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Valvepower · 23rd Jan 2011, 8:34 pm

Hi,

Agree interesting article, as kalee20 said they always were.

A young trainee at work recently wanted some background on switcher power supplies and I gave him a copy of the In Your Workshop, which describes the circuit and action of the BRC3000 power supply - this was exactly what he wanted as it was all discrete without a control IC.

Seeing this has me thinking about converting my old Dansette Major to ECL86, which has an EL84, this is one of the units that uses a 6.3V filament transformer. It will mean hacking around the PCB but it may be worth it.

Regards.
Terry.

23rd Jan 2011, 8:34 pm	#5
Valvepower Octode Join Date: Aug 2008 Location: Rayleigh near Southend-On-Sea, Essex, UK. Posts: 1,879	Re: UY85 UL84 Amplifier Hi, Agree interesting article, as kalee20 said they always were. A young trainee at work recently wanted some background on switcher power supplies and I gave him a copy of the In Your Workshop, which describes the circuit and action of the BRC3000 power supply - this was exactly what he wanted as it was all discrete without a control IC. Seeing this has me thinking about converting my old Dansette Major to ECL86, which has an EL84, this is one of the units that uses a 6.3V filament transformer. It will mean hacking around the PCB but it may be worth it. Regards. Terry.