PLT-1
MOVING COIL CARTRIDGE STEP UP TRANSFORMER

PLT-1 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.

Feature

It corresponds to two types of MC cartridges, 10ohm and 40ohm.
A 78% Nickel permalloy L type core suitable for a small signal.
High external noise exclusion capability by balance structure winding.
A wideband and a smooth frequency response characteristic.
Low direct-current resistance winding, and low loss.
Magnetic prevention case.
Low price US$72, or 65Euro (excluding tax & shipping).

Product specification

Type	MOVING COIL CARTRIDGE STEP UP TRANSFORMER
Ratio	Primary : 1+1 Secondary :　24
Impedance	Primary　 : 10 ohm + 10 ohm Secondary : 5760 ohm
Frequency bandwidth	Primary parallel (10ohm) 18Hz to 105KHz -1dB Primary series (40ohm) 20Hz to 100KHz -1dB
Primary inductance	Primary parallel (10ohm) 72mH Primary series (40ohm) 290mH
Secondary inductance	50H　（120Hz, 50mV）
Primary DC resistance	Primary parallel 0.4ohm 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
Connections	Lead wires
Dimensions and weight	W:32mm, D:32mm, H:30mm 78g
Price	US$72, or 65Euro (excluding tax & shipping)

Primary inductance and Ratio

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.

Mounting and overall dimensions

Characteristic

Primary parallel, Inductance 10ohm, Ratio 1:24, input 0.1mV

Primary series, Inductance 40ohm, Ratio 1:12, input 0.1mV

Ordering