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  1. dave9

    Power supply for Apogee AD16x audio converter

    lol, that is not an other angle, it is just the same pic rotated 90 degrees. They look the same to me but it is hard to tell with them at different angles to your original pic. Again if the only difference is the additional capacity, that is not a problem, and could even make it superior by...
  2. dave9

    Power supply for Apogee AD16x audio converter

    It looks like you have made a mistake and uploaded yours twice, once circled and once not. If the replacement is exactly the same except has an additional capacity where you circled, (C19 and or C20) that is fine, looks like the design originally intended to have those before the bean counters...
  3. dave9

    consolidating individual LED interior-lighting drivers?

    As you've stated, there's lots of lighting hardware out there. You'd need to start with providing as much info and links to what you're considering as possible. Decent drivers usually are current regulated, they can generate a certain range of output voltages, so you match that to the sum...
  4. dave9

    Power consumption of reverse-polarity protection diode

    I would contact Tadiran and give them the power characteristics of your circuit and ask for advice. Normally they do prescribe using the diodes.
  5. dave9

    Dodgy Dishwasher Controller

    ^ Isn't the element itself just a large resistive metal rod that can't short out unless there is some other mechanical damage to the assembly causing it to short against something else? I'm trying to understand how it can short out internally.
  6. dave9

    Dodgy Dishwasher Controller

    ^ The hosting site is doing something screwy, softening the image after downsampling it. Click the link on the pic and it becomes a nice, crisp, 16MP resolution. Unfortunately, I don't see any visual signs of a problem besides the burn mark on the resistor itself... can't even see the traces...
  7. dave9

    Nice to see something like this once in a while!

    I too, like the color green. My genetics make me feel like I'm back in a jungle full of plants and man has not trespassed on this area so I am still safe to remain here. The straight lines make me feel like there is a clear line of escape if a predator encroaches and the shiny metal...
  8. dave9

    Two power sources...

    In the future it would be helpful if you would start out mentioning things like this low current requirement. You could test the relay, it will probably work fine with the ~0.6Vf drop of a common silicone diode. However there seems to be still more to this than you mention, as 500mA, let alone...
  9. dave9

    Charging a battery from well pump circuit (cycles on/off 120v)

    You do not need to, nor should you, snake low voltage wire through the conduit. You can get away with just buying burial rated low voltage DC cable and make a new run out there parallel to the AC conduit. There are machines that take a spool of cable and dig a slit in the ground and place the...
  10. dave9

    Schematic for the philips BT100 bluetooth

    Ask the seller what the Out + and Out - pads do, they weren't on the listing and your picture is too blurry and dark to see if they just connect to the B+ and B - or have a different function, or you could use a multimeter or look at the traces to see if they connect to each other. Without that...
  11. dave9

    Two power sources...

    There are many suitable diodes, what you choose could depend on availability and cost in your region. Since the voltage is only 12VDC, you should not have trouble finding a schottky diode rated for higher than this, but you did not mention the current of the circuit. A generic suggestion would...
  12. dave9

    Capacitor Substitution

    Yes 1000uF, 200V or higher rated would be fine. Why are you replacing them? These are at AC line frequency and generally have an easy life, rarely fail unless there was a huge surge that came in, and a surge that big would probably take out the switching transistor(s) if not the bridge...
  13. dave9

    SuperCap Charging and Delivery System using Solar Panels

    You seem to be insisting upon something that is a bad design and should be scrapped in favor of a better design, using batteries. If you insist on using what you have, I already answered that. Build it, test it, compare to requirements. The other way around is the correct way to do it...
  14. dave9

    Short-haul OTA TV rebroadcast?

    There is some setting /feature in it to use (DLNA?) devices, it will take a stream from tuner boxes. Maybe, we have no idea how many simultaneous users you'd have or how much of your bandwidth you'd be willing to sacrifice to that. It depends on how many tuners are in the box you pick. I am...
  15. dave9

    Short-haul OTA TV rebroadcast?

    Multiple high quality transmitters for each frequency does not seem affordable, and possibly not legal if you're not licensed for each, and I wonder if it's even possible to get a license to rebroadcast the same frequency already being used in an area, or even for a different frequency if you're...
  16. dave9

    8-pole connectors

    Depending on how critical this connection is and how much of a hurry you're in to receive it (if shipped from China), you can get a pair of mating connectors (including the pins) much cheaper on ebay. Examples...
  17. dave9

    8-pole connectors

    It might help if you described the application and use scenario, but personally I would be looking at a lower wire gauge than 30-34 for an outdoor(?) connection for durability more than current capacity and would consider silicone insulated wire. You might open up more choices in connectors if...
  18. dave9

    Help Identify Please

    Test each component. There is no reason to assume any are bad if they test OK. You can measure, not "worry" about things like resistors. Do test, but if you insist on buying a lot of parts then at least you have some leftover parts for a different project.
  19. dave9

    Help Identify Please

    Insufficient info. is the control board known bad? Rebuilding a board generally does not entail replacing things that aren't failed and don't have a finite lifespan. Your pictures are fairly poor so I can't make out what I'm seeing for sure, but you would generally observe some burn or severe...
  20. dave9

    Powering Electronic Match

    Total wattage is not linear like this. First you have picked a battery with high internal resistance, which in itself limits current, but then by putting them in parallel you divide that internal resistance. Second if put in series, the internal resistance of the series increases. Third as...
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