Re: A newly working Commodore 720 - many questions...

From: Jim Brain <>
Date: Wed, 22 Feb 2012 12:57:16 -0600
Message-ID: <>
On 2/16/2012 10:49 AM, Gerrit Heitsch wrote:
>    D1 = 1N4148
Why is D1 needed?  In the reverse mode, the optocouple won't conduct, so 
they're no concerns.
>    C1 = 10 nF
I assume it's there to stretch the cycle.  Given the 6.3V transformer 
will have enough forward voltage for most of the half cycle, is the cap 
really even needed?


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Received on 2012-02-22 19:00:05

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