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Some additional specs on the TL-404 autoformer

The nominal winding resistance of the "primary" is 88 ohms. It's nominal reflected AC impedance is 5000 ohms.

The nominal secondary (load) impedances are 4, 10, 50, 200, 500 ohms.

These load impedances may be varied plus or minus 25%.

Frequency response +/- 1dB from 20 hz to 100 khz as shown in graph below.

The MOL at 25 Hz is 100vrms across full "primary"

The MOL at 30 Hz is 125vrms across full "primary"






Builder of MagneQuest & Peerless transformers since 1989



Edits: 02/04/17 02/04/17 02/04/17

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