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DC 3.3V 3.7V 5V 6V to 12V Step-up Power Supply Boost Voltage Regulator – diymore
Pololu - 3.3V Step-Up/Step-Down Voltage Regulator S9V11F3S5
2 in 1 DC DC Step-Down & Step-Up Converter 1.8V-5V 3V 3.7V to 3.3V Power Module [CE021] - USD $1.99 : canton-electronics.com
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operational amplifier - Step up 3.3V to 5V to use as power of op-amp - Electrical Engineering Stack Exchange
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Pololu 3.3V Step-Up/Step-Down Voltage Regulator S7V8F3
Step Up/Down Converter 1.8-5V nach 3.3V 100mA - ShopOfThings
Mini DC-DC Impulse Step Up Converter 3v 3.2v 3.3v 3.7v 5v 9v to 12v Voltage Regulator Pcb Board Module Can Adjust 5v / 8v / 9v – Worldwide Fast Shipping
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Test of DC-DC Step updown 2.5V-15V to 3.3V
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