Re: (Hopefully) simple Battle Zone problem

On Wed, 14 Oct 1998, Christopher X. Candreva wrote:

> On Wed, 14 Oct 1998 jwelser@ccwf.cc.utexas.edu wrote:
>
> > This is the classic HV diode (I think the original number is
> > H1812 or H1809, depending on which monitor you're looking at -- I forgot
> > already!) that can be replaced by an SK7333 or NTE527A.
>
> H1812. Looks like NTE527A is discontinued. NTE's cross reference no longer
> returns anything for H1812. Looks like SK7333 is it.
>

        The original number in a 19V2000 is a H1812.

        I looked at the specs on the NTE homepage, and I found 3 or 4
different part numbers that would work.

        The two most important parameters are:

        The HV voltage (PRV of the diode) is 14.5kV on a 19V2000
and 12kV on a G05. The current drawn by the anode is 100uA on a
19V2000. I don't have the number for the G05, but I'm sure it's
similar. Thus, the average If of the diode must be at least that
much. The HV can be within about +- 300V of its nominal value, and
most of the replacements havea Vf of in the 50 - 100V range.

        So, the NTE527A and SK7333 aren't the only parts that
will work....although I forget the list of parts that will....

Joe
Received on Wed Oct 14 17:21:22 1998