1 MB
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Bun's Lab
Unrelated.

Really cool bio channel, give it a watch
https://www.youtube.com/watch?v=eSMnQPF15tA
YouTube
Are Prions Truly Impossible to Destroy?
Prions are some of the most terrifying biological agents out there. Here is a video detailing (almost) everything I could find about these special proteins.

Business Inquiries: ybtspod@gmail.com

Become a member! https://www.youtube.com/channel/UCom09c…
169 views
Bun's Lab
Next on the bench: a PM 5133 function generator made by Philips
❤1
129 views
Bun's Lab
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It's pretty dead
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Bun's Lab
129 views
Bun's Lab
The main oscillator is not running. Shown here is the range selection and integration capacitors
147 views
Bun's Lab
philips--pm-5133--service-user--ID8639.pdf
27.2 MB
Service manual
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Bun's Lab
Theory of operation and a simplified schematic of the main oscillator
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Bun's Lab
p70.png
10.9 MB
Relevant schematic parts in full
p67.png
16.5 MB
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Bun's Lab
The transistor pair 423 of the comparator is realized as a CA3183E transistor array in a PDIP package.
152 viewsedited  
Bun's Lab
Cutting the gate of the BF245 JFET out of circuit and feeding the blue signal into it. Red is the final output, I can control the amplitude and waveform just fine. Green and yellow are the bases of the two comparator transistors 423.
149 views