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  1. bertus

    static electricity generators

    Hello, A well known static electricity generator is the Van de Graaf: https://en.wikipedia.org/wiki/Van_de_Graaff_generator Bertus
  2. bertus

    static electricity generators

    Hello, Did you see his other video: The power will be very minimal. Bertus
  3. bertus

    And now something weird

    BOMB EXPLOSION IN EXETER - WW2 Bomb Disposal - Saturday 27th February 2021 (not so well controlled)
  4. bertus

    Datasheets on Funkamateur.de

    Hello, On the german website of Funkamateur.de there are many datasheets to find. A lot of them are about special RF parts: https://www.funkamateur.de/bauelemente.html https://www.funkamateur.de/bauelemente-2.html https://www.funkamateur.de/bauelemente-3.html Bertus
  5. bertus

    Feeding load with two 220V AC power supplies to reach uninterrupted power supply.

    Hello, What you are describing IS an uninterruptible power supply. There are many commercial versions available: uninterruptible power supply Depending on the load and running time, they can be vary in price. Bertus
  6. bertus

    Requirement of RGB LED

    Hello, Have a look at the following RGBW leds: https://de.farnell.com/en-DE/cree/mce4ct-a2-0000-00a5aaaa1/led-hb-red-grn-blu-white/dp/1727693 https://de.farnell.com/en-DE/cree/xmlctw-a0-0000-00c3acc02/led-high-brightness-red-green/dp/2414990 Bertus
  7. bertus

    And now something weird

    Corona proof rehersal:
  8. bertus

    I cant find where to buy spark gap "circuit interrupters"

    Hello, Here is some more info on the neon-lamps I posted in post# 13: http://www.vk6fh.com/vk6fh/neonovelties.htm Bertus
  9. bertus

    Protect E03, Good Voltage output

    Hello, In addition to what @shrtrnd said, is here a page that will help you spot the bad caps: https://www.robotroom.com/Faulty-Capacitors-1.html Bertus
  10. bertus

    analogue pong circuit I found on the internet

    Hello, Here is an other "analog" pong circuit: http://www.pong-story.com/eaus0576.htm Bertus
  11. bertus

    I cant find where to buy spark gap "circuit interrupters"

    Hello, Neon will need about 90 volts to ignite. From the wiki: Voltage tester +DC (left), -DC (center), AC (right) supplied to NE-2 type neon lamps Most small neon (indicator-sized) lamps, such as the common NE-2, have a break-down voltage of around 90 volts. When driven from a DC source, only...
  12. bertus

    And now something weird

    A bad sportsman:
  13. bertus

    Current transformer

    Hello, With the circuit given in post #21, the voltage on the arduino input may go from +9.4 to -4.4 Volts, as the voltage ts clamped at 6.2+0.7 Volts, higher or lower as 2.5 Volts. This will likely distroy the arduino. This would likely be an better option: Bertus
  14. bertus

    New project

    Hello, @Sparky_zap , Have a look at this: Bertus
  15. bertus

    Potentiometer with two extra connectors

    Hello, From adafruit: Panel Mount Right Angle 10K Linear Potentiometer w/ On-Off Switch https://www.adafruit.com/product/3395 There you will also see the posted picture. The resistance value may differ on your potentiometer. Bertus
  16. bertus

    Solid State Bass Amp hums

    Hello, Hum can also be pickup. Are the used cables shielded? Is the hum there with CD input? And how is it with the J1 and P1 input, wich get amplified much more? Bertus
  17. bertus

    LED lit cabinets

    Hello, Your image does not show, because it is to large and linked to an external site. I have downloaded the picture and resized it: I would only switch the outputs to the led strips and not the input of the power supply. Bertus
  18. bertus

    pulse generators

    Hello, @Christophe_Rutsaert , Did you notice that Simon was last seen in sept 2014? You will likely not get any responce from him. Bertus
  19. bertus

    LED lit cabinets

    Hello, I would switch the low power side. You do not want the mains to be at the front of the cabinet. The powersupply could be mounted on the rear of outside the cabinet. I assume the ledstrips are 12 Volts, wich is much safer to wire inside the cabinet. Bertus
  20. bertus

    Why is it PNP instead of PPN for transistors

    Hello, @hevans1944 , Yes,there are many semiconductor devices: https://www.elprocus.com/semiconductor-devices-types-and-applications/ Bertus
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