Application Description
Low-frequency transformers in microwave oven high-voltage circuits step up mains voltage to 2,000-3,000V, powering the magnetron to generate microwaves. Their core function is voltage conversion via electromagnetic induction, while isolating high/low-voltage circuits for safety.
Case Study
A brand microwave uses a 50Hz iron-core transformer: Input 220V/50Hz, output 2,100V AC. After rectification by high-voltage capacitors/diodes, it drives the magnetron. Key specs: Primary current 5.5A, secondary current 0.35A, efficiency ~85%.
