is a step up transformer for MC cartridges. It is suitable for MC cartridge of
an impedance 10 ohm and a 40 ohm.
PLT-1 has a good frequency characteristic and high external noise exclusion capability by 78% Nickel permalloy L type core and balance structure winding.
The photograph left is the appearance of PLT-1. The photograph right is the transformer dedicated in the case.
|Type||MOVING COIL CARTRIDGE STEP UP TRANSFORMER|
|Ratio||Primary : 1+1
Secondary : 24
|Impedance||Primary : 10 ohm + 10 ohm
Secondary : 5760 ohm
parallel (10ohm) 18Hz to 105KHz -1dB
Primary series (40ohm) 20Hz to 100KHz -1dB
parallel (10ohm) 72mH
Primary series (40ohm) 290mH
|Secondary inductance||50H （120Hz, 50mV）|
|Primary DC resistance||Primary
Primary series 1.6ohm
|Secondary DC resistance||250ohm|
|Maximum Primary voltage||100mV|
|Primary DC current||Improper, the transformer only for AC signal|
|Maximum voltage between primary and secondary||100VAC|
|Core||78% Nickel permalloy L type|
|Dimensions and weight||W:32mm, D:32mm, H:30mm 78g|
|Price||US$72, or 65Euro (excluding tax & shipping)|
Primary impedance and a ratio can be chosen by the wire connection of 2 sets of primary winding.
|Primary inductance||Ratio||The example of a Phono cartridge|
|Primary parallel||10ohm||1：24||ortofon MC-10,MC-20,MC-30,SPU, etc.|
|Primary series||40ohm||1：12||DENON DL-103, Audiotechnica AT-33, etc.|
parallel, Inductance 10ohm, Ratio 1:24, input 0.1mV
Primary series, Inductance 40ohm, Ratio 1:12, input 0.1mV