PART ID PLEASE

[Robert Groh]

Assuming the SG-7 seems to be very close to the SG-8 (which I have) and uses the same transformer. From the schematic, the power transformer has a 117VAC primary (not too surprising) and the secondary has a 6.3 VAC winding for the two tubes (a 6C4 and a 12AU7) and a 120 VAC secondary. I'm totally guessing at the tube filament draw (I'll leave you to look up the tube charts) but it probably 400 mA each.  The B+ current drain is maybe 10 to 20 mA.  So maybe 6.3 VAC at 1A and 120VAC at 20 mA for the transformer.

Hope this helps.

73
Bob, WA2CKY




________________________________
From: k2sse <k2sse at EMBARQMAIL.COM>
To: HEATH at LISTS.TEMPE.GOV
Sent: Saturday, August 8, 2009 9:51:34 AM
Subject: [HEATH-TEMPE] PART ID PLEASE

Have a Sig Gen model SG 7 with bad Power Transformer Heath part 
54-2 circa 1953 or so.
Can anyone give me specs on this Transformer?

Thank you
Al

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