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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by Externet

  1. Externet

    Dismantling a WestinghouseRoku TV ?

    Hi. This model am not familiar with, seems put together different. Anyone knows how to reach the backlights for replacement without complications for this model ?
  2. Externet

    Does US electric code allow branching ?

    Thanks, gentlemen. The house has no electrical service at the moment; being refurbished/rebuilt. (Utility disconnect/reconnect does not apply) The additional single 30A breaker box would be for a grid-tied inverter, to locate on exterior near the energy meter as a redundant mandatory firemen...
  3. Externet

    Does US electric code allow branching ?

    Hello. My energy meter feeds the 'loads center breaker box' with 20 feet of conduit. Would like to tap/connect another short branch from the same meter out to a second box 4' nearby with another conduit. Is that allowed ? Meter 240VAC out==================================================100A...
  4. Externet

    Wierd makita battery

    I like that. We need to explore the IC datasheet on the 'single wire' pack. But what is the management board supposed to protect/balance/perform ? Just turn off the mosfet - 21V supply when level is reached/sensed where ? Please tell us the chips for the single and for the several wire packs.
  5. Externet

    Wierd makita battery

    I play very often with tool battery packs, but not yet with a non-original Makita. Seems they just reference one cell for charging. if other packs have more sensing nodes, well, it is the factory choice. Compare the packs with multiple sensing nodes if the control board is different or not...
  6. Externet

    Current sources in parallel...

    Something is wrong with the bottom grounds.
  7. Externet

    Current sources in parallel...

    What is the behavior, limitations, particularities, considerations ? Do currents add feeding a load ?
  8. Externet

    how do we find the period?

    To find the period you need a periodic waveform to measure/test/read. And it is 1 divided by frequency.
  9. Externet

    Cannot find a vendor, help with its name too...

    Excellent find on your first link; rjenkinsgb, thank you ! - It is a rental place perhaps worth asking how many are available and if they can sell a few. It is a hard to find item. Zipzap... Images at post #1 are mine; new, kept for years as unobtanium. Will have to modify black silicone...
  10. Externet

    Cannot find a vendor, help with its name too...

    Hello all. I do not even know the name to search properly. Shade/visor/viewer/hood...? to eliminate glare for a sonar display. :confused: Ideally if available with a 7" LCD plain composite video monitor built-in and head straps. -No relation at all with smartphones / 3D- The one at right :
  11. Externet

    applying solder paste from a jar

    Have you tried a syringe without needle ? Have you seen a hypodermic needle for cattle ?
  12. Externet

    Is there a Power Bank that can also be charged with electricity?

    Yes, there is maaaany. Now called battery generators, solar generators, inverters, UPS, power station... Search as 'camping generators' ---->...
  13. Externet

    What is the name of this tool ?

    I believe those have spreader arms too, not only cutters.
  14. Externet

    What is the name of this tool ?

    Hello. It downs young trees flush to soil, no stumps. Grapple? shears? cutter? jaws ? ... Some hydraulic, some cordless, some AC electric, some are ratcheting, up to 10cm diameter, perhaps larger... Cutting edges are concave.

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