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  1. B

    pls help need to pass for my finals

    There would be several around using a 555 timer. Operation is not strictly flip flop but it does flip from one setting to another and then another depending on button presses.(or not)
  2. B

    Assistance Identifying component L2

    That will not measure the infinitely small resistance of a few turns of enamelled copper wire, so forget it. Do other as I suggested above.
  3. B

    Assistance Identifying component L2

    I doubt the Op would firstly have the gear to measure that plus it appears burned so again, no deal. 5R6 would suggest 5.6uh. Details on the mosfets not clear in the photo, either Q9 or Q12 which appears to be the same so one could possibly test there. A closer look (better photo) of the coke...
  4. B

    Assistance Identifying component L2

    Inductors rarely if ever fail on their own. If it's cooked as it appears (photo could show this much better) time to start looking else where on the circuit as well.
  5. B

    Rice cooker tripping breaker when switched on (Zojirushi NP-HCC10)

    Best to start your own thread and not hijack someone elses.
  6. B

    Wiring diagram of 18650, HX-3S-01, XW228DKFR4 and a LED strip

    Under certain circumstances, that is even debatable.
  7. B

    Wiring diagram of 18650, HX-3S-01, XW228DKFR4 and a LED strip

    Charge socket does not look correct but difficult to say as image does not show the connections properly. Do you have a link to the parts details? Looks like you have 2 (red) positive leads on either side of the panel socket internal switch and if they are not the correct orientation, your unit...
  8. B

    Seeking advice on new iron/handle for old soldering station (thermocouple sensor type)

    I think you need to look again..................hint 24v....model w2172 Others on different sites recommend the Hakko as I did.
  9. B

    Magnetostriction.

    That plus friction .....nope.
  10. B

    Rice cooker tripping breaker when switched on (Zojirushi NP-HCC10)

    Ok...when testing diodes, you need to have the meter on "diode test" to bias the diode on, which it appears you have done. Then you need to test for forward AND reverse. Youtube will again show how to do, but it appears the bridge is kaput on the negative to AC legs. example ...
  11. B

    Rice cooker tripping breaker when switched on (Zojirushi NP-HCC10)

    DB (first photo) shows dead short on bridge rectifier AC inputs and the negative out. No reading shown for the positive out. If this is the case then remove DB and test out of circuit...plenty of instructions on youtube etc. on how to test. Note that removal needs good soldering ability and a...
  12. B

    Simple Questions for led tv Backlight

    Obviously....only going by the heading Simple Questions for led tv Backlight
  13. B

    Simple Questions for led tv Backlight

    Installing LED backlight is not as straightforward as you apparently think. Might be a good move for you to watch a few Youtube videos on the subject to see what I mean.
  14. B

    Seeking advice on new iron/handle for old soldering station (thermocouple sensor type)

    The old Dick Smith Electronics (DSE) T-2000 looked very similar. They operate on 24v (not sure about your AC part though) and are 48w as far as I know. Some parts are still available but you would need to search.(expensive to boot) but they do last a long time. Stlll use one here. There are...
  15. B

    help fixing fluorescent lamp circuit

    Some one has been fiddling and has everything a-up. 2nd last photo in # 10 definitely not right. Bye bye to at least one tube heater.
  16. B

    Wagner Steam Cleaner Handle Overheating

    What do you think steam is...........???? https://www.tlv.com/en-au/steam-info/steam-theory/steam-basics/types-of-steam
  17. B

    Beginners book

    Talkingelectronics web site....more than you can poke a stick at...all free. https://www.talkingelectronics.com/te_interactive_index.html
  18. B

    help fixing fluorescent lamp circuit

    Perhaps your filter circuit is not working properly. (bad or leaky caps)
  19. B

    Marconi 4461 dial cord nightmare

    May be something here....... http://www.radiotiques.com/services.asp?Tab=Dial+Stringing Good reference for future anyhow. Plus here.......... https://www.thecodemachine.co.uk/Schematics/Search.php?manuf=Marconiphone
  20. B

    Want to make a box that will open at a programmed time.

    Being a dog, they can be quite aggressive (in a nice way) when it comes to food. I'd imagine under those circumstances that anything with a hinged lid would last about as long as it took to feed the first time. I'd be thinking more along the lines of a sliding lid like say in the olden day...
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