Can step down transformer be used as step up?

Can step down transformer be used as step up?

Yes you can do it but need to exercise some precaution: The LV winding that was intended by design to be the secondary winding, will serves as the primary & the value of the magnetizing inrush current actually will be greater than expected.

Can a transformer be used to step up DC?

When a d.c voltage source is applied across the primary of the transformer,the current in the primary coil remains constant. Hence there is no change in the magnetic flux linked with the secondary. Thus a transformer can’t step up dc voltage.

Can a SMPS transformer be used as a power supply?

For example if your driver IC is operating on 12V then the SMPS transformer will have an auxiliary output winding that can be used to power this IC. Transformers don’t have an electrical connection between different windings.

How are secondary windings used in a SMPS transformer?

Therefore an SMPS transformer can also have multiple secondary windings. There are different types of SMPS design where the driver circuit needs an additional voltage source to power the driver IC. The auxiliary winding is used to provide this additional voltage to the driver circuit.

Why do you need a flyback transformer for SMPS?

Those who have already worked with SMPS circuits would easily agree that the flyback transformer design plays a vital role in designing an efficient power supply circuit. Most times these transformers are not available off the shelf in the exact same parameter that suits our design.

Which is the best vacuum impregnation for SMPS transformers?

Vacuum impregnation with epoxies and/or varnishes can ensure this high level of performance and endurance. Bhuvana Madhaiyan is a Design and Development Engineer with Talema India. She holds a bachelor’s degree in Electrical and Electronics Engineering from Anna University Chennai and has been a practicing engineer since 2006.