Search results

Search Forums New Posts
  1. kellys_eye

    Dell D600 Laptop Speaker

    Take the speaker out of it's housing. It has TWO connections on it. Pin 1 is the speaker. Pin 2 is the speaker.
  2. kellys_eye

    Stepping up the voltage for a Geiger Counter

    Yes you need DC but the idea is to use a transformer to multiply the AC upwards (using it in reverse) then feeding the resultant high voltage AC into a multi-stage rectifier ciruit (multiplier) where you end up with high voltage DC. For example - use a 240V - 6V transformer in reverse ad put a...
  3. kellys_eye

    24-30pin connector for digital picture frame

    How do you get the backlight to work?
  4. kellys_eye

    Motor for back and forth

    Depends on the motor - some come with the movement 'inside' (single wiper cars) others rely on external linkages (dual wipers).
  5. kellys_eye

    What Part is This?

    It's a crystal (resonator). Usually around 4.43MHz.
  6. kellys_eye

    Motor for back and forth

    Wind screen wiper.
  7. kellys_eye

    Help with current limiting on etrike

    When the charger is running the output will be split between the load and the batteries. The load will take what it needs up to the maximum the charger can deliver then the batteries will provide the 'remaining' current - assuming it is required. When the load isn't taking 100% from the...
  8. kellys_eye

    Component recognition

    The resistor doesn't 'blow' without a reason. Something caused it to go dud. Have you found out what?
  9. kellys_eye

    What would be the best soldering iron for $200 and under?

    In respect to the OP's original question though..... You certainly don't need to spend much to get soldering functionality - indeed you can spend 'zero' and learn how to do it 'properly' with a $5 iron. Spending 'up to' $200 won't make a bad solder-er a good solder-er. If your soldering...
  10. kellys_eye

    Help with current limiting on etrike

    There's nothing wrong with using the Honda generator to power a charger connected to the batteries - this gives you the same functionality i.e. movement via battery or generator but the generator is used to deliver both the locomotion AND charge the batteries. What you then have to contend with...
  11. kellys_eye

    24-30pin connector for digital picture frame

    The interface board connects directly to the LCD via its (supplied) LVDS cable and you won't be able to extend it (easily) - not that I can see why you'd want to???? The interface boards accept VGA/HDMI/Composite inputs (depends on model purchased) so you'll need a signal splitter to take the...
  12. kellys_eye

    Component recognition

    It's an 18Ω resistor. Have you tested it? Looks to be about 5W or 7W and may even be of the 'fusible' variety.
  13. kellys_eye

    What would be the best soldering iron for $200 and under?

    I mentioned elsewhere that AliExpress (IIRC) have a sales policy built around an Escrow facility they offer. As such, your purchase is made via their Escrow and the retailer is only paid on successful receipt/completion of the sale. If you have any problems with goods you can claim against...
  14. kellys_eye

    Fishing trolley will not STOP

    Similar in concept to many golf trolleys - probably with a similar end result too (no fish or no hole-in-one)! Usual fault is the MOSFET(s) go short-circuit. That's the two three-leaded devices (black squares) at the end of the board. Simple to replace. It 'may' be something else but you can...
  15. kellys_eye

    Homework help!

    Rules state we won't 'do' his homework but until we know the question we can't determine whether this is what we'll end up doing or not! We can certainly point him in the right direction if you care to let us in on the details though....
  16. kellys_eye

    What would be the best soldering iron for $200 and under?

    .... confession time. I DO have a temperature controlled iron :D - I bought one of those cheap Chinese versions with a build-it-yourself controller. I only did it to get a specific 'spend' on some ordering I did but I built it, attached an old laptop PSU to it, and it works perfectly well. It...
  17. kellys_eye

    ID Potentiometer

    10 turn pots can be had all over the place these days but getting a QUALITY 10-turn pot isn't cheap. Such as you have there is worth keeping hold of. Not all 10-turns have the full resistance across top/bottom connections. Measure all combinations of terminal and the HIGHEST reading will be...
  18. kellys_eye

    4 Channel Car Amp not outputting

    Great news!
  19. kellys_eye

    Front-panel mounted USB and SD card reader PCB-sockets

    Find a junk PCI USB extension board - they usually have 4 or 5 PCB-mounted sockets fitted. There are also PC back-plate-mounted USB sockets often found in motherboard kits so you can fit the 'extended' USB connections to the rear of PC cases...
  20. kellys_eye

    Dell D600 Laptop Speaker

    A speaker will only have two wires. The pinout should be pretty straightforward! You can figure out it's power handling capability from the audio specifications of the laptop.
Top