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Aan

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Posts posted by Aan

  6. 0-30 Vdc Stabilized Power Supply

    in Projects Q/A

    Posted



    Also read this: http://www.electronics-lab.com/forum/attachments/Digital_Panel_Meter.pdf

    It's true that you need to connect a load to the output. Read this to understund how to current limiter works.



    I can't access to this file http://www.electronics-lab.com/forum/attachments/Digital_Panel_Meter.pdf

    Regards,

  16. Over Current Relay

    in Datasheet/Parts requests

    Posted

    Hi hotwaterwizard,

    I have the url for the over current relay, but not for the datasheet/manual of it,
    i need help to find where i can buy this device from.

    Best Regards,

    http://www.mitsubishielectric.co.jp/haisei/01sei/data/data02sei_kikaku/relay/tekiyou/index.htm

    * Standard of protected machine

    JIS (the Japan Industrial Standard)
    JIS C 4601 High pressure receiving electricity site connect relay device
    JIS C 4602 Overcurrent relay for high pressure receiving electricity
    JIS C 4609 High pressure receiving electricity site connect direction relay device
     
    JEC (Institute of Electrical electric standard committee standard)
    JEC-2500 Protected machine for electric power (old JEC-174)
    JEC-2510 Overcurrent relay (old JEC-174A)
    JEC-2511 Voltage relay (old JEC-174B)
    JEC-174C High resistant ground type site connect directional relay
    JEC-174D Auxiliary relay for electric power
    JEC-174E Slow-operating relay for electric power
    JEC-174F Comparative operation relay
     
    JEM (the Japanese electrical machinery and appliances manufacturer's association standard)
    JEM 1336 High-tension distribution line site connect directional relay

  20. Inductor in LC filter

    in Electronics chit chat

    Posted

    I recommend a search on google for the type of filter you need.....


    I have searched google and have not yet find any good site to use as reference to build LC filter..

    There's LC filters of all kinds, low/high frequency and of various power levels. For example, you won't use toroid at very high frequencies because of the losses. Each applicarion will require its own selection.


    I build a DC-AC converter with class D amplifier with frequency carrier of 10kHz.

    The amount of current and frequency has a lot to do with selecting the proper core shape (for cross sectional area) and material (for Bsat). How much ripple current can yo live with?


    0.1mAmp..how much ripple current typically find in any design of LC filter ?

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