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29 August 2008, 07:17
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#1 |
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Registered User
Join Date: Jan 2005
Location: 62-France
Age: 56
Posts: 413
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dead power supply modem
hello,
the power supply of my modem is dead. dead: input: 220v-50hz-200ma output: 9v-1500ma- ~ new: uniross: input: 220v-50hz-350ma output: 9v - 1200ma - (see symbol explanation) continu: (symbol explanation) horizontal bar upper part litle horizontal babrs lower part original modem: input: 220v-50hz-9v - 1000ma to 1500ma - ~ can I use the uniross power supply (see symbol) for my modem when the dead original power supply give ~ ???? |
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29 August 2008, 09:14
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#2 |
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Registered User
Join Date: Jul 2007
Location: Ghent/Belgium
Age: 43
Posts: 247
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if i understand your explanation correctly it might not work as your old one had Alternating Current (~) while your new powersupply outputs Direct Current (=) that and the maximum current it gives is 300 mA lower than whats needed
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29 August 2008, 23:46
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#3 |
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I hate potatos and shirts
Join Date: Oct 2007
Location: Sao Leopoldo / Brazil
Age: 58
Posts: 3,482
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Any step transformer with 9V A(lternate) C(urrent) will be OK. Notice 9Vcc is not OK, since the step transformer always have a little less voltage (say about 8.5V AC) and the raised voltage is done by the capacitors after rectification. Or the transformer have a +5V over the output and use a regulator inside.
Go to a electronics shop and buy a proper replacement. |
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31 August 2008, 07:44
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#4 |
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Registered User
Join Date: Jan 2005
Location: 62-France
Age: 56
Posts: 413
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hello,
what are the specifications of your power supply modem ??? Alternating Current (~) allways: 110-220V. Direct Current (=) allways: 3-6-9-12V. Maybe the made in china power supply for my modem has wrong specification written on the power supply. universal adaptor uniros : ref: u0152181. |
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31 August 2008, 20:01
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#5 |
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I hate potatos and shirts
Join Date: Oct 2007
Location: Sao Leopoldo / Brazil
Age: 58
Posts: 3,482
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Nope. External modems usually use 9 to 12V alternate current. I still have an old (for me) Boca 33.6 around and it uses 9V ac (rectification is done inside the modem).
Those mini step transformers are quite common in electronic shops. Just ask for one who is at least 1A capable. |
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