LL2733: Lundahl Choke

The LL2733 is a 2-coil choke for tube/valve filament current filtering. The coil is wound using our standard high internal isolation technique with isolation foil between each copper layer. The core is an audio C-core of our own production

The LL2733 is available in 2 versions. Suitable for a valve filament or heater power supply

• 0.1H, 3.4A, wired in parallel
• 0.4H, 1.7A, wired in series

• Please refer to the datasheet on how to wire the chokes, be it in series or parallel. Please note that Lundahl only labels the chokes with the series value. To clarify a choke labelled (in bold):

  LL2733 0.4H (1.7A) has a value of 0.1H (3.4A) when wired in parallel

(N.B. Adjusting the airgap adjusts the DC current and inductance. This is done at the Lundahl factory.)

There are further 2 versions depending on what C-core material you require.

• Silicon-iron
• Amorphous-iron (AM)

Dimensions - 95mm x 75mm x 53mm

PRICE (1 off)
£88.46 +vat +p&p

Non-Stock Item - Please allow 4-6 weeks for dispatch