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Currently, the market price of copper remains high, fluctuating in the range of 70,000 to 80,000 yuan per ton. In contrast, the price of aluminum stays low, lingering in the range of 18,000 to 20,000 yuan per ton. For power transformers, replacing copper windings with aluminum windings in design will undoubtedly significantly reduce the material cost of products, bringing substantial cost savings to end customers.For a long time, it has been widely believed in the industry that aluminum windings

For users, when purchasing a 35kV new energy transformer, choosing between dry-type, mineral oil-filled, or vegetable oil-filled types involves multiple considerations. These include user habits, maintenance-free performance, safety and fire resistance, volume and weight, among others. However, cost differences are undoubtedly one of the most crucial factors.To illustrate the issue intuitively, this paper selects a three-level energy efficiency dual-winding new energy transformer with a rated ca

1 Hardware Design of Tester Power SupplyThis device uses a standard small - signal generating device to generate small - current signals with the required frequency and phase angle. Then, through the amplifying circuit and phase - modulating circuit, the working power supply is generated.1.1 Power Frequency Sine Wave Small - Current Signal Generating DeviceThe sine wave generating circuit is mainly composed of the waveform generating chip MAX038 produced by MAXIM Corporation of the United States