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  1. Martaine2005

    Clicking noise from cd player

    Probably the disc is warped if no other damage can be seen. You can copy the disc to a CD-R and see if that solves it. I used to copy/backup all my bought CDs and store the original only using the copy/backup. Martin
  2. Martaine2005

    How do I measure a material's capacity for ultrasonic media use?

    I have no idea but this information might answer all your questions. Martin
  3. Martaine2005

    Simple offset voltage question

    Ltspice should do exactly what you want. It’s software though. Check it out here. Martin
  4. Martaine2005

    Matching Of Source AC power To Isolation Transformer Primary?

    Have a read of this Digikey article. It might have the information you require. An isolation transformer has identical primary and secondary windings to give 1:1 ratio. A transformer will still have isolation between primary and secondary windings but the voltages will either be higher or lower...
  5. Martaine2005

    One more schematic clarification

    Of course, and the completely obvious pick and place machine. Martin
  6. Martaine2005

    Poneer SX-727 Speakers cutting out.

    This sounds like a typical power supply issue. Check the electrolytic capacitors for bulging tops or signs of leakage. Possibly just dried out too. Also check for dry/cracked solder joints. Martin
  7. Martaine2005

    One more schematic clarification

    Many reasons for 0Ω resistors. Sometimes it’s just cheaper than a wire link. Other times it might just be a weak link to protect the circuit up stream. Martin Martin
  8. Martaine2005

    What is the component

    With the symbol shown, ie: solid lines, indicates to me that It’s an iron core inductor. Broken lines/dashes, indicate a ferrite core. So unless these symbols are being used incorrectly, I’d adhere to the schematic with its symbols. Martin
  9. Martaine2005

    Cable Connectors

    I’m not saying there isn’t a book of all connector types, but I’ve never seen one. Obviously they change and new types become available all the time. You may have more luck specifying the use first ie: Audio, video, computer, Radio (RF), power, Vehicle etc etc. Then look at the specs and keep...
  10. Martaine2005

    What is the component

    Looks to be an iron core inductor. Martin
  11. Martaine2005

    What is quality level and reliability of cheap chinese diodes?

    Unfortunately, buying anything from China directly as opposed to through a reputable vendor is always risky. Fake components are in the millions. My advice would be to change the diodes to known good ones and see if your measurements change. Martin
  12. Martaine2005

    Remove a component with multiple solders

    If that’s all you’ve got, it leaves you with little choice. De-solder a pin at a time. Solder suckers work best by applying fresh solder first. Sounds counter intuitive but it works. Martin
  13. Martaine2005

    Looking for help finding/searching for a "inline DC power plug & jack"

    What about 3.5mm headphone jack? M/F. Martin
  14. Martaine2005

    Looking for help finding/searching for a "inline DC power plug & jack"

    Ok, still don’t know how many wires but will presume 4 as you used two DC jacks. What about mini XLR or locking din connectors?. Much better on the eye!. Martin
  15. Martaine2005

    Looking for help finding/searching for a "inline DC power plug & jack"

    Or of course, some JST connectors?. An image search for JST or JST type connectors brings up a multitude. But you might get more help from the forum members if you include the number of wires and the current requirement from the device. Martin
  16. Martaine2005

    I am new to this forum..

    @Benordst You should be able to view your posts under your account. I tried checking from my phone but couldn’t do it. You’ll need a computer to check I think. Martin
  17. Martaine2005

    Help needed

    Why do I get a feeling that the woo woo section will file this?. Martin
  18. Martaine2005

    Inrush Current for Capacitive Load

    Inrush current is the capacitor charging. Martin
  19. Martaine2005

    Circuit protection

    It won’t hurt having the extra fuse. Similar to countries that have a fuse in the plug and the appliance also has internal fuses. Martin
  20. Martaine2005

    Power Reduction Query

    What RC lorry have you got? It might be as simple as lowering the voltage (cheap toy). The PWM module might not function properly if the lorry’s receiver is proportional. But as already asked, I’ll wait for your answers. Martin
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