The intermediate frequency transformer is a special transformer with a fixed resonance circuit in the super-heterodyne receiver, but the resonance circuit can be fine-tuned within a certain range, so that the accurate resonance frequency can still be achieved after the circuit is connected. Or the change of the relative position of the magnetic core is completed. The primary and secondary of the intermediate frequency transformer for electron tubes are usually tuned loops, and the transistors use two types: double-tuned and single-tuned.

The function of the intermediate frequency transformer is to convert the power supply voltage of an intermediate frequency generator (such as a thyristor intermediate frequency power supply, an intermediate frequency generator or a tube oscillator, etc.) into the voltage required by the quenching induction coil or other devices.

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