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  1. bertus

    Mini hi voltage generator dc input or ac input?

    Hello, Read the following PDF to estimate the voltage. Bertus
  2. bertus

    Mini hi voltage generator dc input or ac input?

    Hello, The output voltage might be different with a higher impedance probe to test the voltage. To test high voltage with a good high voltage probe: https://www.tequipment.net/Fluke80K-40.html bertus
  3. bertus

    power supply to 1,5v (clock) AND 3v (LED)?

    Hello, The led requirements are not clear yet. Could you post details on the led to be used? Perhaps a picture of the led. The maximum size for pictures is about 300 kB. Bertus
  4. bertus

    Mini hi voltage generator dc input or ac input?

    Hello, It states 3 to 6 Volts DC input. I must say, the isolation looks terrible. Bertus
  5. bertus

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

    Hello, What happens when you make R1 1K? It can be that there are calculations made with an ouput resistance. I do not know the properties of the "OPAMP_RATED" in NI. Bertus
  6. bertus

    Replacement LED for Guitar Effects Pedal (Ibanez Tone-Lok CF7)

    Hello, You used the wrong points to test. Have a look at the picture: Bertus
  7. bertus

    Replacement LED for Guitar Effects Pedal (Ibanez Tone-Lok CF7)

    Hello, Whether the led will light depends on the used current and voltage for the diode test. Many use a tiny current. Bertus
  8. bertus

    Comedy Thread

    MOSFET (Mysteriously Obliterating Smoke and Fire Emitting Transistors)
  9. bertus

    Book Reviews

    Hello, A book for absolute beginners is "Resi and Transi banish the misteries of electronics" https://archive.org/details/resi-and-transi-banish-the-mysteries-of-electronics_202009/mode/2up And the electronics demistified book...
  10. bertus

    And now something weird

    noisy swan:
  11. bertus

    blew up 2 pin to uk 3 pin android mi box

    Hello, Do you have more details on the "android box". Wich brand and type? Bertus
  12. bertus

    Hot air gun plug standard

    Hello, Then there is here a teardown of the station: It will explain the parts in the station. Bertus
  13. bertus

    Hot air gun plug standard

    Hello, Your station looks the same as this: https://www.amazon.com/Soldering-Rework-Station-welder-YIHUA/dp/B01AOA9D3A Following the number, I found this youtube: Bertus
  14. bertus

    power supply to 1,5v (clock) AND 3v (LED)?

    Hello, When there is no space in the clock, you could use a multi wire cable to get from the poser sources to the clock. An old phone wire already has 4 wires in it. One could be the common gound, one the 3 Volts and one the 1.5 Volts. Bertus
  15. bertus

    Hot air gun plug standard

    Hello, Do you also have a number of the station? There seem to be many: rework station "Mark Ethan " Bertus
  16. bertus

    Photodiode falltime problem

    Hello, FYI, there is a long thread on All About Circuits from the same user: Circuit design of a photodiode There is already a lot of information given. We do not have to invent the wheel twice. Bertus
  17. bertus

    Need help with touchless on/off switch - detailed working principle

    Hello, I have attached two papers. One for the reflective sensor and one with some circuits. Bertus
  18. bertus

    Need help with touchless on/off switch - detailed working principle

    Hello, The D2 , Q1 combination can be a beam break or reflection sensor. In a beambreak circuit, an object between D2 and Q1 will activate the circuit. In a reflection circuit, an object close to the reflection sensor will deactivate the circuit. Bertus
  19. bertus

    And now something weird

    Road maintenance bear - more thoughtful than a lot of humans. Thanks Mrchips AAC
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