306W power transformer for 2A3/300B tube amplifier, dual high voltage multi-winding EI120X67 iron core
Oxygen-free copper enameled wire, EI 120 iron core, 67mm stack thickness, fixed by a vertical Red Bull iron frame, exquisite craftsmanship, high-quality oxygen-free copper enameled wire winding, nylon skeleton, varnishing process, to protect the transformer core and wire package. The transformer has the function of marking the lead, which is suitable for the use of the power source.
The high-quality EI Z11 high permeability four-hole iron core is wound, and the effect of winding the power transformer with the iron core material of the amplifier output transformer is also greatly different. It has high efficiency, low iron loss, low temperature rise, low magnetic leakage, and the disadvantage is high cost.
The design of the power transformer is strictly calculated, and it works normally with the load, and there is almost no noise, so the interference to the line system is the lowest and almost inaudible. The transformer winding is wound with high-quality oxygen-free copper enameled wire, which makes full use of the space of the wire package and does not cut corners. The transformer has a shielded wiring design at the primary and secondary stages, and the soldering lug extraction process, coupled with the Red Bull bracket fixation, has a graceful appearance. 1000V high voltage test for 1 minute.
Transformer core size: 120X100X67mm. Dimensions: 120X100X115mm.
Input 0～220V～228V, shield ground.
High voltage output: 430V-390V-0-390V-430V 0.3A
Low voltage output: 2.5V 4A, 2.5V4A, 11V0.2A, 6.3V4A
Weighs about 6.36KG/piece
There is also a power transformer wound with the same specification Z9 material core. The large material core is removed from the imported large transformer, and then cut and punched into various small specifications. The annealing process is better than the new material.
The thickness of Z9 silicon steel sheet is 0.24mm, and the magnetic induction intensity of Z9 is higher than that of Z11 and the inductance is larger than that of Z11. The thickness of the Z11 silicon steel sheet of 0.35mm is very good. In the same wire package, the inductance of the Z9 chip is more than 30-40% larger than that of the Z11 chip. The thinner the silicon steel sheet iron chip, the smaller the eddy current generated, and the higher the efficiency.
Under the same 220V voltage, the thin film can reduce the no-load current, improve the use efficiency, reduce the temperature rise, and weaken the external leakage magnetic field interference.
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The transformer can be soldered or leaded, and can be used with a horizontal bullshield or an L-foot iron. You can contact before taking the picture.
It can also be customized.
Affirmation: The measured voltage value of the transformer will be different due to the different test conditions and the mains voltage, and the voltage marked on the transformer will be different. There are differences, and the actual voltage measurement has errors. The voltage parameters described in the advertisement are for reference only!
