LL2771: Lundahl Choke

The LL2771 is a big dual-coil choke for high-current tube amplifier anode supplies. The choke has different core air gaps, which result in different inductance and DC current capabilities. The coil is wound using our standard high internal isolation technique with paper isolation between each copper layer. The core is an audio C-core of our production. LL2771 is well-suited for choke-input power supplies.

The LL2771 is available in 4 versions.

• 0.7H, 2A, wired in parallel
• 1.5H, 1A, wired in parallel
• 3H, 1A, wired in series
• 6H, 500mA, 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):

  LL2771 0.7H (2A) has a value of 3H (1A) when wired in parallel
  LL2771 1.5H (1A) has a value of 6H (500mA) when wired in parallel

  Silicon-iron (STANDARD) core material

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

Dimensions - 150mm x 105mm x 90mm

PRICE (1 off)
£137.70 +vat +p&p

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