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  1. bertus

    Input Zener

    Hello, Do you expect higher voltages at the 5 Volts input? The regulator will work upto 5.5 Volts. A diode in series with the input will raise the input limit to about 6 Volts. Bertus
  2. bertus

    Book Reviews

    Hello, @TCSC47 , Here in Holland we had a couple of Tandy shops. They where transformed to phoneshops (not selling any electronics parts anymore) and dissapeared after some time. I have only one electronics shop left in my surroundings, called Radio Rotor : http://www.rotor.eu/en/ Here are...
  3. bertus

    Paralleling microSD cards

    Hello, Did you read the pages 7 and 8 of the kingston PDF? It shows the SPI method with bus connections. Bertus
  4. bertus

    Paralleling microSD cards

    Hello, Have a look at the following PDF: https://www.kingston.com/datasheets/SDCIT-specsheet-8gb-32gb_en.pdf The following page will show you the pinout: https://www.electroniccircuitsdesign.com/pinout/sd-microsd-card-pinout.html Bertus
  5. bertus

    NAD 3020A Amplifier Low Volume

    Hello, You might find more info on this other forum: https://www.diyaudio.com/community/threads/nad-3020a-schematics-or-parts-list.75057/ Bertus
  6. bertus

    Minimizing 120VAC relay EMI

    Hello, I see two relays in your schematic RLY1 and RLY2. As the coil is 5 Volts DC a flyback diode should be installed. Bertus
  7. bertus

    Anyone know what this is?

    Hello, It could also be part of a treadmill or exercize bike, as it also shows calories. The cord would still be connected to the speed sensor. Have a look at this add: https://www.popodeal.com/p/?iid=223401842&pr=35.99 Bertus
  8. bertus

    Anyone know what this is?

    Hello, It looks like a speedometer for a bike. The cord you are holding connects likely to a speed sensor. Bertus
  9. bertus

    Anyone know what this is?

    Hello, Is there a picture to see? Post a picture with a size of max 300 kB. Bertus
  10. bertus

    Book Reviews

    Hello, Here I have an old booklet from Radio Shack with a lot of electronics data/formulas: https://archive.org/details/rsedb And an "encyclopedia" from Radio Shack https://archive.org/details/rsece Bertus
  11. bertus

    Username change

    Hello, As far as I know, name changes are rarely done. There must be a valid reason to have the name changed. Only admins can perform name changes. It is upto the admins if the change is made. Bertus
  12. bertus

    Towards 6G Internet of Things

    Hello, The wiki shows the difference: https://en.wikipedia.org/wiki/5G https://en.wikipedia.org/wiki/6G_(network) Bertus
  13. bertus

    Adding capacitor to wireless power transfer circuit. Need guidance.

    Hello, The chart was downloaded as PDF from the LUMEX site. Bertus
  14. bertus

    Issues with PIC16F1503

    Hello, There seems not to be an UART in the PIC16F1503. Read the full datasheet: https://www.microchip.com/en-us/product/PIC16F1503#document-table Bertus
  15. bertus

    Bench power supply upgrade

    Hello, Most times I have used silicon pads on TO-220 transistors: Bertus
  16. bertus

    Bench power supply upgrade

    Hello, The following pages on heatsinks may interest you: https://sound-au.com/heatsinks.htm https://sound-au.com/articles/diy-heatsink.htm Bertus
  17. bertus

    How is current passing through the capacitor in the following schematic?

    Hello, Does this page help a bit: https://www.nutsvolts.com/magazine/article/bipolar_transistor_cookbook_part_6 Bertus
  18. bertus

    Adding capacitor to wireless power transfer circuit. Need guidance.

    Hello, What is the voltage you see on the supercapacitor? As stated it may not go over 2.7 Volts. What color led is used? A white led may need 3 to 4 volts to be lit. Bertus
  19. bertus

    Can't find the transformer I need so need to build my own

    Hello, An 10 KVA transformer would have a weight of about 75 kilogram. See the attached (german) folder. Bertus
  20. bertus

    Can't find the transformer I need so need to build my own

    Hello, 3 phase transformers can be configured in many ways. This page will give you more info: https://www.electronics-tutorials.ws/transformer/three-phase-transformer.html Bertus
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