Lundahl Amorphous core choke, LL1638-8H-AM View larger

Lundahl Amorphous core choke, LL1638-8H-AM

LL1638-8H-AM

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Lundahl Amorphous core choke, LL1638-8H-AM

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323,46 €

265,13 € tax excl.***

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Amorphous core choke LL1638

The LL1638 is a 2 coils choke for tube amplifier anode supply. The choke is available with different core air-gap, which results in different inductance and DC current capability. The coil is wound using our standard high internal isolation technique with isolation foil between each copper layer. The core is an audio amorphous core of our own production.

The obvious measurable difference between our silicon-iron cores and amorphous cores is that the saturation flux for the amorphous core is approximately 33% less than for the silicon-iron counterpart. This is caused partly by a lower saturating flux level, partly by a smaller fill-factor due to the thickness of the amorphous sheets.

Weight: 1.35 kg
Static resistance of each winding: 18 ?
Isolation between windings / between windings and core: 4 kV / 2 kV

Coils in series

Coils in parallel

Type

Inductance

Recommended DC current

Saturating current

Inductance

Recommended DC current

Saturating current

LL1638-4H-AM

4 H

400 mA

575 mA

1 H

800 mA

1150 mA

LL1638-8H-AM

8 H

200 mA

290 mA

2 H

400 mA

580 mA

LL1638-10H-AM

10 H

150 mA

215 mA

2.5 H

300 mA

430 mA

Max. ripple voltage at rec. DC current

300V rms / 100 Hz

150V rms / 100 Hz

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Lundahl Amorphous core choke, LL1638-8H-AM

Lundahl Amorphous core choke, LL1638-8H-AM

Lundahl Amorphous core choke, LL1638-8H-AM