Lundahl Anode choke, LL2743-90mA

Tube anode choke LL2743-90mA

The LL2743 is an anode choke for tube amplifiers. The choke is built with two coils and are using our own grainoriented silicon-iron audio C-core. The coils are made using a low capacitance coil winding technique. The two coil structure greatly reduces the risk of picking up hum caused by external magnetic fields from e.g. mains transformers. The LL2743 is available with different core airgaps for different DC currents on request.

Weight: 1.35 kg
Static resistance of each winding: 200?
Max DC current per winding, all applications (5W heat dissipation required): 110 mA
Isolation between windings and core: 4 kV

Approx. inductance (windings in series): 50H
Standing DC current: 90 mA
Saturating DC current: 140 mA
Max signal voltage @ 30 Hz: 450V RMS (90mA)