Tube Amplifier Output Transformers 电子管功放输出变压器

Type型号

Impedance Ratio 阻抗

LL1627

650 ohms, 1.2k or 2.3k primary impedance. 4, 8, or 16 ohms secondary impedance

LL1682

5.5k primary. 33% UL tap. 5 ohm secondary impedance

LL1688

5.5k, 9.2k, 20.5k primary. 33% UL tap. 4, 8, or 16 ohms secondary impedance

LL1691

9k primary. 8 ohms secondary impedance

LL1691B

12k primary. 8 ohms secondary impedance

Tube Amplifier Interstage Transformers 电子管功放级间变压器

Type 型号

Turns Ratio圈数比

Usage/Comment 使用参考

LL1660

1+1+1+1 : 2.25+2.25

Various connection alternatives

LL1660S

1+1+1+1 : 2.25+2.25

Various connection alternatives; Faraday shields

LL1677

1+1+1+1 : 4+4

High current interstage transformer; for 300B driving tube

LL1692A 

1+1+1+1 : 2+2 

parameters between LL1660 and LL1671

Tube Amplifier Input Transformers 电子管功放输入变压器

Type 型号

Turns Ratio圈数比

Usage/Comment  使用参考

LL1544A

1+1+1+1 : 2+2

Line input. Amorphous core

LL1674

1+1 : 4+4

High level input. Amorphous core

LL1676

1+1 : 2+2

High level input. Amorphous core

LL1690

1+1 : 1+1 

High level input. Amorphous core 

LL7901

1+1+1+1 : 1+1+1+1

Very high level line input

LL7902

1+1+1+1 : 1+1, +1+1

High level line input

Preamplifier Output Transformers 前级输出变压器

Type 型号

Turns Ratio圈数比

Usage/Comment 使用参考

LL1930 

5+5 : 1+1

Parallel feed output, unshielded

LL1630

7.2+7.2 : 1+1

High ratio output, SE or PP

LL1660

1+1+1+1 : 2.25+2.25

Various connection alternatives, SE or PP

LL1674

4+4 : 1+1 

Parallel feed output. Amorphous core.

LL1676

2+2 : 1+1 

Parallel feed output. Amorphous core.

LL1689

9+9 : 1+1+1+1 

Various connection alternatives, SE or PP

LL1680

9+9 : 1+1+1+1

Replacement for UTC LS-27 transformer

Line Level Input Transformers 线路板输入变压器

Type 型号

Turns Ratio圈数比

Usage/Comment  使用参考

LL1540

1+1 : 1+1

High impedance line input 

LL1544A

1+1+1+1 : 2+2

Line input. Amorphous core

LL1592

1+1: 1+1

improved, larger version of LL1540

LL1674

1+1 : 4+4

High level input. Amorphous core

LL1676

1+1 : 2+2

High level input. Amorphous core

LL1690

1+1 : 1+1 

High level input. Amorphous core 

LL7901

1+1+1+1 : 1+1+1+1

Very high level line input

LL7902

1+1+1+1 : 1+1+1+1

High level line input 

Line Level Output Transformers 线路板用输出变压器

Type 型号

Turns Ratio圈数比

Usage/Comment  使用参考

LL1517

1+1 : 1+1

Low impedance balanced or unbalanced drive solid state drive

LL1524 

1+1 : 1+1

Low impedance balanced or unbalanced drive solid state drive

LL1539

2: 1+1

Low impedance balanced or unbalanced drive solid state drive

LL1585

1+1 : 1+1

High level, low impedance balanced or unbalanced drive solid state drive

LL1588

1+1 : 1+1

Low impedance unbalanced solid state drive.

LL2811

1+1 : 1+1

Low impedance balanced or unbalanced drive solid state drive, Euroboard size

LL1684

1+1 : 1+1

Amorphous core, low impedance unbalanced solid state drive.

LL5402

2 : 1+1

Low impedance unbalanced solid state drive.

MC Phono Input Transformers    MC 输入变压器

Type 型号

Turns Ratio圈数比

Usage/Comment  使用参考

LL1678

1+1+1+1 : 16+16

Moving coil input. Amorphous core 

LL1681

1+1 : 13+13

Moving coil input. Mu metal core 

LL1931

1+1 : 8+8

Moving coil input. Amorphous core with Cardas high purity copper wire coils. 

LL1933

1+1 : 8+8

Moving coil input. Mu-metal core with Cardas high purity copper wire coils. 

LL9206

1+1+1+1 : 10+10

Moving coil input. Amorphous core 

LL9226

1+1+1+1 : 10+10

Moving coil input. Amorphous core. Lower impedance than LL9206. 

Audio Chokes 扼流圈

Type型号

Inductance电感

Usage/Comment  使用参考

LL1667

Various, 270H+

Tube anode choke. Various DC currents 

LL1668

Various, 40H+

Tube anode choke. Various DC currents