Nortronics Tape Recorder Bias Transformer #840-007 NEW Old Stock

Description

New old stock
Nortronics bias transformer #840-007. T60 case style. This bias transformer has a relatively high output voltage, suitable for medium impedance solid-state recorders and many higher impedance, high voltage heads for typical tube tape recorders. It has a wide frequency response. Useable from 50 kHz to over 200 kHz. It is intended to be driven from a push-pull transistor circuit. Center tapped primary with a tapped secondary.
Measured Specifications:
·
Primary Inductance = 125 microHenries
·
Minimum open circuit voltage ratio = 1:3 – 1:1.5
·
3 Watts
·
0.37 ohms primary DC Resistance
·
8.03 ohms secondary DC resistance and 3.95 ohms at secondary tap
There is a small quantity available.
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