Output voltage select switch 
Ĭheck out our Unregulated Power Supply Tutorial !
Features:
- Ħ-12V input voltage via barrel jack or 2-pin header
- ģ.3V or 5V regulated output voltage
- The two pairs of GND and VCC pins are spaced such that when connected to our Basic Breadboard both power busses will be powered.
Board has both an On/Off switch and a voltage select switch (3.3V/5V). Output power is supplied to the pins labeled GND and VCC. Input power can be supplied to either the DC barrel jack or the two pin header labeled + and. All headers are 0.1 " pitch for simple insertion into a breadboard.
4 SparkFunDescription: This is a very simple board that takes a 6-12V input voltage and outputs a selectable 5V or 3.3V regulated voltage.
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