I'm currently using a powering the MAX232 with 5V DC, and when I measure from VCC to lets say, pin 3, I am getting a voltage reading of around 13V on my voltmeter. Using a power source that is higher than 5V. What is going on? I know it says in the datasheet that there is a voltage doubler, but I am not quite sure how voltage doublers work, other than we need the capacitor.
Hi
MAX232 uses one charge pump to double the supply voltage, and the second charge pump to invert it. The idea behind the charge pump doubler is that capacitors are first charged in parallel, then they are switched such that they are connected in series.
http://electronics.stackexchange.com/questions/131595/how-does-the-max232-double-the-voltage
Hi
The idea behind the charge pump doubler is that capacitors are first charged in parallel, then they are switched such that they are connected in series.
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Waves