Audio Database

 

  • 15067
 
Commentary

Auto transformer with large core volume.

15067 has a wide range and can usually be used with 70 or 140 v lines.
Almost all impedance matching can be performed by changing the connection, and the frequency range is 30 Hz to 15 kHz.

Insertion loss is also minimized.

Model Rating
Type Autotransformer
Frequency characteristic 30 Hz to 15 kHz
Insertion loss 0.3 dB (70 V Line)
Operating current 2.2A (per coil)
Maximum allowable operating current 4.4A (overall, maximum output = maximum voltage x maximum input current)
15067 Allowable Values and Connection Method of Auto Transformer
Operating line and maximum output Input terminal Load terminal Impedance ratio Voltage ratio Maximum output current
30Hzminimum 60Hz minimum
step down 70V at 150W 140V at 300W 1&4 1&2 or 2&4 1:0.25(1/4) 1:0.5(1/2) 4.4amp
70V at 150W 140V at 300W 1&4 1&3 1:0.5(1/2) 1:0.7(7/10) 3.1amp
70V at 50W 140V at 300W 1&4 3&4 1:0.062(1/16) 1:0.25(1/4) 2.9amp
step up 50V at 150W 100V at 300W 1&3 1&4 1:2 1:1.4(1-2/5) 2.2amp
35V at 150W 70V at 300W 1&2 or 2&4 1&4 1:4 1:2 2.2amp
17.5V at 50W 35V at 100W 3&4 1&4 1:16 1:4 0.75amp

Parallel connection
70 v, 300W line
4, 8 Ω
Serial connection
140 v, 300W line
16, 32 Ω
Split connection
70 v, 80W line
8, 16, 32 Ω