[sdiy] Quick voltage regulator question

[John Luciani]

On 4/30/06, Jim Bob <c10h14no2i at yahoo.com> wrote:
> Im using the Blacet midi sync ic.  It needs 5v.  Ive got an lm7805 5v
> regulator.
>  I haven't used a voltage regulator yet in any of my synthing, so am not
> sure if it will handle being fed from 15 volts.  Can I wire it up as +15 to
> regulator in to midi sync ic?

The regulator will handle the 15V on the input but it may not handle the power.
A 7805 in a TO-220 package (without a heatsink) should be able to dissipate
around 1-2 Watts. Since you have a 15V input the voltage drop across the
regulator will be 10V. Power dissipation of 1-2Watts would mean a maximum
output current of 100-200mA.

(* jcl *)



>
>  Thanks!
>
>
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