Re: Battlezone pt 2:

Christopher X. Candreva wrote:

>1) Is there any possible reason for haveing a diode between +15 and gnd ?
>Black band to +15 ?
>
>Someone put one on this board, a 1n-270, from one of the holes where the
>X-size pot should go to the gound plane.
>
>As expected, removeing it had no effect on the operation.
>
>

Not really a bad idea, it's a reverse polarity protector. In case of
+15 failure it would keep the +15 line on board from going more than a
diode drop negative and help to protect ICs and electrolytic capacitors
that connect to +15.

>2) In the manual, CR11 calls for a 1n-100, however my board has a 1n-270 in
>that location.
>I'm trying to see if they are actually compatible -- I found a datasheet for
>the 270, but can't find one for the 1n-100
>
>http://www.ee.washington.edu/stores/DataSheets/diodes/1n270.pdf
>
>

Either way they cross to an NTE109, so whatever you have, use it.

>
>==========================================================
>Chris Candreva -- chris@westnet.com -- (914) 967-7816
>WestNet Internet Services of Westchester
>http://www.westnet.com/
>

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Received on Sun Feb 1 01:13:11 2004