LL1971 is a high performance moving coil step-up transformer. The transformer combines our unique uncut amorphous cobalt core and our dual coil structure with Cardas high purity copper wire in an oversized design. The objective is to provide the best possible MC transformer, cost-no-object. The dual-coil structure greatly improves immunity to external magnetic fields from power supplies, motors etc. The transformer is housed in a mu-metal can.
Turns Ratio: 1+1 : 12+12
Dimensions (L x W x H above PCB, in mm) 43 x 28 x 22
Spacing between pins 5.08 mm (0.2")
Spacing between rows of pins 30.5 mm (1.2")
Rec. PCB hole diameter: 1.5 mm
Weight: 92 g
Static resistance of each primary: 0.6 ohms
Static resistance of each secondary: 90 ohms
Frequency response (serial connection, source 25 ?, 10 Hz -- 100 kHz +/- 1.0 dB
load 47k ohms ): (galvanically isolated sides)
Frequency response (as above): 10 Hz -- 40 kHz +/- 1.0 dB
(galvanically connected sides)
Isolation between windings/ between windings and core: 3 kV / 1.5 kV
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