2 pin power cord with VDE certification Overview
2 pin power cord with VDE certification is known for its best performance. The plug of the computer 2 pin power cord is marked with a very detailed color code. Specifically, red is +5 V, yellow is +12 V, black is the "cool" wire (Ground).
In addition, you can also use this pin to plug in additional cooling fans and some other devices such as graphics cards. Motherboard: Usually includes 20-24 pins depending on your motherboard. The other version of this plug is 20+4 pins (pairing a 20-pin and a 4-pin connector together.
2 pin power cord with VDE certification uses power connectors and plugs. Power connector for central processing unit (CPU) (+12V power connector: There are two types; four-pin and eight-pin (commonly four-pin, new sources designed for older motherboards). new to use eight pins. Plug types are:
1. So Plug for hard drive, optical drive (ATA interface) (Peripheral connector): Includes 4 pins.
2. Plug for floppy drive: Includes 4 pins.
3. Plug for hard drive, optical drive with SATA interface: Includes 4 wires.
4. Plugs for high-end graphics cards: Includes 6 pins.
Some factors you should know when using the 2 pin power cord
Following are some of factors; that are to be involved in 2 pin power cord with VDE certification
Hold-up time
The Holdup Time value defines how long, in milliseconds, a 2 pin power cord can maintain rated output lines when the input power is cut off (e.g., a power failure). Similarly, this is very useful especially when you live in an area with unstable electricity
(For example, in case the power suddenly flashes and then comes back, the computer can still work normally). The Hold-up time value of the ATX standard is 17ms and the computer 2 pin power cord should have this index as high as possible.
Power Factor Correction (PFC) in 2 pin power cord with VDE certification
PFC allows the 2 pin power cord to be highly efficient. There are two main types of PFCs: Active PFC and Passive PFC. Furthermore, suppliers are of two types. Active PFC has most effective type. It uses an auto-tuning circuit so that the electricity efficiency can reach 95% (theoretically).
In addition, Active PFC is also capable of noise cancellation and power line alignment (allowing you to plug into any common 110V to 220V outlet without having to worry about indicators). However, due to the complex architecture of Active PFC, power supplies using this technology are quite expensive.
PFC power supplies; Active and Passive
In 2 pin power cord with VDE certification; PFC power supplies are used to increase power factor. Some Active PFC power supplies still allow the user to use a switch that determines the input current. Passive PFC: This is most common type today. Unlike Active PFC, Passive PFC aligns the current through the filter capacitors and therefore its ability to work will be changed over time.
Moreover, it would be influenced by external factors such as temperature, shock. Power supplies using Passive PFC technology require the user to adjust input voltage via a small switch. Passive PFC sources are cheaper than Active PFC sources.
Adjustable Pot under 2 pin power cord with VDE certification
Some good power supplies come with small potentiometers inside to correct the voltages of the power lines. In fact, if your 12V power line drops below 11.5V, it will cause instability for the whole system. Keep in mind that the ATX standard allows the voltage per line to fluctuate.
However, this is an advanced feature and should only be done if you know what you are doing. Some power products completely switch these potentiometers out for users to change freely, such as Antec's True Control series.
Soft Power mode and 5V. Standby signal
Soft Power is the way that the computer 2 pin power cord is turned on or off, but instead of using a hard switch like the old AT standard, it is activated when the BMC commands the 2 pin power cord. 2 pin power cord with VDE certification is used mostly in devices like clocks, radios, and charger of batteries.
You can easily verify this with the ability to shut down the Windows operating system or turn on the computer from the keyboard and mouse. The main rule for BMC to command the 2 pin power cord is through the standby signal of the +5V Standby line.
Power line and its types
This power line is completely independent from other equipment feeds and will have signal whenever you plug in the power, some new BMCs often have a signal light to indicate +5 V Standby status. In addition, there are few other auxiliary power lines on the computer system, including:
Inductive line +3.3V (+3.3V Sense): The main function is to monitor the voltage of the +3.3V line to feed the BMC. 2 pin power cord can align the current accurately.
How the fan operates depending on the voltage?
When the voltage of this line drops below 1 V, the fan will automatically turn off. When a value above 10.5 V is reached, the fan will operate at full capacity. The main function of this design is to allow the system to turn off fan.
Fan Monitor (Fan Monitor): This is a companion to the fan control feature; it allows to monitor the fan rotation speed in the system. Its main task is to warn users when a certain cooling fan malfunctions and stops working.
The basic elements of a good computer 2 pin power cord
Stability of output voltage: The voltage does not deviate by more than -5 to +5% from the rated voltage (indicated on the 2 pin power cord ) when the source operates to its design capacity.
The output voltage is flat, without interference.
High working efficiency, reaching over 80% (Output/input power reaches > 80%)
2 pin power cord with VDE certificationdon’t use magnetic fields, electric fields, interference to other parts around it and must withstand magnetic fields, electric fields, interference from other surrounding objects affecting it.
During operation, 2 pin power cords generates little heat, and noise is small.
The output wires are diverse, with many standard pins, neatly wrapped and anti-interference.
Ensure stable operation with design capacity for long time of operation.
Note: One thing you should note is that the standard power supplies must have quality certification stamps, along with parameters such as power capacity, voltage, etc.
How to buy the right 2 pin power cord with the capacity of the compute?
Yes, in the previous article, I shared my experience of calculating the computer's power consumption. If you have not read it, please review this tutorial: Moreover, you will find instructions for calculating power consumption of a desktop computer (PC).
If you choose; any 2 pin power cord that is not up to the mark; it will affect your system’s performance. It is a first must have the 2 pin power cord, which works best you. You need to take this into account and do for the 2-pin power cord with VDE certification. It will give you required specifications.
Epilogue
Okay, that's detailed and clear, isn't it? These are knowledge that I find very good and very useful that you should know about computer power supplies. To be more detailed, it might take lot longer, but we just need to know factors above and it's quite OK
Post time: Jan-14-2022
