"Patrick Turner" = incorrigible menace to usenet users

Chris Berry wrote:


Can anyone point me in a good direction to find this info?


There is a major problem about trying to use toroidal mains trannies for
PP audio amps.


** No-one ever suggested that the OP use a mains transformer for a tube
bass amp.

The suggestion was that a toroidal tranny wound for the job could be used
to save weight.



If you live in a 110v mains area,


** The OP lives in Europe.


( snip all Turneroid's irrelevant stuff relating to using a mains tranny)



The frequency response of toroidal opts, even mains types
is usually good enough to get to maybe 100 kHz easily.


** This is the only info the OP wanted confirmed.

Hooray !!!!!!!!!!!!!!




So, to sum up, there is no way you can use a mains tranny for
a bass amp, even though you won't need bandwidth above 2 kHz.


** A custom wound toroidal suited to the job of an OT is no problem to get
made.


( snip loads of the Turneroid's boring, self opinionated crap)


I have nothing on Toroidal designs,


** Since RDH4 does not describe them the Turneroid ****head is lost for
info.



because to wind one requires
a special machine,


** So you use someone who ****ing owns one - moron.



and arranging the taps and many winding sections
is a PITA with a toroidal,


** Says a congenital liar who has never seen one being made.


plus the core is very prone to
DC offset currents due to imbalance in the DC flow in each half of the PP
primary.


** So you trim the bias from time to time - no problem for a home brew
amp.


Then there is mounting and varnishing,


** Hey ****head - toroidals use polyester wrap, have done for decades.


and its all too much bother,


** For an 80 year old autistic moron - yes.


OTOH professional transformer winders have no problem - likely knock one
out for you in 30 minutes.





............... Phil