Search results

Search Forums New Posts
  1. dave9

    Total Electronics Novice In Need Of Power Supply Advice

    ^ Either nothing if the modem is polarity protected, or it lets the magic smoke out and stops working... "maybe" blowing a fuse to save itself but then you have to know how to fix that, fuses on small electronics may be a small surface mount chip, not the old school little glass type and are...
  2. dave9

    125 degree C electrolytics by Su'scon

    Yes use 105C, and you probably only needed to replace those that are bulged on top (and those parallel in the circuit to the buldged caps if that is the case with some), in other words the entire row of medium & larger caps to the left of the heatsink as pictured, with the other important...
  3. dave9

    Broken Y terminal on furnace circuit board

    Keep in mind that all you really need to do is grab a piece of wire that's a ~couple inches longer than the green one, take the wire nut off and replace the green one with the longer piece of wire, wrap that wire around to the back of the board and solder it to the screw header pin. While it...
  4. dave9

    Total Electronics Novice In Need Of Power Supply Advice

    Yes the device will only draw the current it needs which means that you could use a power adapter rated higher (in mA or A) than the device, not lower. Your power adapter isn't capable of enough current at 300mA. It's probably unregulated, has a multi-tap transformer inside to achieve the...
  5. dave9

    regulating power from solar bank

    I'd do some testing to determine what the real minimum voltage is for your xbox (One?). You shouldn't want to deplete your battery much past 12.0V for longevity's sake (unless deep cycle? You're being far too lazy to not supply ALL data about your setup). There are buck regulators that aren't...
  6. dave9

    Security System for a Boat..

    Don't see any need for connectivity or a camera, just put in a motion detector with a ridiculously loud air horn alarm, which you can hear from a mile away and will scare the !@#$ out of meddlers.
  7. dave9

    How to tell if an AC circuit ever gets power

    Instead of a wire, how about a detonator and plastic explosives, then put chickens next to it and you can just come back and see if there are any chickens?
  8. dave9

    Can Crusher - High School Physics Porject

    You don't need an SCR, use an old school throw switch like they used in movies to electrocute people, energize Frankenstein's monster, etc. It's not like it needs long term durability.
  9. dave9

    Securing LED to heat sink?

    BUY little screws? Heh, after cannibalizing things for years I have drawers full. Self-tapping or not, mainly you just need a decent quality screw. Grab some old widget with a plastic casing and you might have two screws from it. The key is having a good assortment of drill bit sizes so you...
  10. dave9

    networx nx6

    I would start by trying to load the Factory Defaults on page 12 of this installation manual, and hunt around for the default codes on other pages. https://www.surveillance-video.com/media/lanot/attachments/customimport/NX-6-Manual.pdf
  11. dave9

    Li-Po Battery protection circuitry placement

    What if it has a thermal sensor... would be good to have that where the battery is. Found some infos, here is a datasheet some merchants provide for the same pictured product and the IC on the protection board doesn't have temperature sensing. https://www.adafruit.com/product/1578...
  12. dave9

    General Electric Questions

    ^ At least for the time being with bitcoin still valued, you can buy all kinds of black market/illegal/etc goods and services on the dark web. That's always been the best use I saw for bitcoin, digitally move it into escrow until completion of a transaction with an anonymous stranger.
  13. dave9

    12v Turn signal and running lights?

    ^ I'm in favor of modded cars being pulled over and impounded, particularly when someone does the LED headlight mod in their existing incan housing, unless they happen to have their stock bulbs with them and can change them on the spot to proceed driving, then just a ticket for improper...
  14. dave9

    12v Turn signal and running lights?

    They should be wired for same function they had as factory equipment. If they are meant to be turn signals then they are too bright for running lights and could be blinding in certain scenarios which may be illegal. In the US, generally lamps facing rearward (does not necessarily have to...
  15. dave9

    Kenwood KA1030 audio amplifier problem

    Screenshot the PDF or print to image to post schematic.
  16. dave9

    Pioneer SX-838 Protection Relay Clicking

    The site you mentioned wanted me to sign up to see the file and I've reached a lifetime limit on signing up for things :p but if you can post and link it elsewhere, I can probably turn that 6.8MB file into something much smaller. Then again I don't necessarily need to if we have a simple quick...
  17. dave9

    Pioneer SX-838 Protection Relay Clicking

    What are the file limits here anyway, data size and/or resolution? I'm managed to post some high res diagrams, etc, files on other sites with surprisingly low file sizes by making them 8 bit indexed (if color is needed) or grayscale PNG with no dithering. If schematics are old school scans of...
  18. dave9

    General Electric Questions

    That seems like a foolish thing to do considering it's a $1000 bit of kit and high thermal density with "Power Consumption: 1375W + 7% (at the wall, with APW3 ,93% efficiency, 25C ambient temp)" If you just want to destroy it, try a sledge hammer.
  19. dave9

    Finding a piece like this?

    Ask Arri who supplies their screen? The worst they could say is no. http://www.arri.com/corporate/about_arri/legal/about
  20. dave9

    Electronic Shop for Rent

    TLDR; but I get it that I rattled your chain. I just don't see anyone traveling any distance for this. It needs to be a local search, if Craigslist isn't working then refine that. You have particular requirements and that 1 in a million search will require entertaining 999,999 clowns on average.
Top