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Electronics Reference

Transformer

latex!encoded:base64,XHRleHRybXtUdXJuc31cO1x0ZXh0cm17cmF0aW99PVx0ZXh0cm17bn09XGZyYWN7XHRleHRybXtOfV9cdGV4dHJte1B9fXtcdGV4dHJte059X1x0ZXh0cm17U319NP - Number of turns in the primary
NS - Number of turns in the secondary
latex!encoded:base64,XGZyYWN7XHRleHRybXtWfV9cdGV4dHJte1B9fXtcdGV4dHJte1Z9X1x0ZXh0cm17U319PVxmcmFje1x0ZXh0cm17Tn1fXHRleHRybXtQfX17XHRleHRybXtOfV9cdGV4dHJte1N9fQ==VP - Primary voltage
VS - Secondary voltage
NP - Number of turns in the primary
NS - Number of turns in the secondary
latex!encoded:base64,XGZyYWN7XHRleHRybXtJfV9cdGV4dHJte1N9fXtcdGV4dHJte0l9X1x0ZXh0cm17UH19PVxmcmFje1x0ZXh0cm17Vn1fXHRleHRybXtQfX17XHRleHRybXtWfV9cdGV4dHJte1N9fQ==IS - Secondary current
IP - Primary current
VP - Primary voltage
VS - Secondary voltage
latex!encoded:base64,XGZyYWN7XHRleHRybXtafV9cdGV4dHJte1B9fXtcdGV4dHJte1p9X1x0ZXh0cm17U319PVxsZWZ0ICggXGZyYWN7XHRleHRybXtOfV9cdGV4dHJte1B9fXtcdGV4dHJte059X1x0ZXh0cm17U319IFxyaWdodCApXnsyfQ==ZP - Primary impedance
ZS - Secondary impedance
NP - Number of turns in the primary
NS - Number of turns in the secondary

Transformers are electrical devices that follow the principle of mutual inductance. It has primary and secondary windings that are not physically connected but are linked by a magnetic field. When there’s a voltage source that produces alternating current connected to the primary winding, there’s going to be an induced voltage across the secondary winding. If there is a load connected to the secondary winding, the induced voltage across the secondary winding can be used to provide current to the load.

Although we can just connect the load directly to the voltage source, the real purpose of a transformer is that if the load requires an AC voltage lower or higher than the voltage source provided, the transformer can step down or step up the voltage source by having more or fewer turns in the secondary winding compared to the primary winding. These equations will help you determined the parameters of a transformer when you are using a transformer in your application or design a transformer yourself.

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