5V系・3.3V系信号レベル変換
Designing a Simple Over-Voltage Protection Circuit using Zener Diodes
3.3V Sensor Interfacing - ABDien
Making 3.3V, 5V Voltage Regulator Circuit with Diodes and Transistors | Homemade Circuit Projects
How to interface a 3.3V output to a 5V input. – next-hack.com
34 Values 0.5w Zener Diode Kit Rectifier Assortment 2v 3v 3.3v 4.7v 5v 5.1v 5.6v 7.5v 10v 12v 13v 15v 18v 24v 30v 33v 200v Set - Diodes - AliExpress
digital logic - Is it possible to use a simple diode and pullup resistor to level shift down in one direction? - Electrical Engineering Stack Exchange
Zener Diode as Voltage Regulator Tutorial
Schottky Diode Bi-Directional Logic Level Conversion
Supplying power Nokia 5110 display - Displays - Arduino Forum
USB Based Zener Diode Voltage Regulator Circuit
5V to 3.3V logic level translation/conversion/shifting: how to interface a 5V output to a 3.3V input. – next-hack.com
Diodes - SparkFun Learn
5V to 3V Regulator Using Diode - YouTube
IO Level Conversion 3.3V to 5V for ESP8266 | Circuits4you.com
Taking It To Another Level: Making 3.3V Speak With 5V | Hackaday
Zener Diode as Voltage Regulator Tutorial
DIY Power Supply for 5V and 3.3V : 8 Steps (with Pictures) - Instructables
Zener Diode - 3.3V 1W - 1N4728 - BC Robotics
I can't get zener diodes to work as I expect - General Electronics - Arduino Forum
5volt to 3.3volt|how to use 5v to 3v DC Resistance or Diode|Electronics project by Punit Kumar| - YouTube
XBee Level Shifting – Rob Faludi
