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  1. bertus

    Simple JFET Switch Question

    Hello, Perhaps the following PDF's might give you a better view on the mosfets. Bertus
  2. bertus

    Polaroid p49fn0038k, burn dip switch location

    Hello, Read this page for resizing pictures: https://www.howtogeek.com/354015/how-to-resize-images-and-photos-in-windows/ You can upload pictures using the "Upload a File" button. Bertus
  3. bertus

    Need more information

    Hello, Perhaps the attached PDF's might help. Bertus
  4. bertus

    Polaroid p49fn0038k, burn dip switch location

    Hello, Any photo or paint program can do the resize. A well known free program is ImageMagic: https://imagemagick.org/index.php Bertus
  5. bertus

    Polaroid p49fn0038k, burn dip switch location

    Hello, Resize the pictures to about 300 kB and you will be fine to upload the pictures. Bertus
  6. bertus

    Simple JFET Switch Question

    Hello, You want a high side switch. A P-mosfet will do the trick: https://learn.sparkfun.com/tutorials/constant-innovation-in-quality-control/the-high-side-switch Bertus
  7. bertus

    How long lifepo4 battery power tv

    Hello, What is the efficiency of the used power inverter? Assuming an efficiency of about 80 %, the consumed power is about 32 Watts. At 12 Volts that is 2.7 Amp. 100 Amphour / 2.7 Amp = 37 hours. Bertus
  8. bertus

    Chuck Geschke, founder of Adobe and developer of PDFs, dies at age 81

    Hello, https://www.washingtontimes.com/news/2021/apr/17/founder-of-adobe-and-developer-of-pdfs-dies-at-age/ https://en.wikipedia.org/wiki/Charles_Geschke Bertus
  9. bertus

    Thought for the day...

    Good news... according to the WHO, I am now considered to be among the youth demographic :) 65 Years old is still young! • 0-17 years old: underage • 18-65 years old: youth/young people • 66-79 years old: middle-aged • 80-99 years old: elderly/senior • 100+ years old: long-lived elderly (I...
  10. bertus

    And now something weird

    This girl gets her ankles higher than her shoulders! Thanks tonyr1084 AAC
  11. bertus

    Comedy Thread

    Thanks camartinez AAC
  12. bertus

    Advice on linear actuators ? Length of strong strokes per second ?

    Hello, The wiki has a page on tatto machines: https://en.wikipedia.org/wiki/Tattoo_machine Bertus
  13. bertus

    Alarm...ish Covid vaccin

    Hello, Have a search for a "window comparator". Bertus
  14. bertus

    Comedy Thread

    Thanks djsfantasi AAC
  15. bertus

    Amazing and challenging problem!

    Hello, With a 2 digit base, the E24 series could be used: Bertus
  16. bertus

    Is my schematic correct?

    Hello, Without the code, we can not tell if the right connections are used. In the code the inputs and outputs must be declared. Also what should happen with the leds and switches is in the code. Bertus
  17. bertus

    Connect 5 pin Halo switch to Adafruit Soundboard?

    Hello, Are the used switches the ones as in this page: https://www.frozencpu.com/products/8698/ele-374/Blue_Illuminated_Vandal_Resistant_Latching_Switch_-_22mm_-_Black_Housing_-_Ring_Illumination.html bertus
  18. bertus

    SCR TAG9327

    Hello, This is the data I could find: Descriptions Descriptions of STMicroelectronics S0817NH provided by its distributors. THYRISTOR, 8.0A 800V TO-220; Thyristor/Triac Type:Thyristor; RMS Current It:8A; Current Itsm:80A; Current Igt:4mA; Voltage Vgt:1.5V; Case Style:TO-220; Av Current...
  19. bertus

    Cell phone detector circuit

    Hello, This circuit might have a chance of working: https://www.eeweb.com/cellphone-detector/ It does have a detection circuit before the opamp, but it is not selective. It will react on any RF signal near the circuit. Bertus
  20. bertus

    Cell phone detector circuit

    Hello, I approved the moderated post. A RF circuit will not work well on a breadboard. Also the 0.22 uF capacitor will basicaly short any RF signal. I have great doubt if those circuit will work. Bertus
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