The circuit adopts the negative feedback form to realize the tone control, that is, the RC network is connected in the negative feedback loop. Two circuits are used in the circuit, the model is DS166, and the potentiometer with the resistance value is l00kΩ, respectively, to complete the high and low frequency adjustment. It consists of a universal integrated operational amplifier LM301AN, which constitutes a tone control circuit.
For the 132kV Oil Immersed Power Transformer, we can produce capacity upto 180MVA. We use the best quality of raw material and advance design software to provide low noise, low losses, low partial discharge and high short-circuit impedance for power transformer.
Our power transformer are widely used in national grid, city grid, rural grid, power plant, industrial and mining enterprise, and petrochemical industry.
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Hangzhou Qiantang River Electric Group Co., Ltd.(QRE) , https://www.qretransformer.com