3500 Ohms 20W Single ended Output transformer (300B)

£107.00£123.00

A large design to enable good performance down to low frequencies. Designed for those that require a no-compromise single ended output amplifier. For a single ended 300B or any valve requiring 3500 Ohms anode load.

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Description

A very high quality 20W Single ended output transformer. Designed initially for single ended 300B amplifier but may be used in any single ended design with a valve having an output impedance of 3500 Ohms. A large design to enable good performance down to low frequencies. Designed for those that require a no-compromise single ended output amplifier.

Primary

100mA DC current
Multi section winding, for reduced leakage inductance.

Inductance

Inductance 24H.
Leakage inductance 13mH

Bandwidth

Exceptional bandwidth at full power.
Wide bandwidth, 15-30KHz. (-1dB)

Secondary

Output impedance 4,8 and 16 Ohms.

Steel

Highest quality Grain Orientated M6 0.35mm.
Hand laminated for the best stacking factor, and accuracy.

Winding wire

Double coated Grade 2 enamelled copper wire.
Wound using CNC winders for highly accurate wire placement and turns count.
Layer wound for excellent wind consistency and alignment resulting in reduced leakage inductance.

Connecting wire

High quality PVC 600V
Secondary : 20 AWG UL1015

Mounting

Available in Clamp drop through or Frame versions.

Additional information

Weight N/A
Mounting Type

Stand up, Drop through, Frame, Universal clamp

Dimensions

Here are dimensional diagrams for this choke.
Please refer to the relevant key below for the dimensions.

shroud_with_feet.pdf

drop_through.pdf
frame.pdf

Shroud With Feet Drawing Key

Label Description Dimension (mm)
A Width 95
B Height 115
C Depth 115
D Mounting depth 80
E Mounting width 79
F Hole width 6

Drop through Drawing Key

Label Description Dimension (mm)
A Width 95
B Length 114
C Height 75
D Cutout width 70
E Cutout length 80
F Fixing length 95
G Fixing width 76
H Mounting hole diameter 4.1

Frame Drawing Key

Label Description Dimension (mm)
A Width 98
B Height 117
C Depth 83
D Mounting height 64
E Mounting width 64
F Mounting depth 67
G Overall depth 92
H Mounting hole width 5

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