Lundahl Moving coil input transformer, LL1681

Moving Coil Input Transformer LL1681

The LL1681 is a large core moving coil input transformer with a mu-metal core.

The LL1681 consists of two coils, each with a two-sectioned primary winding and one high level secondary winding (with paper insulation) separated by electrostatic shields. The transformer is magnetically shielded by a mu metal housing.

Turns ratio: 1 + 1 : 13 + 13
Dims (Length x Width x Height above PCB (mm)): 48 x 29 x 20

Spacing between pins: 5.08 mm (0.2")
Spacing between rows of pins: 35.56mm (1.4")
Weight: 90 g
Rec. PCB hole diameter: 1.5 mm