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Looking for a schematic for the LSD2 which is, as far as I know,
two-C3's. So a C3 schematic might work for me.

Thanks

[Scott Dorsey]

wrote:
Looking for a schematic for the LSD2 which is, as far as I know,
two-C3's. So a C3 schematic might work for me.

I think you're going to have to draw it out yourself, but I bet it's
not much different than the usual Feilo transformer-output designs.

I don't know if that one has a dc-dc converter in it or not but you
can just sort of thing of that as being an individual block that you
don't need to look inside unless it's broken.

There isn't a whole lot inside these things, you can take a multimeter on
the continuity beep function and draw everything out in a pretty short time.

In a lot of cases, the US importers don't even have the schematics for them,
or they have schematics that are several revisions behind the actual
production.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."

[Mike Rivers]

On 9/29/2011 10:08 AM, Scott Dorsey wrote:

I think you're going to have to draw it out yourself, but I bet it's
not much different than the usual Feilo transformer-output designs.

I don't know if that one has a dc-dc converter in it or not but you
can just sort of thing of that as being an individual block that you
don't need to look inside unless it's broken.

No output transformer, and yes it has a DC-DC converter,
which puts out about 120 volts. It was broken in my LSD-2.



--
"Today's production equipment is IT based and cannot be
operated without a passing knowledge of computing, although
it seems that it can be operated without a passing knowledge
of audio." - John Watkinson

http://mikeriversaudio.wordpress.com - useful and
interesting audio stuff

[Scott Dorsey]

Mike Rivers wrote:
On 9/29/2011 10:08 AM, Scott Dorsey wrote:

I think you're going to have to draw it out yourself, but I bet it's
not much different than the usual Feilo transformer-output designs.

I don't know if that one has a dc-dc converter in it or not but you
can just sort of thing of that as being an individual block that you
don't need to look inside unless it's broken.

No output transformer, and yes it has a DC-DC converter,
which puts out about 120 volts. It was broken in my LSD-2.

If it has no output transformer, it's more or less a Schoeps circuit with
the FET floated between the bases of two transistors.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."

[Mike Rivers]

On 9/29/2011 3:07 PM, Scott Dorsey wrote:

If it has no output transformer, it's more or less a Schoeps circuit with
the FET floated between the bases of two transistors.

Eggzackly

--
"Today's production equipment is IT based and cannot be
operated without a passing knowledge of computing, although
it seems that it can be operated without a passing knowledge
of audio." - John Watkinson

http://mikeriversaudio.wordpress.com - useful and
interesting audio stuff