2 DVD programs in one
set. 4 DVDs in total, approx. 5 hours total length!
Color, in English (no
subtitles), region-free discs, PAL standard. Most DVD players can
play both PAL and NTSC, but check your manual) PC drives can play both.
PROGRAM 1: SECRETS OF
VACUUM TUBES
· Two types of tubes: directly-heated and
indirectly-heated
· Physical operation and internal construction
of a diode
· Progression from diode to triode, tetrode and
pentode
· Electrodes - cathode, grids, anode (plate)
· Control grid, screen grid, suppressor grid
· Different types of grid geometries
· Ideal diode
· Diode as a rectifier
· Dual rectifier tubes - parameters and limiting
values
· Full wave rectification using tubes
· Internal construction of a few common triodes
and beam tetrodes
· Triode limitations - Miller's effect and
capacitances between electrodes
· Beam tetrode compared to pentode
· Dual triodes - 12AU7, 12AT7, 12AX7 (Ecc82,
Ecc81, Ecc83)
· Triode as a voltage amplifier
· 3 tube parameters explained - gm, Rp and u
(mju) - mutual conductance, plate resistance & amplification factor
· Tube curves and parameters - plate curves,
transfer characteristics
· Linearity and distortion
· Ideal versus real triode
· Ideal versus real pentode
· Load lines and operating point Q
· Reactive loads (loudspeakers) and load ellipse
· Loudspeaker behaviour - impedance vs.
frequency curve
· Odd and even harmonics
· Choosing plate load - the impact on power and
distortion
· Classes of operation - A, AB1, AB2, B
· Biasing
PROGRAM 2: SECRETS OF
VACUUM TUBE AMPLIFIERS Brand new, 2 DVD set (approx. 2 hours and 40 minutes), produced in
Australia This DVD program covers
the use of vacuum tubes in hi-fi (audiophile) amplifiers with some coverage of
their use in guitar amps. It will help you deepen your understanding of vacuum
tube technology as used in the hi-end audio and will serve as a foundation for
your further learning and the mastery of tube audio technology.
Brand new, 2 DVD
set (approx. 2 hours and 20 minutes), produced in Australia
NO RETURNS! Due to the nature of this product, no returns will be accepted. In an unlikely case of any problems with DVDs, faulty disc(s) will be promptly replaced and mailed to you at our expense. We wish you every success with your DIY project and your quest for good sound!