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  1. Alec_t

    IC Insertion tool

    28-pin ZIF (Zero Insertion Force) socckets are widely available, e.g on Ebay etc.
  2. Alec_t

    Losses in LTSpice

    The V3 and V4 voltages aren't specified in your schematic.
  3. Alec_t

    What do you all think is the key to achieving efficient electric transportation now?

    Development of new batteries which don't require exotic materials in their manufacture and which aren't toxic or likely to catch fire/explode.
  4. Alec_t

    Does it include multipiers?

    What does the datasheet say?
  5. Alec_t

    Easily add special characters to a post, e.g. the Ω - Windows users only :(

    I recently got ChatGPT to list all the maths and Greek characters , saved the list as a file using Wordpad, and now can copy and paste any wanted character from that file.
  6. Alec_t

    Can I use a digital potentiometer/remote volume kit in a vintage Pioneer LX-424 receiver?

    According to your posted schematic (if I'm reading the fuzzy text correctly), each half of your volume control (VR1a,b) is 250k and has a tapping for the loudness control switch (S7a,b). Nothing in the write-up of your digital module suggests it has (or emulates) such tappings.
  7. Alec_t

    Can I use a digital potentiometer/remote volume kit in a vintage Pioneer LX-424 receiver?

    I'm not familiar with the Pioneer receiver, but my NAD 3020 amp's volume control (VR1) has a tapping which leads to the Loudness control switch (SW5). If your receiver's volume control similarly has a tapping then I doubt the linked digital volume/tone control module would be compatible as a...
  8. Alec_t

    mouse x7 xl-747h randomly stop responding

    I have marked up your pic (below) in yellow 11 areas where I think there are small solder blobs, poor joint soldering or corrosion, any of which might cause a problem.
  9. Alec_t

    mouse x7 xl-747h randomly stop responding

    Can you post a sharply-focussed pic of the under-side of that board?
  10. Alec_t

    mouse x7 xl-747h randomly stop responding

    Have you tried a different mouse in the same port?
  11. Alec_t

    mouse x7 xl-747h randomly stop responding

    Good to know it's working.
  12. Alec_t

    mouse x7 xl-747h randomly stop responding

    I would guess there's a bad connection somewhere inside the mouse, or in the wiring to the mouse.
  13. Alec_t

    mouse x7 xl-747h randomly stop responding

    Is that a wireless mouse or a wired one?
  14. Alec_t

    power

    If that is exactly as the requirement was worded, then note that it does not specify zero current or zero heat dissipation. You could just connect them via a 100 MegOhm resistor and challenge the tester to define 'minimal'. :)
  15. Alec_t

    power

    Join the club. :)
  16. Alec_t

    power

    You could connect each 4S pack via a respective diode to a common load. The load would then be powered by whichever pack had the higher voltage. Or you could connect each pack via a respective resistor to the common load. The load would then be powered by a weighted average of the two pack voltages.
  17. Alec_t

    Basic Volts vs watts question

    The resistance of the 12V bulb would be 1/4 that of the 24V bulb, so the element of the 12V bulb could be both cheaper to make and more rugged. As for feelings, both would feel pretty hot when running.:)
  18. Alec_t

    can the leds be mounted into spray foam insulation

    Why are you using spray foam insulation? Would something less flammable (e.g. mineral wool, glass fibre) be ok instead?
  19. Alec_t

    Woo-Woo Impossible frequencies ghosting apartment.

    Were these AirBnBs in seismically active territory? If not, seek medical advice in case you are experiencing body tremors.
  20. Alec_t

    How to Boost FM Signal Output from Raspberry Pi FM Transmitter

    Do you have a licence for the transmitter? What you are proposing may be illegal in your country>.
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