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Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
I doubt it and the word you're looking for is a boost converter, not a voltage amplifier which would need a higher voltage than 12V in the first place.
The probably just connect the LEDs in many different strings, for example for 20 red LEDs, four strings of five could be used.
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