Цитата:А всё-таки интересно как буржуи мотают трансы ,как они экономят на металле для стоваттников.Экономию меди мы увидели.
Размер выходника Меса ДР - EI96x40mm. Сечение железа 12,8см.кв.Не знаю как и почему они съэкономили, но ДР достаточно известный...
Говорите что выходник Маршалла тоже не отвечает требованиям експертов, но кажется это не помешало им стать то что они есть, даже наоборот.
Вот что у меня насчет Dagnall C2668 (TXOP - 00006):
Transformer Specification C2668 Dagnall Electronics
-Customer: Marshall Amplification Plc.
-Product: 100 watt Output Transformer - Steel Shroud Enclosure-Chassis Mounted
-Customer Part No: TXOP - 00006
-Core: Pattern 120N laminations in M6-35 grade material to BS6404 Sect 8.7
-Bobbin: Single Section moulded bobbin in 30% glass fibre reinforced Nylon 66 Core tube thickness 1.65mm
-Windings: In concentric sequential order with Input and Output windings sandwiched
for performance characteristics. Output is split and parallel connected to
improve efficiency and share load. All winding wires have enamel
covering of thermal class B minimum.
-Output 1: 0 - 40v 16 ohms @ 100W (Brown - Green)
Wound with grade 1 polyurethane wire to BS 6811
Insulated by 3 wraps of Nomex 410 paper, 0.08mm thk/layer
-Input: 0 - 207 - 414v 1750 ohms @ 100W (Brown - White - Red)
Wound with grade 1 polyurethane wire to BS 6811
Interleaved every 3 Layers by 1 wrap of Nomex 410 paper, 0.08mm thk.
Insulated by 3 wraps of Nomex 410 paper, 0.08mm thk/layer.
-Output 2: 0 - 20.33v 4 ohms @ 100W (Brown - Black)
Wound with grade 2 polyestermide wire to BS 6811
-Output 3: 0 - 28.67v 8 ohms @ 100W (Brown - Yellow)
Wound with grade 1 polyurethane wire to BS 6811
Insulated by 2 wraps of electrical Crepe Paper Tape, 0.24mm thk/layer.
-Terminations: All windings terminated to VX grade PVC; 105 deg C flexible leads
-Encapsulation: Laminated wound coil varnish dipped in Class F polyurethane
electrical insulating varnish and oven cured.
-Assembly: Two steel end shells totally enclose windings, the connecting leads
passing through PVC grommets.
-Electrical Tests: No Load Magnetisation Current
Turns Ratio +/- 3%
Induced Voltage Test @ x5 Rated Input @ x12 Rated Frequency
Simultaneous Electrical Strength Test -
2.0Kv rms Primary to Secondaries and Core
Examination, Fit & Function, Performance and Safety Checks carried
out at 100% level.
The 1968-69 Dagnall (#1998) was paper insulated and wound on a paper former, the 1974 Dagnall (#2668) was Hostaflon insulated and wound on a nylon bobbin.
Therefore the layer's geometry is different, also the layer-to-layer capacitances.
The #1998 does have self leads (secondary winding leads), the #2668 has flying leads soldered to the secondary wire inside.
The #1998 does have a .56mm dia. parallel 16 ohms secondary, while the #2668 does have a .75mm dia. parallel 16 ohms secondary.
And of course the irons are different too.
he numbers of turn & the lead sizes of the Dagnall C2668 are:
Primary = 2 x 620 turns 0.45mm (enameled dia.)
Secondary 0-4 ohms = 61 turns 1.76mm (enameled dia.)
Secondary 4-8 ohms = 25 turns 1.18mm (enameled dia.)
Secondary 8-16 ohms = 34 turns 1.18mm (enameled dia.)
Parallel Secondary 0-16 ohms = 120 turns 0.75mm (enameled dia.)
The prim-sec capacitance usually is 500...650p
Larry
Выходник Меса Стерео 2:90 Симул класс:
Размер EI96x37. Сечение железа 11,84см.кв.
I recently disassembled a fried simul-class OT from a 2:90.
It was marked: 562004R-1 EIA606-540
The windings were (I may have missed a turn or two since the two primaries don't match):
74 turns in two layers (4ohm)
831 turns in seven layers (Primary part 1)
42 turns in one layer (8ohm) (in series with 4 ohm)
832 turns in seven layers (Primary part 2)
74 turns in two layers (4ohm)
The two 4ohm windings were paralleled.
There were no taps on the primary, except for the center tap.
I got 0.315 and 0.8mm wire for the rewind, but both these seem to be about 0.01mm thicker than what mesa used.
I hope it fits anyway...
Measured over entire primary:
DCR 86ohm
~9H inductance
~16mH leakage inductance when shorting 4ohm tap
17.5kHz upper -3dB frequency response with 4ohm load
108 laminations of each kind measures 95.2x79.7x37.2mm assembled.
Страниц: 
Намотка выходника Marshall Super Lead 1959 (1974г) (Прочитано 716 раз)
