Amplifier headphone output transformer 8 ohms to 50 ohms 300 ohms output transformer headphone output transformer.

 

The output transformer layer is padded and layered in layers. Imported amorphous 4C core winding, 10W output transformer, suitable for 10W-200W transistor amplifier, 4 ohm-32 ohm amplifier can be used.

 

The input impedance is 8 ohms and 2 lines, and the output is 50 ohm or 300 ohm headphones. Can also be ordered as required.

 

Imported second-hand amorphous 4C iron core, high quality oxygen-free copper copper enameled wire wound, Red Bull bracket. The British nickel-based amorphous C-type core is very thin and extremely brittle, and its magnetic permeability is much higher than that of the iron core, which is lower than that of permalloy. The famous American Maijingtu C275 amplifier is a C-type iron core transformer.

The wire package does not use the nylon skeleton of organic material, and the original cardboard does not have a frame. It is like the output transformer process of Shanghai Radio 27 Factory, layered paper, layered and layered, layered by layer, and it is guaranteed by superb hand winding process. The enameled wire does not collapse, and the primary and secondary wires are wound together to minimize leakage inductance and distributed capacitance. There are many series-parallel joints, which can't be mistaken, and it takes time and labor. The insulating paint is saturated into the entire wire package, protecting the wire package and the transformer core, weighing 3Kg/pair.

 

Other impedances can also be ordered as required.

 

8 ohms 50 ohm output transformer parameters:

 

The primary inductance is about 1.55H (1V100HZ measurement), and the DC copper resistance is about 7.8 ohms.

 

The secondary inductance is about 12H (1V100HZ) and the copper resistance is about 23 ohms.

 

The leakage inductance is about 0.26MH, and the distributed capacitance is about 4.3-4.8nF.

 

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8 ohms 300 ohm output transformer parameters:

 

The primary inductance is about 2.23H (1V100HZ measurement), and the DC copper resistance is about 10.2 ohms.

 

The secondary inductance is about 8.3H (1V100HZ) and the copper resistance is about 20.3 ohms.

 

The leakage inductance is about 0.36MH and the distributed capacitance is about 6.2nF.

 

The output transformer core is inserted, like a push-pull output transformer, and the AC is not magnetically saturated.

 

 

The C-type amorphous iron core is a high-grade electron tube end output transformer core, and the iron core is very brittle and cannot be beaten with force. The core is also very thin, similar to the natural insulating mica ore can be peeled off layer by layer.

 

The use of imported second-hand amorphous alloy sheet winding output transformer is a good cheat and foundation. The output transformer of the winding is high-frequency and elegant, the intermediate frequency is sweet, the low frequency is stable, and the charm is better than many high-priced silicon steel sheets. The sound is soft and resistant, and the high and low frequencies extend wider, giving full play to the unique musical characteristics of the tube.