As two common types of power supplies, linear regulated power supplies and switching regulated power supplies have significant differences in circuit design, performance characteristics, and application scenarios. Understanding the characteristics of these two power supplies and the differences between them will help us make the right choice for different electronic device designs.
How it works:
The linear regulated power supply stabilizes the output voltage by adjusting the impedance of the adjustment tube connected in series at the input terminal and changing the voltage drop of the tube. Its working state is the most sexual, hence the name. The switching regulated power supply regulates the output voltage by controlling the on-off time of the switch. When the switch is on, the power supply charges the capacitor, and when the switch is off, the capacitor is discharged, and the voltage is adjusted in this way.
Efficiency & Power Consumption:
Because the linear regulated power supply is always in a linear state during operation, its efficiency is relatively high, and its own power consumption is low. However, the switching regulated power supply has a large power consumption and voltage drop during the switching tube breaking process, so its efficiency is relatively low. However, switching regulated power supplies are more adjustable, allowing output adjustment over a wider voltage range.
Application Scenarios:
Linear regulated power supply is suitable for occasions with high requirements for power supply stability, small load current and little change, such as some precision instruments, meters, etc. The switching regulated power supply is suitable for occasions that require large current output or need to adjust the output voltage in a large range, such as computers, televisions, servers and other equipment.
Summary: When choosing a linear regulated power supply or a switching regulated power supply, we need to consider multiple factors such as power consumption, efficiency, load current demand, and stability requirements of the equipment. Understanding and rationally using the characteristics of these two power supplies is the key to ensuring the performance and stability of electronic equipment.