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  1. bertus

    Making the connection

    Hello, It looks like the yellow wire is pushed in to far: Bertus
  2. bertus

    Making the connection

    Hello, Not many will like to download the file from an unknown site. I have downloaded the image, resized it and will upload it here for the others to see: Bertus
  3. bertus

    Powering 0402 smd LEDs

    Hello, 0402 is really small. http://eastbay-rc.blogspot.com/2012/09/smd-led-sizes.html Have a look at these videos: Bertus
  4. bertus

    Powering 0402 smd LEDs

    Hello, Do you have details on the used leds, like datasheets? For the SMD resistors, you could have a look at Farnell: https://uk.farnell.com/w/c/passive-components/resistors-fixed-value/chip-smd-resistors?resistor-case-style=0603-1608-metric- I have choosen the 0603 style for the 100 mW power...
  5. bertus

    DC-DC converter design

    Hello, Putting a capacitor on the output of the voltage divider will delay the voltage drop, but can not prevent the voltage drop, Bertus
  6. bertus

    Powering 0402 smd LEDs

    Hello, Did you choose the 3025 for its size? Have a look at the wike for other sizes: https://en.wikipedia.org/wiki/List_of_battery_sizes Bertus
  7. bertus

    White noise

    Hello, The wiki has a nice page about the colors of noise: https://en.wikipedia.org/wiki/Colors_of_noise Here is a simple circuit that creates white noise: https://www.eeweb.com/simple-white-noise-generator/ When modified the frequency spectrum reaches into the RF range...
  8. bertus

    DC-DC converter design

    Hello, The output voltage in a resistor voltage divider will not be stabel when loaded. The lower the value of the load, the lower the output voltage will be. Bertus
  9. bertus

    CD songs distorted badly first two or three songs.

    Hello, A CD is read from the inside to the outside. The CD is spinning faster at the beginning of the CD. Is there moisture near the center of the spindle? Bertus
  10. bertus

    Gould Model 465 Oscilloscope

    Hello, Was one of the capacitors leaking? Then the acid from the capacitor could have caused the defect on the track. Bertus
  11. bertus

    White noise

    Hello, When amplifying white noise, you must know over wich bandwidth you want to amplify. Real white noise has a spectrum from 0 to infinity. Practical white noise goes upto the bandwidth of the used amplifier. Bertus
  12. bertus

    Powering 0402 smd LEDs

    Hello, You can calculate the needed resistor as followed: R=(Vsupply-Vled)/Iled The supply voltage is the battery voltage in your case. Bertus
  13. bertus

    BATTERY RECHARGING DETAILS NEEDED

    Hello, An other way of fast charging is using the reflex method. This blog shows you how it works: http://schematicselectronics.blogspot.com/2010/08/reflex-charger-batteries-nicd-and-nimh.html Bertus
  14. bertus

    Powering 0402 smd LEDs

    Hello, In addition to the resource that @Harald Kapp gave, read this post: https://www.electronicspoint.com/forums/threads/got-a-question-about-driving-leds.256849/#post-1804170 The different colors will have different forward voltages. As the forward voltages of the leds are different, each...
  15. bertus

    Hi,

    Hello, Welcome. You will find a lot of information in the resources section: https://www.electronicspoint.com/forums/resources/ Bertus
  16. bertus

    Analog frequency meter

    Hello, Could it be that there is a frequency to voltage converter needed for the meter? The LM2907 / LM2917 chips are capable of converting the frequency to a voltage. Bertus
  17. bertus

    Analog frequency meter

    Hello, An other type of analog frequency meter is the vibration type...
  18. bertus

    Nixie Tube Clock- Switching Adapter Help

    Hello, The amazon adapter will work: The 0.2 Amp is for the input from the mains. You need to look at the output wich states 0.5 Amp. Bertus
  19. bertus

    transistor base load

    Hello, When you look at the 450 nSec delay line of a color TV, you will understand that 1 Sec will be huge: https://en.wikipedia.org/wiki/Analog_delay_line Bertus
  20. bertus

    Thermocouple Interfacing with PIC18F45K80

    Hello, Did you see the schematic on page 8 of the given application note. It shows the amplifier needed for the thermocouple and the 3004 and pic. Bertus
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