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Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

capacitors

  1. G

    Why do we need these components?

    Why do we need 10 ohm resistors R6 and R7, I've never seen them used in similar situations. Also, C10 22uf capacitor, why is it there , when the datasheet calls for a 22 uf capacitor on the output only? Lastly, is c11 1 uf necessary , it seems that's it is not large enough to make a difference...
  2. T

    Console Motherboard Circuit Question

    Hi, I am new on this forum, but I hope to learn more about this. I am working for the last 1,5 years with Motherboards of an old game console, the Dreamcast. Sometimes I have faulty motherboards. I replace the capacitors if needed and hope I can get it up and running again. I am currently...
  3. S

    Need help determining voltage needed by capacitor

    Hello, Today I acquired a Sony HCD-C770 5 disc DVD changer/mini amp that is non-functional. When I power it up, the standby light just flashes repeatedly and the machine refuses to do anything. Upon checking the internet, I found forum threads discussing a certain electrolytic capacitor that...
  4. W

    Current rating of capacitors

    This is probably an obvious question, but if I were to discharge 5 kV from a capacitor bank through a circuit with a resistance of 100 ohms, that capacitor would have to be able to withstand 500 Amps right? If the discharge pulse was VERY fast (milliseconds) would this make a difference...
  5. S

    Graphene, batteries and capacitors

    Hi there, It's widely predicted that graphene is going to revolutionise batteries and capacitors and hence the convenience of using gadgets, electric cars... etc I would like to build, and play with, a home made capacitor using graphene. However, i have no idea where to buy graphene or...
  6. robertmaks

    Capacitor List/Rating Website

    Hi, I recently made a website for seeing the quality of capacitors and thought some of you guys would be interested. I put a HUGE list together rating capacitors and giving a popular application of the capacitors. I made the site myself and wrote it in html; and I am running it on my own server...
  7. B

    Difference in Capacitor Series

    I have tried to look for information online about this but I always get information on connecting capacitors in series. What I am looking for is what the different series of capacitors are. IE. M, NHG, FM, FC, FK and why you would choose one over the other. Thank you for your help.
  8. J

    How to light an incandescent bulb using capacitors?

    I am just learning and playing with electronics and I want to light a bulb with one or more capacitors for a few seconds. The bulb would be 25 watts, 250 Volts. So I would like to know the values of the capacitor that I need and what kind they should be.

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