Re: TI-H: AC adaptor
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Re: TI-H: AC adaptor
At 07:47 AM 12/16/96 -0600, you wrote:
>>TI>I'm trying to build an AC adaptor for my 85. I have an adaptor that
>>outputs
>>TI>6V DC (which is what the 6 AAA batts output) but it outputs that at (I
>>think
>>TI>300mA. How do I reduce that to the level that the calc needs? I've tried
>>TI>hooking it to my calc by connecting the leads directly to the battery
>>TI>terminals. It will turn on and not lose the memory, but the screen is
>>TI>totally "lit up". Even at the lowest contrast level, you can't see
>>anything
>>TI> I need to put in something to reduce the amps, but I'm not sure what.
>>
>> If it's a multi-adapter, set it to 4.5 volts.. that's how I use
>>mine..
>>
>>Zarquon
>>Sysop of Imperial Realm (410) 799-8616
>>http://members.tripod.com/~Zarquon/ zarquon@gaianet.net
>
>NO. First the 85 uses 4 not 6 AAA batteries, and at 1.2 volts each that
>adds up to a total of 4.8 volts. So, that's the reason 4.5 volt adapters
>work. They're close enough.
Actually, I think he was talking about alkaline-type batteries which are 1.5
volt
1.5v x 4 = 6v
They do drop a little under that, but to a normal person just looking at the
cover to the battery, they're 1.5 volts... :-)
-Pete
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