The working principle of capacitors in power supply design and the correct selection rules for capacitors in various power supplies 2

3. Voltage capacity: The rated voltage of the capacitor must be greater than the maximum operating voltage in the circuit, and there should be a certain safety margin to avoid damage from overvoltage of the capacitor.diode

4. Capacitor size: Considering the space and heat dissipation conditions of the circuit board, choose capacitors with suitable size and packaging form.diode

5. Temperature characteristics: Select capacitors with good temperature characteristics based on the temperature variation range of the power supply working environment.diode

6. Frequency characteristics: For high-frequency power supplies, select capacitors with good high-frequency characteristics to ensure that they can still operate normally at high frequencies.diode

In summary, the correct selection of capacitors is crucial for power supply design. It is necessary to comprehensively consider factors such as the type, value, rated voltage, size, temperature, and frequency characteristics of capacitors to ensure the stable and reliable operation of the power supply system.diode