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Tamura Audio Transformers

 

Al momento non trattiamo più trasformatori Tamura

 

At the Moment we don't Have more Tamura Transformers

 

F-5000 Series

Amorphous Output Transformers

Application can be found in various wide range circuits, in combination with output transformers for vacuum tubes where material amorphous (amorphous alloy) is used, 5 poles tubes, 3 poles tubes and many other kinds of vacuum tubes. It creates a new sound world with a profound depth and expanse.

  • Distorsion factor: below 0.01% (measured at a single transformer).
  • SG taps for cathode NFB winding and UL are provided (for pushpull only).
  • Wide band design for better phase characteristics through adoption of new winding system.
  • High class profile by new design aluminium die cast case (the design attaching importance to a tone quality)
Catalogue No. Primary Impedance Secondary Impedance Frequency Range Output Max DC current Primary Inductance Prices/each
  ohm ohm Hz watt mA Henry Euro Lire
F-5001 2k (SE) 4,8,16 10-100k 8 100 15 887.26 1.717.980
F-5002 3k (SE) 4,8,16 10-100k 8 100 18 898.27 1.739.300
F-5003 5k (SE) 4,8,16 10-100k 8 100 20 909.12 1.760.300
F-5004 6k (SE) 8,16 10-80k 8 100 23 919.81 1.780.990
F-5005 3k5 (PP) 4,8,16 10-100k 42 120x2 70 989.81 1.780.990
F-5006 5k (PP) 4,8,16 10-100k 42 120x2 80 941.18 1.822.380

B-6000 Series

Tube Lamp type Interstage Driver Transformers
Interstage driver transformers which match with new design amorphous output transformers F-5000 Series, having various impedance meeting with various vacuum tubes, can also be used at DC superposition.
  • High class profile by new design aluminium die cast case (the design attaching importance to a tone quality)
Catalogue No. Primary Impedance Secondary Impedance Frequency Range Output Max DC current Winding Ratio Prices/Each
  ohm ohm Hz dBm mA   Euro Lire
B-6001 10k 40k pp 30-15k 25 10 1:2 202.24 391.600
B-6002 10k 40k 30-15k 25 10 1:2 196.06 379.620
B-6003 5k 20k pp 30-15k 25 30 1:2 202.24 391.600
B-6004 5k 20k 30-15k 25 10 1:2 196.06 379.620
B-6005 20k pp 20k pp 30-15k 25 20x2 1:1 223.96 433.660
B-6006 10k pp 40k pp 30-15k 25 20x2 1:2 223.96 433.660
B-6007 10k pp 10k pp 30-15k 25 40x2 1:1 223.96 433.660
B-6008 5k pp 20k pp 30-15k 25 40x2 1:2 223.96 433.660

A-4005 & A-4006 Series

Inductors
Interstage driver transformers which match with new design amorphous output transformers F-5000 Series, having various impedance meeting with various vacuum tubes, can also be used at DC superposition.
  • High class profile by new design aluminium die cast case (the design attaching importance to a tone quality)
Catalogue No. Inductance (Series connection) Inductance (Parallel Connection) DC Current (Series Connection) DC Current (Parallel Connection) DC Resistance (Series Connection) DC Resistance (Parallel Connection) Prices/Each
  Henry Henry mA mA ohm ohm Euros Lire
A-4005 5 1.25 250 500 80 20 166.93 323.220
A-4006 10 2.5 200 400 140 35 172.43 333.880

F-7000 Series

Permalloy Cores
This has been developed and manufactured with an aim to improve a tone quality from low zone to high zone, using the paermalloy core (Nickel content approx. 38%, special order by Tamura), including output transformer which uses permalloy core for 3 pole tube single exclusive use , and output transformer for pushpull. The products have been completed to contribute to improve customerss' sound life, carefully selecting a tone quality which is indispensable for output transformers. having sufficient output capability and volume of information, the customer will hopefully enjoy an excellent wide zone sound through various feelings such as voluminous low and high zone, also expansion of sound and profund vivid presentation. Entire satisfaction will be covered without feeling of an existence of the digital source.
  • For further detailed techical information on the permalloy, please refer to 1997 February issue of MJ magazine (in japanese).
  • Technical report for the electrical characteristics is available from us.
Catalogue No. Primary Impedance Secondary Impedance Frequency Range Output Max DC current Primary Inductance Prices/Each
  ohm ohm Hz watt mA Henry Euros Lire
F-7001 2k (SE) 4,8,16 15-60k 8 100 20 420.96 815.100
F-7002 3k5 (SE) 4,8,16 15-50k 10 100 25 485.73 940.500
F-7003 5k (SE) 4,8,16 15-50k 10 100 30 501.92 971.850
F-7004 7k (SE) 4,8,16 15-30k 5 50 25 510.01 987.530
F-7020 3k5 (PP) 4,8,16 20-80k 70 150x2 100 501.92 971.850
F-7021 5k (PP) 4,8,16 20-80k 70 150x2 200 526.21 1.018.880

F Series
Wide band output transformers with third winding for NFB exclusive use, which can make stabilized NFB circuit, eliminating unstable oscillation through the changes of secondary load. Impedance for NFB winding is 16 ohm. SG taps are provided for all models except F-781, F-782, F-783, so that UL circuits can be constructed.
Catalogue No. Primary Impedance Secondary Impedance Frequency Range Output Max DC current Primary Inductance

Prices/Each
  ohm ohm Hz watt mA Henry Euros Lire
F-475 5k (SE) 4,8,16 30-50k 7.5 45   161.61 312.930
F-483 5k (PP) 4,8,16 30-50k 15 110   161.61 312.930
F-485 8k (PP) 4,8,16 30-50k 15 110   161.61 312.930
F-486 10k (PP) 4,8,16 30-50k 15 100   161.61 312.930
F-682 3k5 (PP) 4,8,16 30-50k 30 200x2   204.89 396.720
F-683 5k (PP) 4,8,16 30-50k 30 150x2   204.89 396.720
F-684 6k6 (PP) 4,8,16 30-50k 30 150x2   204.89 396.720
F-685 8k (PP) 4,8,16 30-50k 30 150x2   204.89 396.720
F-781 2k5 (PP) 4,8,16,32 30-50k 50 250x2   227.95 441.180
F-782 3k8 (PP) 4,8,16,32 30-50k 50 250x2   227.95 441.180
F-783 5k (PP) 4,8,16,32 30-50k 50 250x2   227.95 441.180

F-2000 Series
Output transformers for 2 poles tubes exclusive use, marking a constant loss of 0.25 value for first time for the output transformers. This fact was due to attempt to have good selection of iron core, sufficient margin for output capability and a success to reduce the primary winding resistance to below 1/5 of the traditional level. Further, satisfactory results were obtained for the frequency, phase characteristics which were factors of inverse proportion.
Catalogue No. Primary Impedance Secondary Impedance Frequency Range Output Max DC current Primary Inductance Prices/Each
  ohm ohm Hz watt mA Henry Euros Lire
F-2003 3k5 (SE) 8,16 30-100k 8 100 13 273.63 529.820
F-2004 5k (SE) 8,16 30-80k 8 100 16 273.63 529.820
F-2005 7k (SE) 8,16 30-70k 8 100 21 385.34 746.130
F-2006 2k (SE) 4,8,16 10-60k 8 100 17 299.53 579.980
F-2007 3k (SE) 4,8,16 10-60k 10 100 25 299.53 579.980

F-2020 Series
Output transformers for pushpull exclusive use for output 50 watts. In combination with various kind of vacuum tubes including 5 poles tubes and 3 poles tubes, these can be used in many different circuits.
  • SG taps are provided for cathode NFB winding and for UL.
  • Wide band design for better phase characteristics are arranged through adoption of a special winding system.
  • 0.25dB is marked for the lowest constant loss as the output transformer.
Catalogue No. Primary Impedance Secondary Impedance Frequency Range Output Max DC current Primary Inductance Prices/Each
  ohm ohm Hz watt mA Henry Euros Lire
F-2020 3k5 (PP) with UL taps 4,8,16 cathode NFB winding 10-100k 50 150x2 90 (@ 0mA DC) 320.58 620.730
F-2021 5k (PP) with UL taps 4,8,16 cathode NFB winding 10-80k 50 150x2 150 (@ 0mA DC) 320.58 620.730

F-2010 Series

Output 100W push-pull exclusive use output transformer wich can be used in combination with 5 poles tubes, 3 poles tubes and many other kinds of vacuum tube in various circuits (F-2010, F-2012).
  • SG taps are provided for cathode NFB winding and for UL.
  • Wide band design for better phase characteristics are arranged through adoption of a special winding system.
  • 0.25dB is marked for the lowest constant loss as the output transformer.
Catalogue No. Primary Impedance Secondary Impedance Frequency Range Output Max DC current Primary Inductance Prices/Each
  ohm ohm Hz watt mA Henry Euros Lire
F-2011 3k5 (PP) with UL taps 4,8,16 cathode NFB winding 5-100k 100 200x2 110 (@ 0mA DC) 535.11 1.036.120
F-2012 5k (PP) with UL taps 4,8,16 cathode NFB winding 5-80k 100 180x2 210 (@ 0mA DC) 471.16 912.290
F-2013 10k (SE) 4,8,16 20-500k 40 100x2 50 513.25 993.800

A-300 Series

Inductors
Inductance variation is becoming smaller against current variation. Inductance variation can scarcely be seen against variation within 20%.
Catalogue No. Inductance DC current DC Resistance Prices/Each
  Henry mA ohm Euros Lire
A-393 100 10 2000 86.90 168.270
A-394 30 40 740 86.90 168.270
A-395 10 120 110 80.54 155.960
A-396 5 200 70 80.54 155.960

A-4000 Series

Inductors
Two winding system power inductor, wich can be separately used in 2 ways for inductance value and current capability. Inductance value is stabilized for current variation and can be used in stable form for overcurrent within 20% level.
Catalogue No. Inductance (Series connection) Inductance (Parallel Connection) DC Current (Series Connection) DC Current (Parallel Connection) DC Resistance (Series Connection) DC Resistance (Parallel Connection) Prices/Each
  Henry Henry mA mA ohm ohm Euros Lire
A-4003 5 1.25 250 500 65 16 113.34 219.450
A-4004 10 2.5 200 400 120 30 109.13 211.300

 

 

1x US $ = ± 2.050 Italian Lire      1x GB £ = ± 3.150 Italian Lire     1x EURO = 1936,27 Italian Lire

Prezzi IVA Inclusa  -  Prices included VAT

(Per i paesi fuori dalla comunità Europea detrarre  circa il 17%)

(For Countries Outside of  European Community deduct about 17%)

 

 

I trasformatori Tamura sono su Prenotazione !

Tamura Transformers are on Reservation !

 

I tempi di consegna presso il ns punto vendita, sono di circa 7-60 gg 

Approximate delivery Time at our shop, are 7- 60 days

 

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mercoledì 02 luglio 2014

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