Series resonance under Wuhan UHV can help many power workers conduct various types of power tests more conveniently.
The application of parallel power supplies and series power supplies in circuits each has its own characteristics and advantages. The following is a detailed comparison of the two:
1. Definition and connection method
Parallel power supply: Connect the positive poles of multiple power supplies in parallel, connect the negative poles of multiple power supplies in parallel, and connect the positive and negative poles of each power supply to each other. In this connection mode, the output voltage of each power supply is the same and the current can be divided.
Series power supply: Connect the positive and negative poles of multiple power supplies in sequence to form a series circuit. In this connection mode, the voltage of the overall power supply is the sum of the voltages of the individual power supplies, and the current remains unchanged.
2. Voltage and current characteristics
Parallel power supply:
Voltage: The voltage of the overall power supply remains constant and is equal to the voltage of the individual power supplies.
Current: The current of the overall power supply is the sum of the currents of each power supply, that is, the current can be divided.
Series power supply:
Voltage: The voltage of the overall power supply is the sum of the voltages of the individual power supplies and increases as the number of power supplies increases.
Current: The current from the overall power supply remains constant and is equal to the current through a single power supply.
3. Stability and impact
Parallel power supply:
Stability: Parallel power supplies will not affect the stability of the overall power supply because each power supply is relatively independent, and the failure of one power supply usually does not affect other power supplies.
Application occasions: It is often used in occasions where the operating voltage of the circuit is required to be constant but the operating current of the circuit needs to be increased, such as LED light sources, audio amplifiers, etc.
Series power supply:
Stability: The stability of a series power supply may be affected by fluctuations in a single power supply. Because the power supplies are connected in series, changes in the voltage of one power supply will directly affect the voltage of the overall power supply.
Application occasions: It is often used in occasions that require the circuit operating voltage to increase but the circuit operating current to remain unchanged, such as high-voltage power supplies, fluorescent lamp drivers, etc.
4. Advantages and Disadvantages
Parallel power supply:
Advantages: The voltage is stable and the current can be shunted. It is suitable for occasions that require large current but stable voltage.
Disadvantages: More power supplies may be required to provide sufficient current, which may be more costly.
Series power supply:
Advantages: Voltage can be superimposed, suitable for occasions that require high voltage but constant current.
Disadvantages: Stability may be affected by a single power supply, and you need to ensure that the voltage and polarity of each power supply are consistent.
5. Other matters needing attention
When connecting power supplies in parallel, it is necessary to ensure that the output voltage of each power supply is the same to avoid circulating current problems caused by voltage differences.
When connecting power supplies in series, you need to ensure that the polarity of each power supply is connected correctly, and the voltage and current must meet the circuit requirements.
To sum up, there are significant differences between parallel power supplies and series power supplies in terms of voltage, current, stability and application scenarios. In actual applications, the appropriate power connection method should be selected according to specific needs.
