View PDF of Input and
The transformers listed in
the Input and
Guide form the nucleus for a custom transformer production service
catering to the requirements of the local broadcasting and sound
Low level audio
transformers are normally wound on mu-metal cores, although some
specalised types are wound on ferrite. High level audio transformers are
all wound on grain oriented silicon steel. This is usually in the form
of the scrapless E-I lamination, but can also be in wide-window E-I and
Lamination sizes are,
where possible, industry standard and mostly imperial to enable multiple
sourcing, although special sizes and formats are available to order,
particularly in metric sizes.
Bobbins are in a variety
of forms, most usually in the standard slotted cheek form but also in
various printed circuit board mounting forms, depending on the size.
Mounting brackets vary depending on the size of the stack, the smaller
types using the two hole mount wrapover bracket and the larger types
using the four hole mount dual universal window bracket.
Individual data sheets are
available for each transformer type listed in this guide. These sheets
have a photo and mechanical drawing, response, THD and phase plot,
specification panels and an oscilloscope photo of the response to a 2kHz
square wave at a level just below maxium rated output or input.
While the transformers
listed here will satisfy most requirements we will be pleased to discuss
the design and manufacture of a transformer to meet your special