Search results

Search Forums New Posts
  1. dave9

    Reverse bench grinder

    ^ Agreed. I could see putting a wire wheel, buffer or sanding drum in a chuck attached to a grinder, but then it wouldn't matter which way it turned. Even so if the chuck were put on the other end of the grinder then it would turn the opposite direction. Plus, corded drills aren't all that...
  2. dave9

    Reverse bench grinder

    What exactly does this mean? You converted it into what? What are you needing it to do now? There is probably a ready made tool that does what you need done and that works much better at it.
  3. dave9

    Does mAh rating of a battery affect the device at the same rated voltage?

    These phones trickle charge the batteries, and overcharge them most of their life. You will get more lifespan out of them if you leave the phone off the charger base once it is fully charged. Low mAh cells were chosen because they tend to survive more cycles and overcharge (and are cheaper...
  4. dave9

    Unified power source

    What you have drawn so far isn't even a good start. It also doesn't explain why you would need a dual polarity dc output for a socket (presume you mean an AC outlet), USB, a nightlight, or a switch. It's generally a good idea to become competent at this level of circuitry using low voltage DC...
  5. dave9

    circuit breaker switched off from distance ?

    Do you mean that your exterior main circuit breaker is in a locked cabinet, or it is unlocked so anyone can just open it and flip the breaker off? If he cannot gain access to the inside of the breaker box, I don't think he could heat it sufficiently to trip it without noticeable external signs...
  6. dave9

    Help Needed: Vizio Power Supply Board

    Checking voltage is useful, but first have you observed anything obvious? Vented capacitors are one of the #1 faults on monitors and TVs, and relatively easy to fix (with upgraded parts so it's less likely to happen again) if you can solder. However I found a couple sources that show they have...
  7. dave9

    Circuit Card - Black Marks ?

    Yes dark could be glue around the capacitors but I think I also see some darkening around the diode in the middle next to the blue (relay?) and around the transistor (or triac, or maybe a diode just to the southeast corner of it) up near the top left of the board. None of that looks indicative...
  8. dave9

    Circuit Card - Black Marks ?

    This circuit does not look like it's crucial for the basic operation of spinning a fan. More information about fan make/model/device might help. I looked up "Vent-Axia" and they appear to make HVAC systems which would be consistent with my suspicions below. It looks more like a control board...
  9. dave9

    Toshiba VCR Blown Fuse

    Probably a blown diode or transistor in the power supply circuit. Yes replacing the fuse is not likely to be the end of it, most likely will either allow a shorting component to suffer further damage or just blow again. It is not likely to cause a fire unless you do something weird like...
  10. dave9

    Pioneer sa1290 input selection prob.

    Open and inspect it. Look for burn marks, cracked components, vented capacitors. A little browning of construction adhesive holding some parts down isn't necessarily a problem. After that I would probe the low voltage supply subcircuit to see if it's working properly. Might not hurt if you...
  11. dave9

    Change in site ownership

    ^ I wondered the same thing so I went and took a look at some of EETech's sites and they don't look too bad, BUT it could be that my universal preemptive nuke ads from orbit strategy is already blocking them.
  12. dave9

    What do you reckon the most produced component is?

    If we're being this vague about terms, then the answer is rice. The question did not include limit to "electronic".
  13. dave9

    Power cuts and my solar power?

    I go camping all the time and have no problem doing without electricity or any type of fuel (except to get there, and not counting firewood as fuel), though I am ignoring having a few flashlights along with me. Regular everyday life, 900W (really 700W?) won't power so many things I own, even if...
  14. dave9

    What do you reckon the most produced component is?

    I'm changing my answer to "wire". :D
  15. dave9

    Power cuts and my solar power?

    I wrote modern standard of living, and within the assumption that the average person doesn't live alone so that increases consumption. Plus, 1.1kwh best-case is a lot lower average. If you don't want that, it's your right to live however you choose but personally, I'd just move to a different...
  16. dave9

    What do you reckon the most produced component is?

    42 Now what useful thing will you do with this knowledge?
  17. dave9

    Wanted: Push On Hook Clip Adapter

    My 3rd link was that type, and there are others on ebay too, cheaper than $24 a pair. Some are both push-on, and threaded to screw on at the end of the push-on range.
  18. dave9

    Wanted: Push On Hook Clip Adapter

    I'd imagine you can get the clips you solder wires to, for about $1 or $2 delivered from China, and the same for some banana plugs (providing you don't expect high quality for dirt cheap), then add whatever wire type and length you need. You might also find assembled combinations of the above...
  19. dave9

    Power cuts and my solar power?

    Obviously you can't, 1.1kwh/best-case is nowhere near enough for a modern standard of living. A modest battery array is a good idea, just enough to survive, power critical things. You can pour a lot of money into more solar panels, pour some money into a solar water heater, pour some money...
  20. dave9

    Adding Bluetooth to Older Car Radio

    Not replace the pickup head. That is a very low level signal that gets preamp'd to a line level signal before the amp stage of the stereo. The preamp output is fed to a mux or manual input selector switch, and that is where you want to sever the cassette input and substitute the BT module's...
Top