LL1621: Lundahl Interstage Transformer

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LL1621 is a noninverting high inductance drive transformer for tube amplifier output stages. The transformer has a unique audio C-core of Lundahl's production, and the coil is made using a low-capacitance coil winding technique. LL1621 is available in Push-pull and Single-end versions.

The LL1621 is available in 3 options to suit the circuit topology. (The air-gap is adjusted during manufacture to suit)

  • Push-Pull
  • 6mA Single-ended
  • 20mA Single-ended

(N.B. The purpose of the airgap is to accept the DC current of the output valve without saturating the core, leaving enough headroom for the sound signal)

Turns ratio

  • 1 + 1 : 1 + 1

Overall size including pins - 70mm x 61mm x 39mm

STARTING PRICE (1 off)
£83.70 +vat +p&p

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

For more information, please refer to the datasheet below. 

PDF datasheet
LL1621 datasheet208.59 KB
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