Your Guide to the Different Types of Power Supplies

Type of Power Supply for Desktop Computers

When it comes to powering your devices, you're likely familiar with the different types of power supplies. But aside from the basic AC and DC types, a wide range of power supplies are available for use in various applications. Whether you're an electronics hobbyist, a student working on a project, or a professional engineer, knowing about and understanding these different types is critical to know which one is right for your project.

AC-to-AC Power Supplies

AC-to-AC power supplies convert AC power from one voltage to another. The AC power is first converted to DC, and then the DC is converted back to AC at the new voltage. These types of power supplies are used in various applications, including computers, office equipment, and home electronics. While AC-to-AC power supplies are generally more efficient than AC-to-DC power supplies, they are also more expensive. As a result, they're typically only used when AC power at the desired voltage is not readily available.

AC-to-DC Linear Regulated Power Supplies

AC-to-DC linear regulated power supplies convert AC current to DC current. They are typically used in devices that require a constant voltage, such as computers. These types of power supplies use a linear regulator to regulate the output voltage. The output voltage is adjustable by a voltage divider, allowing for different types of power supplies to be used in various applications. AC-to-DC linear regulated power supplies feature low noise, high efficiency, and very low ripple.

AC-to-DC Linear Unregulated Power Supplies

AC-to-DC linear unregulated power supplies convert AC current to DC current. They do not use a linear regulator, so the output voltage is not regulated. These power supplies are typically used in devices that can tolerate wide variations in voltage, such as lights. They are usually inexpensive and can provide a small amount of current. They’re also ideal for use in applications that require a consistent voltage and current output.

AC-to-DC Switching Power Supplies

Like other AC-to-DC power supplies, an AC-to-DC switching power supply converts AC current to DC current. However, this type of power supply is slightly different: it uses a switch mode regulator to regulate the output voltage. Switching power supplies are typically smaller and lighter than linear regulated power supplies because they do not use large transformers. As a result, they are often used in portable devices such as laptops.

Battery Power Supplies

Battery power supplies provide DC current from batteries. They are often used in portable devices such as laptop computers and cell phones because they provide a constant voltage even when no external electricity source is available. These types of power supplies can also be used to supplement the main power source in automotive and industrial applications. The most common types of batteries are lead acid, lithium-ion, nickel-cadmium, and nickel metal hydride types.

DC-to-DC Isolated Power Supplies

DC-to-DC isolated power supplies provide an isolated DC current from an external source of DC electricity. Isolation is achieved by using a transformer or inductor coil to create an electrical barrier between the input and output sides of the power supply. These kinds of power supplies are often used in audio equipment to prevent interference from other electronic components in the same device.

DC-to-DC Non-Isolated Power Supplies

As the name suggests, DC-to-DC non-isolated power supplies are a slightly different type of power supply than their isolated counterpart. They provide non-isolated DC current from an external source of electricity. Non-isolation means there's no electrical barrier between the input and output sides of the power supply. These kinds of power supplies are often used in devices where weight and size are important factors, such as laptop computers and cell phones.

ICPS Medical Grade Power Supplies

These types of power supplies are designed for use in medical devices and must meet strict safety standards set by regulatory agencies such as the FDA and IEC 60601 series standards. These standards ensure that medical-grade power supplies will not introduce electrical noise into sensitive medical equipment or pose a risk of electrocution to patients or healthcare workers.

Learn More at Jameco Electronics

Different types of power supply options are available today for all types of electronic equipment applications. Depending on your needs, one type may be better suited for your application than another type. By understanding these differences, you can make an informed decision and get the best power supply for your needs. Be sure to consider size, cost, efficiency, safety features, and other factors when selecting.

At Jameco Electronics, we bring you the widest selection of power supplies and adapters and other electronic components for all your needs. If you have any questions, contact our experts or request a quote for orders. We offer competitive pricing, prompt shipping, and an educational workshop where you can learn more about electronics.