In this video how to laptop charger adaptor convert to into variable LM2596 DC-DC step down(2v-35v) power supply making
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Download Circuit diagram and detail - https://goo.gl/eTGm1g
https://goo.gl/KuHZZN
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the component is using
1) LM2596 dc-dc buck converter step down module
2) laptop charger
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