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Lundahl LL1691B-Ag Silver Wire Dual Coil C-Core tube Output Transformer

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  • Must be ordered. Ready for shipment in 28 days
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  • LL1691B-Ag

Description

The LL1691B is a dual coil C-core tube amplifier output transformer for 20k: 8 ohms impedance ratio, Based on the LL1691 design. The LL1691B is available in PP and SE versions. The coil is wound using our high internal isolation technique with isolation foil between each individual layer of copper wire. The core is an audio C-core of our own production. 

Turns ratio        25 + 25  : 1

Weight:          4.6 kg

Static resistance of each primary:     260 ohms  

Static resistance of secondary:      0.3 ohms 

Isolation between windings / between windings and core:   4 kV / 2 kV

Max DC current through any primary winding (10W heat dissip):  140mA

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