DIY regulated power supply using 300W isolation transformer+ XY5008 module, constant voltage/current

- Isolation transformers provide galvanic isolation; no conductive path is present between source and load. It protect us from electrical shocks between energized conductors and earth ground.
- My 300W isolation transformers take from old overhead projector
- XY5008 mudule: https://s.click.aliexpress.com/e/_9Q6y6z or https://s.click.aliexpress.com/e/_9AKcrL or https://s.click.aliexpress.com/e/_AFQ4a9 or https://s.click.aliexpress.com/e/_AYw0wl or https://s.click.aliexpress.com/e/_AbPuE5
- ABS box: https://s.click.aliexpress.com/e/_ASWr8H or https://s.click.aliexpress.com/e/_APsDTL or https://s.click.aliexpress.com/e/_AYwT1P
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- About XY5008 step-down module:
Features:
+1.8 Inch screen
+Up to 95% efficiency
+The remote control digital keyboard control, simple operation
+The screen supports 4-way rotation
Specification:
+Input voltage: 6.0-55.00V
+Output voltage: 0.0-50.00V
+Output current: 0.0-8.100A
+Output power: 400W
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