PAT 4150-01 Application: 300B 30
W |
PAT4150-00.pdf |
| |
 |
| 300Bs are
often are used in Single Ended configuration, however this transformer offers the
possibility of Push Pull application with this famous power triode. The primary impedance
is 3500 Ohms. The secondary impedance is 4 Ohms, 6 Ohms, 8 Ohms, or 16 Ohms ensuring that
even low speaker impedances can be driven without difficulty. The transformer can handle
full power in standard Push Pull design without entering the positive grid-cathode region.
Frequency range extends up to 162 kHz. For strong bass reproduction the power bandwidth
starts at 14 Hz. Special attention has been paid to the differential phase distortion,
being below 2 degrees up to 100 kHz. This is an audio purist transformer for the 300B
triode where more output power is available then in the standard single ended
configuration. |
PAT 4144-00 Application: 6C33B-C
80 W |
PAT4144-00.pdf |
| |
|
| Like the 300B, the Russian made 6C33B-C tube is also popular. In Push Pull
configuration they can handle 80 Watts. Primary impedance is 152 Ohms. The secondary
impedances are 4 Ohms, 6 Ohms, and 8 Ohms. The frequency range extends up to 107 kHz
without any feedback, while the power bandwidth starts at 14 Hz. |
PAT 4148-00 Application: EL34 40
W |
PAT4148-00.pdf |
| |
|
| This Push Pull output transformer is designed specially for speakers with
impedances of 8 Ohms and 16 Ohms. The frequency range extends up to 84 kHz. Power
bandwidth starts at 14 Hz. Primary impedance is 4300 Ohms. Pentode configuration, as well
as Ultra Linear (at 40 % taps) and triode configurations are possible. This design has a
special mild high frequency roll-off (Q = 0.4 is below critical damping) in which negative
feedback will cause no transformer instabilities. |
PAT4143-00 Application: EL84 40 W
|
PAT4143-00.pdf |
| |
|
| This transformer is specially designed for guitar amplifiers with four EL84 power
tubes. This is a 40 W Push Pull parallel configuration with 90 W maximum output power,
providing the large overload headroom essential for guitar amplifiers. The power bandwidth
starts at 29 Hz and extends up to 54 kHz. On the secondary side series parallel speaker
impedances from 2 Ohms, up to 4Ohms and 8 Ohms are possible. The design is optimized for
the nice warm overload sound of EL84 tubes in pentode configuration |
PAT4151-00 Application: EL84 90 W |
PAT4151-00.pdf |
| |
|
| This transformer is a guitar amplifier push-pull output transformer with a low
profile of 4 cm, offering the possibility to use this transformer in single height racks.
The internal leakage and capacitance are very low, resulting in a broad bandwidth up to
108 kHz when driven with four EL84 tubes in pentode configuration.Primary impedance is 4
kOhm. The -3dB power frequency is at 90 Hz, making this transformer ideal for rhythm and
solo guitars. The secondary impedances are at 2, 4 and 8 Ohms. |
PAT4152-00 Application: Solid
State 80 W |
PAT4152-00.pdf |
| |
|
| This transformer is designed for solid state amplification in tube-like Push-Pull
circuitry. The primary impedance is 310 ohms with asecondary output tap at 5 ohms. Because
this transformer will be driven by low imedance transistors or FETs, the frequency range
extends to 282 kHz, while the amplifier will be damped with a Q of 0.4. This large damping
will prevent any overshoot of the 1 kHz square wave responce, thus creating a very stable
sound reproduction, even with difficult impedance speakers, such as electrostatics. This
transformer is achallange for new "old fashioned" solid state amplifier designs
with outptut transformers. Restudy of the first generation solid state-state amplifiers
might show new ways to advanced sound reproduction with solid-state amplifiers with
output transformers. This new wide bandwidth toroidal outptut transformer with be the
start of the next generation of amp designs. |
PAT4147-00 Application: EL34 100
W |
PAT4147-00.pdf |
| |
|
| This transformer fills the gap in our standard series with a primary impedance of
3500 Ohms. The frequency range is up to 150 kHz without any negative feedback. Power
bandwidth starts at 24 Hz. Insertion Loss is extremely low at 0.2 dB while the
differential phase distortion remains less than 1 degree up to 100 kHz. This transformer
is excellent in clean sound reproduction with low harmonic distortion. |
PAT 4140-00 Application: 6550
300 W |
PAT4140-00.pdf |
| |
|
| Imagine six 6550 power tubes together with this transformer delivering 300 W of
output power! With a power bandwidth starting at 14 Hz!. This transformer is intended for
powerful bass guitar amplification. As well as superb low frequency response, the
frequency range extends up to 88 kHz. The bass guitar sound will be clear, strong and
powerful - never "muddy". Secondary impedances of 2 Ohms, 4 Ohms and 8 Ohms
offer a wide variety of different series parallel speaker connections. A separate primary
40% ultra linear screen winding is included for special stabilized screen grid power
supply applications. |
PAT 4141-00 Application: 6550
400 W |
PAT4141-00.pdf |
| |
|
| This design is similar to the PAT 4140(above), but only pentode configuration is
possible, the secondary impedances are 4 Ohms and 8 Ohms, and the power is 400 W. Primary
impedance is 1250 Ohms. Power bandwidth starts at 14 Hz. This will enable eight 6550s,
KT88s or equivalent tubes to be used with an anode voltage of 560 Volts. The frequency
range extends up to 117 kHz without feedback. This full range transformer provides clear
bass guitar sounds like attacks, slaps, etc. |
PAT 4000-00 Tube Application:
EL84 20 W |
PAT4000-00.pdf |
| |
|
| This transformer is intended for Push Pull tube amplifiers with EL84, 6V6, 6BX7,
6BL7, ECL84 and ECL86 tubes. The tubes can be set in Pentode, Ultra Linear or Triode mode.
Primary impedance is 8 kOhms and the secondary impedance is 5 Ohms. The -3dB frequency
range is up to 131 kHz offering excellent application of this transformer in a medium
power push pull amplifier. |
PAT 4146-00 Application: EL34
150 W |
PAT4146-00.pdf |
| |
|
| This high power Push Pull output transformer, with a primary impedance of 2.2
kOhms and a secondary impedance of 8 Ohms with center tap (cathode feedback) and with 43 %
Utra Linear taps, is intended for six EL34 or KT66 or 6L6 tubes at moderately high
voltages (between 350 and 450 Volts). The -3dB (1 W) bandwidth is from 0.6Hz to 118 kHz
while the -3dB power bandwidth starts at 15 Hz, allowing this transformer to be used in
applications where full and strong bass response is essential. |
PAT 4149-00 Application: 211 150
W |
PAT4149-00.pdf |
| |
|
| This transformer is specially designed for two 211 or Svetlana SV572 triodes in
Push Pull configuration, grid driven into the positive cathode-grid voltage region. The
primary impedance is 8 kOhm. The anode voltage should be at 1200 Volt. Power bandwidth
starts at 14 Hz and a -3dB (1W) frequency range up to 41 kHz, all without applying
negative local or overall feedback. Secondary impedances of 4 Ohms, 8 Ohms or 16 Ohms are
included as well as a separate center tapped 64 Ohm feedback winding. |
PAT 4142-00 Application: 6550 80
W |
PAT4142-00.pdf |
| |
|
This Push Pull output transformer has a primary impedance of 4 kOhms with
secondary output taps at 4 Ohms, 8 Ohms and 16 Ohms. This transformer can handle large
anode voltages ( 560 Volts or higher), offering a mild load to the output power tubes:
such as KT66, 6550, KT88 etc. Triode, Ultra Linear (34%) and Pentode configurations are
possible. The power bandwidth starts at a low 14 Hz while extending up to 96 kHz without
any form of negative feedback.
See article:Reprinted
with permission from
Vacuum Tube Valley
Issue 19, 2003, p.p.
26-27
Copyright 2003 by Vacuum Tube
Valley PO Box 1499,
Lakeport, CA 95453, USA. All
rights reserved.
www.vacuumtube.com
The Ultimate PP KT88 Amp
By
John Eckland
An
amplifier without compromise, utilizing PLITRON's PAT4142 output
transformer; PAT4174 Choke; PAT7546 Power transformer and PLITRON's "massive
aluminum chassis". |
PAT4145-00 Application: 6550 70 W
|
PAT4145-00.pdf |
| |
|
| This transformer is especially designed for the popular 6550 tube in Push Pull
configuration with 40 % Ultra Linear Taps. The primary impedance is 3550 Ohms with a
secondary at 5 Ohms. The -3 dB (1W) bandwidth is extremely wide, from 0.5Hz up to 124 kHz
and the -3 dB power bandwidth starts at 14Hz. Phase distortion is low, less than 5 degrees
up to 100 kHz. |
PAT4135 Application: Svetlanta SV572
Triode 150 W |
PAT4135-03.pdf |
| |
|
A special design for the SV572-10/30 graphite high-power triode tube. And
developed in close cooperation with the tube manufacturer, Svetlana. Intended for
push-pull triode amplifier design, this transformer has a bandwidth up to 120 kHz, a
primary impedance of 8 kOhms and secondaries at 2, 4 and 8 Ohms. The
-3dB power bandwidth starts at 20 Hz. The large primary inductance of this special design
(Lp = 750 H) ensures distortion free bass response. See Glass Audio 5/97 pp.20 .; Menno
van der Veen; "Measuring Output Transformer Performance". Svetlana 572/10 and
572/30 tubes are recommended.Toroidal power transformer and toroidal chokes for this
design are also available. Plitron.Toroidal power transformer : 6632-X0-00 (730VA power
rating 2 X 120V at 50 Hz input; multiple secondary outputs) Toroidal chokes: 6619-X0-00 (
20H at 0.4A); 6620-X0-00 (10H at 0.15A)
For more information see Svetlana's website: www.svetlana.com. |
PAT HQ5090 Application: Svetlana
SV572 Triode 90 Watts |
PATHQ5090.pdf |
| |
|
| This Single Ended output transformer is intended for paralleled Svetlana SV572
triode tubes, with a primary impedance of 2.5 or 5 kOhm, depending on secondary loading.
Secondary impedances are 2, 4 and 8 Ohms. The -3dB bandwidth is from 8 Hz to 43 kHz with a
high frequency Q-factor close to 0.5 (critical damping). The insertion loss is an
extremely low 0.15 dB ensuring no loss of audio power and creating excellent damping at
the low frequency end of the power spectrum. The DC current capability is 400 mA maximum.
This transformer is designed for no overall negative feedback applications, completely
relying on the tube characteristics for the purest sound quality. |
