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Published on 2006-11-29 17:01 Only look at the author

Phone power supply issues [Copy link]

If anyone has worked on or been exposed to the power supply of a telephone, please send me a circuit diagram for me to study. Thank you!
(It would be better to have a simple explanation. I am working on a USB phone recently. The functional requirements require that in addition to USB power supply, it must also support telephone line power supply. Thank you for your advice.)

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What phone? A regular phone or a cordless phone? Details Published on 2007-2-13 19:18

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Published on 2006-12-6 12:30 Only look at the author

I thought you had it.

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Published on 2006-12-17 01:27 Only look at the author

If you need anything, please contact me. QQ: 228727092

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Published on 2006-12-17 12:38 Only look at the author

If necessary, I can provide

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hck

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Published on 2007-2-13 19:18 Only look at the author

What phone? A regular phone or a cordless phone?

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