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What is the use of MAX232?
The MAX232 is a dual transmitter / dual receiver that typically is used to convert the RX, TX, CTS, RTS signals. The drivers provide TIA-232 voltage level outputs (about ±7.5 volts) from a single 5-volt supply by on-chip charge pumps and external capacitors.
What are capacitors used for in power systems?
Store Energy: Like individual capacitors, capacitive banks store electric energy when it is connected to a charging circuit and release that energy when discharged. Capacitors are commonly used in electronic devices to maintain power supply while batteries are being changed.
What do capacitors do on a MAX232 circuit?
Kindly refer to the following typical MAX232 circuit: I am still not quite sure I understand capacitors correctly, and while building this circuit, I realized that I wasn’t understanding what the purposes of the capacitors I was sticking onto the breadboard were. My guess is that they are all used for power conditioning, or decoupling.
How does a dual voltage MAX232 oscillator work?
When you power this MAX232 with single-voltage 5V supply, its V+ and V- pins are able to generate a dual supply: a positive voltage greater than 5V and a more or less equal but opposite negative voltage. How that kind of thing works is that an oscillator drives a network of diodes and capacitors: look up the term charge pump.
Is it better to use MAX232 for Education?
From an education perspective, it is better to use MAX232 with 1-µF support capacitors. For one, you learn a lot more that way, and it is cheaper if you already have some recycled capacitors.
What kind of voltage do you need for MAX232?
This protocol requires a voltage between -3 V to -15 V to represent binary 1, and a voltage between +3 V to +15 V to represent binary 0. For CMOS and TTL communication, this is incompatible since TTL uses +5 V to represent binary 1 and 0 V to represent binary 0.