Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
I want to wind a 12-0-12V, 20A transformer for an inverter. My question is how to calculate the power of the transformer. Is it 12*20 = 240W or 24*20 = 480W (Because 12-0-12 if 24 volts full wave). Please help me
In the push-pull transistors that drive the transformer, only one transistor conducts 12V/20A at a time. So the output power is 12V x 20A= 240W if the transistors are low on-resistance Mosfets and the transformer has no resistance. Your inverter will have a square-wave output voltage that is the proper voltage when it has no load. But its output voltage will be too low when it has a load due to the resistance of the transistors and the transformer.
Many electronic products do not work from a square-wave because they depend on the higher peak voltage of a sine-wave.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.