Automatic Voltage Changing LED Tester

Circuit Diagram

Scroll down to the bottom of this page for the component list 👇👇

Component list

• 230V to 12V x2 300mA Transformer
• R1,R2 : 330 Ohms 2W
• C1 : 2200uF 50V
• KBP307 bridge rectifier
• Multimeter Probes

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