Dreamcast WiFi modem

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Raen
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Posts: 550
Joined: Sun Dec 09, 2012 7:29 pm
Location: Portugal

Re: Dreamcast WiFi modem

Post by Raen »

uglybuddy6 wrote:I used a 1N4741A which is 11V and 1W . For PAL I think a 1N4746A should work that is 18W. I bought mine through amazon it came in a pack like this. https://www.amazon.com/Chanzon-Assorted ... 07BTKVRG8/
Yeah, nevermind, I didn't notice you posted the component list in the 1st page and that yours wasn't PAL, doh!

So you're applying at least 11V to the telephone line instead of the strandard 9V?
I bought 9,1V 1,3W zener diodes as I'll try a different approach. I'll try to build a LVI with 9V and 18V switch, as I have both NTSC and PAL modems.
Last edited by Raen on Thu Dec 24, 2020 7:35 pm, edited 1 time in total.
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megavolt85
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Re: Dreamcast WiFi modem

Post by megavolt85 »

Raen wrote:I'll try to build a LVI with 9V and 18V switch, as I have both NTSC and PAL modems.
9 volts is the minimum voltage at which the NTSC modem works stably
18 volts is the minimum voltage at which the PAL modem works stably
but despite this, the voltage in a real telephone line is 48 volts
you can safely use LVI at 18 volts for all modems
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Raen
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Joined: Sun Dec 09, 2012 7:29 pm
Location: Portugal

Re: Dreamcast WiFi modem

Post by Raen »

I've seen a bunch of LVIs with a 9V and 18V switch, but from your words I see there's no need for that. Thanks!
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