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  1. bertus

    Anyone here ever programmed an FPGA?

    Hello, Have a look at Mouser for some boards: https://au.mouser.com/Embedded-Solutions/Engineering-Tools/Programmable-Logic-IC-Development-Tools/_/N-cxcznZ1yzvvqx?Keyword=fpga+development+board&Ns=Pricing%7c0&No=100&FS=True&P=1yzohtw Pick your price between 8 and 14000 Dollars. Bertus
  2. bertus

    Anyone here ever programmed an FPGA?

    Hello, Have a look at this package: https://www.staticfreesoft.com/ Bertus
  3. bertus

    BY PASS CAPACITOR

    Hello, All About Circuits has also a nice thread with info: Decoupling or Bypass Capacitors, Why? Bertus
  4. bertus

    Book Reviews

    Hello, Other books for beginners are from the Make: series: https://the-eye.eu/public/Books/HumbleBundle/make_electronics_2ndedition.pdf https://the-eye.eu/public/Books/HumbleBundle/make_moreelectronics.pdf Bertus
  5. bertus

    Light sensor replacement for a kit

    Hello, When you are using an external potmeter, the potmeter on the board needs to be removed. From the datasheet: controlled while the sensor is connected not perceive light. LOCATION EXTERNAL POTENTIOMETER. If you are removing or changing the potentioneter inserted in the module by an outer...
  6. bertus

    Light sensor replacement for a kit

    Hello, What should be the light and dark resistance? Do you mean 300 Ohms with the .300k? RS seems to carry 4 ldrs. https://uk.rs-online.com/web/c/displays-optoelectronics/optocouplers-photodetectors-photointerrupters/ldr-light-dependent-resistors/?searchTerm=ldr&applied-dimensions=4294884396...
  7. bertus

    555 to CD4013: Direct Connection?

    Hello, When the NE555 and CD4013 are on the same powersupply, that should be fine. Bertus
  8. bertus

    Thermocouple

    Hello, As you said there is about 1 Ohms between the 2 white wires, it is most likely a PT100 RTD. That should be connected as followed, as given in the link of post #6 : As you also said that you measured 115 Ohms between the red and white wire implies that the tempareture at the sensor was...
  9. bertus

    Thermocouple

    Hello, If there is a third wire that is not connected to the other wires, it is for shielding: If you are using a shielded thermocouple, connect the COM terminal of your device to the shield and the shield to a common-mode voltage reference of the thermocouple. A common-mode voltage reference...
  10. bertus

    Thermocouple

    Hello, Have a look at this page: https://instrumentationapplication.com/difference-between-2-wire3-wire-4-wire-rtds/ Bertus
  11. bertus

    Thermocouple

    Hello, Can you measure the resistance between the wires? When you measure 100 (PT100) or 1000 (PT1000) Ohms between the red and one of the white wires and 0 ohms between the two white wires, it is a RTD. Then the third wire is a sense wire. Bertus
  12. bertus

    And now something weird

    https://www.news18.com/news/buzz/thai-burglar-woken-up-by-police-after-he-falls-asleep-while-robbing-a-house-3581003.html
  13. bertus

    Thermocouple

    Hello, Is the third wire connected to the others? If so you have an RTD and not a thermocouple. If it is not connected the third wire is a shielding wire. Bertus
  14. bertus

    Turbovac driver

    Hello, A turbopump is run up very gradualy. As the motor spins very fast, it should be controlled to avoid a crash. I have seen crashes of turbo pumps and you do not want that to happen. The blades where all over the machine it was mounted on. Have a look at this pfeiffer video: Bertus
  15. bertus

    Understanding this generator - see schematic

    Hello, This page has some exploded views of the parts: https://www.ereplacementparts.com/briggs-and-stratton-195432403501-engine-parts-c-16758_17347_279806_280402.html Bertus
  16. bertus

    Hello, Where Does this 2V difference come from in Op-Amps

    Hello, Then you probably do not know this wiki: http://bordodynov.ltwiki.org/ https://disk.yandex.ru/d/6nSSUmZiT9oCoQ Bertus
  17. bertus

    Alt tester newby needs help plz

    Hello, It looks like a CT (Center Tap) connected transformer as there seem to be two diodes for the rectification. The transformer could have a 2 X 12 Volts output. Are the resistors parallel to the caps? That would make a heavy load. Bertus
  18. bertus

    Comedy Thread

    DON'T BLAME ME! Watch the video below! Inverse Reactive Current Unilateral Phase Detractors Syncronising Cardnal Gram Meter Retro-Encabulator (sounds like Buggs Bunny's "Martin the Martian") Magneto Reluctance Capacitive Duractance Pre-Famulated Amulite Maluable Logarythmic Casing Spurving...
  19. bertus

    Mini hi voltage generator dc input or ac input?

    Hello, They must have chinese voltages. 2 kV or 400 kV as in the ad is a LARGE difference. Bertus
  20. bertus

    Mini hi voltage generator dc input or ac input?

    Hello, What is the distance? 1 to 2 mm? Bertus
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