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  1. bertus

    Comedy Thread

    Squirrel proof? Bertus
  2. bertus

    Photodiode.Transistors.

    Hello, Perhaps the PDF's from Hamamatsu might give you the wanted info: https://www.hamamatsu.com/sp/ssd/doc_en.html Bertus
  3. bertus

    SPI Signal Overshoot (to WIFI chip)

    Hello, What scope are you using with wich probes? As @WHONOES said, is the probe compensation adjusted correctly? When you use a 1:10 or 1:100 probe, the probe compensation is a must. Read this page for more info on the probe compensation...
  4. bertus

    Heathkit Condenser Checker

    Hello, Use the test instruments tab on the homepage to see more brands: https://www.kevinchant.com/ The site has also a nice resources page: https://www.kevinchant.com/-resources--links.html Bertus
  5. bertus

    Comedy Thread

    Hello, Read this article: https://www.science.ku.dk/english/press/news/2020/researchers-go-cuckoo-antarctic-penguins-release-an-extreme-amount-of-laughing-gas/ Researchers go cuckoo: Antarctic penguins release an extreme amount of laughing gas Bertus
  6. bertus

    Quick n Dirty answer needed

    Hello, When you want to want information on electronics on youtube, you better look at the more seriuos blog of EEVBlog: https://www.youtube.com/channel/UC2DjFE7Xf11URZqWBigcVOQ Bertus
  7. bertus

    Quick n Dirty answer needed

    Hello, The following thread on AAC written by Wendy, will tell you a lot about leds and the 555: https://forum.allaboutcircuits.com/threads/leds-555s-flashers-and-light-chasers.19075/ Bertus
  8. bertus

    0.01uf. 10n capacitor

    Hello, Peter Vis will explain you how the read the capacitor value on this page: https://www.petervis.com/electronics/Ceramic_Disc_Capacitor_Values/Ceramic_Disc_Capacitor_Values.html Bertus PS I have added your location to your profile.
  9. bertus

    0.01uf. 10n capacitor

    Hello, From the amazon page you posted in an other thread: https://www.amazon.ca/gp/product/B07F7ZN695/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1 30 Types of Ceramic Capacitors(300pcs): Each value 10pcs 2P, 3P, 5P, 10P, 15P, 22P, 30P, 33P, 47P, 75P, 68P, 82P, 101(100P), 151(150P)...
  10. bertus

    Question About Something I bought

    Hello, You might have some fun with the following books: https://the-eye.eu/public/Books/For Dummies/Electronics for Dummies (ISBN - 0470286970).pdf https://the-eye.eu/public/Books/For Dummies/Electronics Projects for Dummies (ISBN - 0470009683).pdf...
  11. bertus

    Question About Something I bought

    Hello, I see this list on the page : S9012, S9013, S9014, S9015, S9018, A1015, C1815, A42, A92, 2N5401, 2N5551, A733, C945, S8050, S8550, 2N3906, 2N3904 The A2015 is likely an 2SA2015 The C1815 is likely an 2SC1815 The A42 is likely an 2SA42 The A92 is likley an 2SA92 The A733 is likely an...
  12. bertus

    advantage and disadvatnge of AC to DC converter circuit

    Hello, Looking at this page: https://www.ebay.com/itm/10-ten-x-40x40x10-mm-12V-DC-0-16A-2-Pin-Brushless-Super-Quiet-Cooling-Fan/112237147103?hash=item1a21daf3df:g:6icAAOSwA3dYUZRT The fan is drawing 0.16 A. A 0.5 A adapter (wall wart) will do nicely...
  13. bertus

    Placement of Ammeter in Active LM338 Regulator

    Hello, @Hunter64 , the second schematic I posted shows how to implement current limiting. Bertus
  14. bertus

    Placement of Ammeter in Active LM338 Regulator

    Hello, Here is such PNP boost circuit that @duke37 mentioned: In the drawings the LM78XX is given, but it will work just fine for the LM317. When you want a single regulator with more current capability, have a liik at the LT1083, LT1084 or LT 1085: Bertus
  15. bertus

    advantage and disadvatnge of AC to DC converter circuit

    Hello, What size of fan do you want to use? There are also many 230 Volts fans available. EBMpapst and etri are well known brands for them. Bertus
  16. bertus

    advantage and disadvatnge of AC to DC converter circuit

    Hello, Yes, as there is no isolation transformer, the 12 volt leads are directly in contact with the mains. Bertus
  17. bertus

    advantage and disadvatnge of AC to DC converter circuit

    Hello, Why not use a simple adapter: https://www.ebay.com/itm/Power-Supply-Charger-Adapter-DC-5V-9V-12V-24V1A-2A-3A-Adaptor-DC-5-9-12-24V-Volt/233368804223?hash=item3655dd5b7f:m:m0o-snNRN6jjDSu3iOp6T2w They are cheap and safe. Bertus
  18. bertus

    Educational magazine : Hello World

    Hello, On the internet archive I came accross the Hello World Magazine: =subject%3A%22Education%22']https://archive.org/search.php?query=electronics hello world magazine&and[]=subject:"Education" Here is also the raspberrypi page: https://helloworld.raspberrypi.org/issues Bertus
  19. bertus

    Educational magazine : Hello World

    bertus submitted a new resource: Educational magazine : Hello World - Hello World Read more about this resource...
  20. bertus

    A fun magazine : Hackspace

    Hello, There is a new magazine that can be downloaded free. It has the following licence: Attribution-NonCommercial-ShareAlike 4.0 International The internet archive has them...
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