[Amps] Bird PEP board

[Steve Katz]

If the IC draws 2mA and requires 6v, why not eliminate the regulator and
just use a 1.5k resistor in series?

WB2WIK/6

"Each success only buys an admission ticket to a more difficult problem." --
Henry Kissinger

> -----Original Message-----
> From:	Roger D. Johnson [SMTP:n1rj@pivot.net]
> Sent:	Thursday, May 02, 2002 6:10 PM
> To:	Radio WC6W; amps@contesting.com
> Subject:	Re: [Amps] Bird PEP board
> 
>  The mystery of the "Battery Eating Bird" has been solved! I drew
> out the circuit and found that each battery has a Zener shunt
> regulator circuit associated with it. A 6.2 volt Zener through
> a 150 ohm resistor! The damn regulator gobbles up about 18 ma
> to regulate 2ma for the IC! The engineer that designed this must
> have worked for Eveready. 
>  I'm wondering if this circuit really has to be regulated at all.
> If so, perhaps a low dropout series regulator would be much more
> efficient.
> 
> 73, Roger
> 
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