1. My circuit is powered by +5V. It then runs a MCU with 3.3V (LDO used) & then lcd powered by +5V.
2. Now if any case user coonects higher voltage than +5V then it will damage the lcd.
3. Is there any way to protect it.
4. One way is to place a zener of 5.1V. But usually zener conducts a lower voltage than rated & second its series resistor will limit the current.
2. Now if any case user coonects higher voltage than +5V then it will damage the lcd.
3. Is there any way to protect it.
4. One way is to place a zener of 5.1V. But usually zener conducts a lower voltage than rated & second its series resistor will limit the current.