power supply question

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ed
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#1 power supply question

Post by ed »

apologies for the naive question

is it acceptable practice to take a spur output from a regulated circuit, as in the diagram below. I wanted to know if taking 11 to 12v from the rail before it goes into the regulator might upset the regulators output.

the tx is 9v and the whole load will be no more than 50ma inclusive
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colin.hepburn
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#2

Post by colin.hepburn »

Don't know if this link with help
http://sound.westhost.com/project05b.htm
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Nick
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#3

Post by Nick »

I do it without any problem. Only problem would be if you pull enough current to drop the voltage below the point the regulator can regulate.
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#4

Post by ed »

Nick wrote:I do it without any problem. Only problem would be if you pull enough current to drop the voltage below the point the regulator can regulate.
that's just exactly what I was hoping you were going to say
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#5

Post by brig001 »

Ed, I bet you know this, but just in case, or if someone copies the circuit...
The rectifier connections are wrong.

They should be:

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Dave the bass
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#6

Post by Dave the bass »

"All over it like a dalmatian..." Well spotted that man.

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#7

Post by ed »

snigger, I'll just blame the in-laws then, they brought me a big bottle of moonshine, fresh from the garden still........

it takes no prisoners....

thanks Brian, not exactly sure what that circuit would produce
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Paul Barker
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#8

Post by Paul Barker »

I can just picture you on all fours feeling for your contact lenses which won't do you any good if you find them because the moonshine has made you half way closer to total blindness.
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