![]() We’re going to concentrate on the transformer only and will ignore the output inductor and output capacitor used for filtering and ripple reduction… We’re going to design a fairly simple push-pull transformer. A lighter ferrite core is the choice at these The applied input voltage is only applied for very short periods of time due to the high frequency and as such the transformer size can be reduced as the turns and core area required to avoid saturation are much smaller. Older, linear power supplies often used low frequency, heavy silicon steel type transformers to step down incoming line voltage to something smaller that was then rectified and filtered.Ī high-frequency switching transformer can take a rectified and filtered AC line voltage and quickly “switch” it down to a lower DC voltage. These power supplies are known as switched-mode-power-supplies (SMPS). One flavor of a high-frequency switching transformer is known as a push-pull transformer.Ī push–pull transformer is a DC-to-DC switching transformer it is often used to change a power supply’s DC voltage.
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