hello fellow enthusiasts
i have built a variable power supply for myself. it works fine but it is too heavy and i move around a lot. much of the weight is because of the transformer. then i noticed all these mobile chargers they seem to do with a very small transformer. almost all commercial chargers are very light. and that too unlike my supply where the transformer is the first thing to be connected to the supply here the transformers not the first thing to be connected. Pls shed some light on this.
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i have built a variable power supply for myself. it works fine but it is too heavy and i move around a lot. much of the weight is because of the transformer. then i noticed all these mobile chargers they seem to do with a very small transformer. almost all commercial chargers are very light. and that too unlike my supply where the transformer is the first thing to be connected to the supply here the transformers not the first thing to be connected. Pls shed some light on this.