12 vdc

12 vdc

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Subject Author Date
12 vdc Rich 03-19-2008
---> Re: 12 vdc Bob La Londe03-19-2008
|--> Re: 12 vdc Frank Olson03-19-2008
---> Re: 12 vdc Just Looking03-20-2008
| `--> Re: 12 vdc Bob La Londe03-21-2008
Posted by Rich on March 19, 2008, 7:15 pm
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Who's a good tech?



I need a circuit drawn Using a 12 V DC 8 AH batteries, zener's and
components to get 9 Volts DC for a 1 amp load.

And 7.6 Volts DC for a 2 amp load.



Would some one draw one?



Richard E. Lenker





Posted by Bob La Londe on March 19, 2008, 11:05 pm
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Zeners? Why not just use resistors?

How precise must the voltages be?


> Who's a good tech?
>
>
>
> I need a circuit drawn Using a 12 V DC 8 AH batteries, zener's and
> components to get 9 Volts DC for a 1 amp load.
>
> And 7.6 Volts DC for a 2 amp load.
>
>
>
> Would some one draw one?
>
>
>
> Richard E. Lenker
>
>
>
>



Posted by Rich on March 19, 2008, 11:13 pm
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Not that special
Give it a try



> Zeners? Why not just use resistors?
>
> How precise must the voltages be?
>
>
>> Who's a good tech?
>>
>>
>>
>> I need a circuit drawn Using a 12 V DC 8 AH batteries, zener's and
>> components to get 9 Volts DC for a 1 amp load.
>>
>> And 7.6 Volts DC for a 2 amp load.
>>
>>
>>
>> Would some one draw one?
>>
>>
>>
>> Richard E. Lenker
>>
>>
>>
>>
>
>



Posted by Frank Olson on March 19, 2008, 11:26 pm
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Rich wrote:
> Who's a good tech?
>
>
>
> I need a circuit drawn Using a 12 V DC 8 AH batteries, zener's and
> components to get 9 Volts DC for a 1 amp load.
>
> And 7.6 Volts DC for a 2 amp load.
>
>
>
> Would some one draw one?
>
>
>
> Richard E. Lenker
>
>
>
>


Why not just buy an off the shelf adjustable power supply. Altronix
used to make one but I haven't seen in on my local distributor's shelf
for a while. You might want to check their website at
http://www.altronix.com.

Posted by Jim Rojas on March 19, 2008, 11:44 pm
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Just series in 1 watt zeners until you get a voltage you can live with.
4 or 5 zeners should produce roughly 9 volts. Just use a meter as you
connect each one.

Jim Rojas




Rich wrote:
> Who's a good tech?
>
>
>
> I need a circuit drawn Using a 12 V DC 8 AH batteries, zener's and
> components to get 9 Volts DC for a 1 amp load.
>
> And 7.6 Volts DC for a 2 amp load.
>
>
>
> Would some one draw one?
>
>
>
> Richard E. Lenker
>
>
>
>


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