WTD: A Carbon Microphone Input Transformer

Richard & Donna Wayne rwayne at VNET.NET
Tue Aug 6 10:10:35 EDT 2002


Hello All,

I am restoring a Harvey Wells Bandmaster Senior and I need a
replacement carbon mike transformer for it.  This transformer is
for a Single Button mike and has a center tapped secondary.  I believe
the nominal impedance for the primary is around 200 ohms and 400K
for the center tapped secondary.  A Stancor model A4742 has these
characteristics.

I can probably use any single button mike transformer that has a
center tapped secondary to drive push-pull stage grids.  I believe some
of the old surplus military equipment used this arrangement.

Please reply if you have for sale something I can use.
Thank you.

Best regards,
Richard W4LN

-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------

Subscription control - http://www.tempe.gov/lists/control.asp?list=BOATANCHORS
To post - BOATANCHORS at LISTSERV.TEMPE.GOV
Archives - http://interactive.tempe.gov/archives/BOATANCHORS.html




More information about the Boatanchors mailing list