pc fan voltage

We're dedicated to providing top-notch advice and reviews for choosing your next PC build. Damit sorgen sie für ein Nachströmen kühlerer Umgebungsluft und somit für die notwendige Kühlung der Elektronikkomponenten. This automatic control offered by some chips may be called Thermal Cruise mode for maintaining a thermal envelope, as well as Fan Speed Cruise mode for maintaining a specific fan speed automatically.[10]:§12. Top 10 Best Pc Fan Voltage Reviews Of 2021. The port that the fan connects onto the motherboard is known as the fan header. 4-pin PWM (pulse width modulation) can be dynamically controlled by software and hardware very easily. As soon as you begin trying to quiet your PC, you realize how useful it is to be able to provide lower than 12 volts DC (VDC) to fans in the system. (Add up the amperage of the fans and ensure that the total is lower than the switch rating.). Another method of reducing the fan speed[5] is by moving the 5 V wire in the classical Molex power connector in the place of the Ground wire going to the fan, thereby delivering +7 V (12 V − 5 V = 7 V) to the fan. They only cost a little more than regular PC fans. Silent PC Review has been providing expert advice and detailed reviews of PCs and peripherals since 2002. Most PCs don’t provide any way to control the speed of the fans. Also note that sometimes the ground ( – ) wire from the fan is not black, but blue. When the temperature drops below a threshold again, the fans are turned back off. This will fry your components. It took me less than 15 minutes to build & cost about $2. Habe jetzt hinten ein Loch reingesägt, einen 120mm Lüfter daran geschraubt und den Lüfter an den PC angeschlossen. There may be accessories you can buy, but sometimes, things like fan bays are overkill. ], is the manual fan speed controller. The exact speed behavior (linear, off until a threshold value, or a minimum speed until a threshold) at low control levels is manufacturer dependent.[9]. Fan control is the management of the rotational speed of an electric fan. Any desktop PC with standard case fan mounts will work (80mm, 120mm, 140mm, 200mm—it doesn’t mater as long as they’re consistent). Ist dies nicht der Fall, empfehlen wir Ihnen, den Lüfter schnellstmöglich auszutauschen um weitere Schäden am Computer zu vermeiden. That’s it. Peltiers or things with power consumptions running up to dozens of watts, require careful calculation of what goes out of the 5V lead and what’s going in there from the 12V lead. Just plug the male IDE connector to a spare from the power supply. It should provide some information as to the manufacturer, the size of the fan and the direction of airflow. Only 2 parts are required: a small toggle switch that cost $1.30 and a male IDE power connector (with pins pre-wired) that I had kicking around. Few PC components are so critical to the performance of your computer, yet so inexpensive than your PC fans. Here’s a photo of my setup, inside and out. Computer fans vary in size and voltage requirements. There are a few ways to perform this regulation, as described below. Control CPU Fan in the BIOS . [10]:§11.3 This may not be a problem until the system or the utility crashes, at which point the system may overheat due to the failure of the fans to maintain adequate cooling whilst running at reduced voltage and speed. Eines für die Masse (0 V) und das andere für die Versorgungsspannung (+ 12 V). It is possible to use a rheostat instead. Since the voltage drop is proportional to the current, the fan may not start. Since usual fans only use 1…3W, you are usually perfectly safe with using the 7V trick there. Cooling fans equipped with either two- or three-pin connectors are usually designed to accept a wide range of input voltages, which directly affects the rotation speed of the blades. In this style of fan control, the fan is either on or off. A diode in series with the fan will reduce the voltage being output to the fan. Temperature inside the chassis is checked, and if an outside-of-range temperature is detected, fans are set to their maximum speed. when PC enters idle/sleep state). Your email address will not be published. For example: Your fan uses 100mA at 7V. Two such programs are SpeedFan[24] and Argus Monitor. CPU-Lüfter steuern und Lautstärke anpassen mit SpeedFan. 17 posts knopix. When thermally bonded to the computer's chassis, one of these ICs can provide up to 1 A of current at a voltage of 6, 8, 9 or 10 V for the LM7806, LM7808, LM7809 and LM7810, respectively. The positive lead (+) is almost always red for all electrical or electronic components. Active 4 years, 4 months ago. leider ist das Problem, dass der Schrank komplett geschlossen ist. A soldering iron is recommended but not necessary if you use a switch with screw terminals. [1], As modern PCs grow more powerful so do their requirements for electrical power. It requires only 2 parts: a switch and a male IDE power connector. Some fans, such as the tower cooling fans, operate at 12 volts while Central Processing Unit (CPU) fans may operate at seven volts. Fans are usually the noisiest items found in a computer, and often run unnecessarily fast - a 1.5GHz Athlon may well need the fan to be turning at 4,500 rpm, but a lesser machine with a good quality heatsink probably doesn't. Viewed 6k times 2 \$\begingroup\$ I have a 3 pin 12 V Fan, rated at 2000 RPM max. Top 10 Best Pc Fan Voltage On The Market . 25kHz is used to raise the sound of the signal above the range of human hearing; use of a lower frequency could produce an audible hum or whine. [needs update] If done properly fan noise can be drastically reduced. With this type, fan speed is typically controlled by increasing or decreasing the voltage over the power wire. Its rated specs are: 12V 0.20A. It’s probably wise to remove all the components from the case before drilling — or drill before installing any components. Most fans have 3 wires/pins. This must be done cautiously, as excessive reduction in speed may cause components to overheat and be damaged. A DPDT switch has three positions (2 polarities), and can switch two independent circuits at one time. Required fields are marked *. 12V headers operate via analogue signal and 5V headers are digital signals. If you plug something between the 12V and 5V lead, you have to be absolutely sure, that no current is fed back into the PSU. ; updated Dec 14, 2003 (to include 7V information). As with other linear regulators, the waste heat that is produced will be roughly P = (Vin - Vout) Iout.[8]. It’s also useful to check whether the fan is working if you have one that’s silent at 5V — like I do in some of my systems. This control method reduces noise issues and power requirements during periods of low usage, but when the system is operating at capacity, the fan noise can become a problem again. You will also need a soldering iron or gun and wire strippers or cutters. Prüfen Sie zunächst, ob Ihr Lüfter ordnungsgemäß arbeitet. Simple as can be. The Open Hardware Monitor supports most hardware monitoring chips found on todays mainboards. 15,69 € 15,69 € "pc lüfter 12v 2pin" Neuftech 120 mm PC Gehäuselüfter Netzteil Lüfter leise Kühler 2 pin DC 12V - rot. Components . by Mike Chin 4.6 out of 5 stars 6,981. By varying the voltage input across the acceptable range for a fan, the speed of the fan will increase (to added voltage) and decrease (to reduced voltage); a faster fan means more air moved and thus a higher heat exchange rate. One to supply the voltage (red), another is neutral (black) and the other is used to control the fan speed (yellow). While discrete regulators require additional components (a minimum of two transistors, three resistors and a small capacitor), they allow for arbitrarily high currents, allowing for the regulation of additional fans and accessories. Also, the components inside the computer using +5 V power might be exposed to over 5 V in case of a short circuit in the fan. A clamp or vise to hold the switch will be handy; a pair of pliers can also be used. Using switches or knobs, attached fans can have their speeds adjusted by one of the above methods. Fans may be either 5 Volt DC or 12 Volt DC fans. Dabei gingen die Meinungen über nerfende Töne sehr aus einander. There are usually many small holes on the back panel that the switch can be mounted in. A silicon diode provides a relatively constant voltage drop of about 0.7 V per diode; data sheets for a specific diode specify its voltage drop, for example the 1N4001 silicon diode's voltage drop varies from approximately 0.7 to 0.9 V as the current varies from 0.01 to 1 A. I am trying to measure the current of a DC computer cooling fan (Intel E18764-001) at various voltages. Möchtet ihr die Lüfter runter- oder hochregeln, geht das am schnellsten mit der kostenlosen Software SpeedFan. Typically a fan can be driven between about 30% and 100% of the rated fan speed, using a signal with up to 100% duty cycle. For higher currents, discrete linear regulators are relatively simple to construct using a power transistor or MOSFET and a small signal transistor or a Zener diode as a voltage reference. About 0% of these are Fans & Cooling. 3-pin DC connectors also run at full power, but your motherboard can limit the voltage going to them, thereby altering the speed. The control signal is a square wave operating at 25 kHz, with the duty cycle determining the fan speed. Most chassis fans run on 12v power. To obtain 7V, the red fan wire goes to pin #1 (yellow), and the black fan wire goes to pin #4 (red). Computers emit this electrical power as heat generated by all major components. So habe habe ich meinen CPU-Lüfter gekauft, der Verkäufer und 2 weitere Kunden waren dabei und nach drei hörtest habe ich den für, mich am leisten CPU-Lüften entschieden. Your email address will not be published. Ask Question Asked 4 years, 4 months ago. So I am suspecting that this is telling me: & There may be accessories you can buy, but sometimes, things like fan bays are overkill. Power supplies needed forced cooling, and power supply fans also circulated cooling air through the rest of the PC with the ATX standard. March 26, 2002 100mA are sucked out of the 5V lead, 100mA come from the 12V lead and 200mA go to ground. Check it out here. Heat production varies with system load, where periods of compute-intensive activity generate much more heat than the idle time does.[1]. There are also third-party programs that work on a variety of motherboards and allow wide customization of fan behavior depending on temperature readings from the motherboard, CPU, and GPU sensors, as well as allowing manual control. The easiest way to determine what fan you need to replace your existing chassis fan is to remove it and check the markings on it. One situation where a slower fan is definitely beneficial is when a CPU fan in an older machine needs replacing. If the PC fan really does have has a brushed motor, then you can just control it with PWM. 120mm Case fans, Voltage question. Eine einfache Lüfter-Regelung besteht aus zwei Kabeln. Get it as soon as Tue, Feb 23. The voltage drop across the diode will fall with temperature, causing the fan to speed up. There are no real options as such, apart from a function to save monitoring or SMBus data to a text file. You cannot connect the 5V signal cable to the 12V header. However, all the PC fans I have come across use brushless motors, which don't work very well if you PWM the supply voltage. (It is usually quite safe for a low wattage fan or two, but if you want to be perfectly safe, you may want to avoid the 7V tap.) A wide variety of pc fan voltage options are available to you, such as application, certification, and type. Most modern motherboards feature hardware monitoring chips, which are capable of performing fan control,[1] usually through the PWM method as described above. Forums. Enjoy. 3 sets of values are displayed; the current values and the minimum / maximum values since the program was started. Which means, that you need to have other loads on that 5V lead, which suck out more current than you feed to that lead from the 12V lead. Through this procedure, 10, 17 and 24 V voltages can be achieved, with voltages exceeding 12 V being potentially damaging to the computer fans rated at 12 V. However, the combination of modern power supplies no longer being required to provide a −5 V power line and the limited power delivery capability of the −12 V line (usually less than 1 A of current) reduces the total capacity for volt modded fans in modern systems. The signal wire measures how fast the fan is moving without any controls for the fan’s speed. Sometimes all you want is to be able to switch between high and low speed. The switch will toggle the fan between 12VDC and 5VDC. In which case you should move on to the next method. ELUTENG Lüfter USB 120mm PC Lüfter mit 3 Einstellbare Geschwindigkeiten,USB Ventilator 5V leise kompatibel mit Computer/PS4 /TV Box/AV Schrank/Router MEHRWEG. That's what is happening when I plug it in the motherboard. Habe mir einen neuen Schreibtisch samt PC Schrank gekauft. Made by CPUID who are also responsible for CPU-Z and PC Wizard, HWMonitor is a great tool for displaying the majority of your systems temperatures, fan speeds and voltages. Many motherboards feature firmware and software that regulates these fans based on processor and computer case temperatures. Since they must move more air through the same area of space, fans will become more noisy. The common cooling fans used in computers use standardized connectors with two to four pins. The fans will not be able to directly connect either. Posts: 174. Most PCs don’t provide any way to control the speed of the fans. They need to be of the appropriate power rating. The picture below shows how the various voltages can be obtained: Note that the pins on the IDE power connector are not colored; the wires that lead to them are. Increasing the voltage[4] over the default 12 V can be achieved by e.g. A standard cooling fan is a DC motor with blades attached. The method by which the software physically controls the fan is usually PWM (see above). These chips can be configured through BIOS,[10]:§11.1 or by using specialised software once the operating system has booted. This simple project describes how to rig up a switch that will let you feed 5 VDC to your fan(s) for low noise operation, and 12 VDC when more cooling is needed for hot weather or a bout of serious overclocking. Wise, Aged Ars Veteran Registered: Jun 23, 2003. Use Voltage for a 3 pin connector; Lastly, this method will only allow you to control the speed of CPU and system fans. The first two pins are always used to deliver power to the fan motor, while the rest can be optional, depending on fan design and type: The color of the wires connected to these pins varies depending on the number of connectors, but the role of each pin is standardized and guaranteed to be the same on any system. Processors in most early x86-based computers, up to some of the early 486s, did not need active ventilation. Nov 30, 2012 67 0 10,630 0. Modern hardware monitor chips, once configured, are capable of independently running this monitoring loop without any need for a functioning BIOS or an operating system. The CPU temperature can be monitored by reading the core temperature sensors of Intel and AMD processors. Logic Supply CL100 Fanless Braswell NUC PC, AMD A10-7860K & Athlon 880K: Kaveri Refresh, 7263 Winchester Ave. West Bloomfield, MI 48322. You take 100mA from the 12V lead and feed them into the 5V lead. You can wire up several fans in parallel to the same switch — but watch that the ampere rating of the switch is not exceeded. Große Auswahl an PC Lüfter auf dem Conrad Marktplatz Gratis Lieferung ab 59,50 € Bis zu 3 Jahre Garantie mit kostenloser Kundenkarte möglich Like other series regulators, the diode will dissipate power equal to its voltage drop times the current passing through it. A soldering iron is recommended but not necessary if you use a switch with screw terminals. They can be mounted in an expansion slot or a 5.25" or 3.5" drive bay or come built into a computer's case. The sense pin is used to relay the rotation speed of the fan and the control pin is an open-drain or open-collector output, which requires a pull-up to 5 V or 3.3 V in the fan. Save my name, email, and website in this browser for the next time I comment. Amazon's Choice for 9 volt fan. Dank dieem Adapter läuft der Lüfter wunderbar auf voller Leistung. [6] Adjustable versions like the popular LM317 also exist; when combined with a potentiometer, these adjustable regulators allow the user to vary the fan speed of several fans at currents far in excess of what a standard potentiometer could handle.[7]. Thread starter joeflint82; Start date Dec 12, 2012; Tags Video Games; Sidebar Sidebar. Processors produce varying levels of heat depending on system load, thus it makes sense to reduce the speed of the fans during idle to decrease the noise produced by fans running full speed, until the load does goes up, at which point fan speed must be adjusted promptly to avoid overheating. October 29, 2019 November 20, 2004 Jack Sparrow Leave a Comment on Top 10 Best Pc Fan Voltage Reviews Of 2021. Interest has been growing in integrated circuits for controlling the speed of cooling plus countless trade shows and industry articles. However, this is a potentially risky method, because +5 V PSU line is intended to source current only, not sink it, so the PSU is likely to get damaged in case of load on 5 V PSU line being below the load generated by 7 V fans (e.g. PC-Lüfter: Die PC-Lüfter (öfters auch als Computer-Ventilatoren bezeichnet) transportieren durch ihren erzeugten Absaugluftstrom die Wärme aus dem Rechner. The IDE pin numbers referenced are as shown in the previous IDE connector drawing. 4,4 von 5 Sternen 2.898. By connecting one or both wires to a different voltage, the voltage the fan receives will be different from the default 12 V the fan was designed for. Electronic. There a lots of devices in typical computers, which draw much more power out. Laufrichtung Umkehren is in dem Sinn Sinnvoll, dass man den Lüfter nichmehr abbauen muss wenn man ihn mals saugend statt blasend machen möchte, Aber funktionieren tut es trotzdem nicht, habs getestet lüfter an 9 Vold batterie und nur nur mit einer Kabel Kombination gehts, also kabel einfach Polung tausche geht nicht. Since fan noise increases with the fifth power of the fan rotation speed,[2] reducing revolutions per minute (RPM) by a small amount potentially means a large reduction in fan noise. However I don't like that, because the fan is making a lot of noise. To obtain 12V, the red fan wire goes to pin #1 (yellow), and the black fan wire goes to pin #2 or #3 (black). [3] The power rating should be noted and some diodes may require cooling to operate at their rated current. To obtain 5V, the red fan wire goes to pin #4 (red), and the black fan wire goes to pin #2 or 3 (black). Unter Umständen ist auch der Lüfter des Prozessors defekt. This control method reduces noise issues and power requirements during periods of low usage, but when the system is operating at capacity, the fan noise can become a problem again. If you have to drill, take care not to let the metal shavings get into your components. Another method, popular with gamers[which? The voltage a computer cooling fan receives is defined by the difference between the voltage wire (+12 V) and the ground wire (+0 V). Many companies now provide software to control fan speeds on their motherboards under Microsoft Windows or Mac OS X/MacOS. For variable fan control, potentiometers could be used along with a transistor such as a MOSFET whose output voltage is controlled by the potentiometer. AW: Drehrichtung von Lüfter umkehren möglich? Unlike linear voltage regulation, where the fan voltage is proportional to the speed, the fan is driven with a constant supply voltage; the speed control is performed by the fan based on the control signal. When the temperature drops below a threshold again, the fans are turned back off. The photo below shows the switch with IDE “male” connector and fan, all soldered together and ready to go. In computers, various types of computer fans are used to provide adequate cooling, and different fan control mechanisms balance their cooling capacities and noise they generate. Pulse-width modulation (PWM) is a common method of controlling computer fans. The byproduct of increased heat generation is that the fan(s) need to move increasing amounts of air and thus need to be more powerful. The easiest way to adjust CPU fan speed is through the BIOS. Deciding on a cooling approach that matches your case and your components before you go shopping for fans and coolers can be helpful. Zur Drehzahländerung kann man wahlweise die Versorgungsspannung A three pin connector is basically power (5/12 volt), ground, and signal. The images below explain more clearly. The CPU fan is usually supplied with a 3V or 5V from the PSU (power supply unit) on laptops and 12V on desktops. connecting the −12 V or −5 V power line instead of the ground wire in the fan connector, and by connecting the 5 V power line in the +12 V input of the fan connector. Computer fans can also be used for a number of hobby projects that are not computer related. [25], Learn how and when to remove these template messages, Learn how and when to remove this template message, http://www.diodes.com/datasheets/ds28002.pdf, "LM317 - Single Channel LDO - Linear Regulator (LDO) - Description & parametrics", "Thermal Considerations for Linear Regulators", "4-Wire PWM Controlled Fans Specification", "Review: SilentTEK - AOpen's mobo-embedded fan controller", "Intel® Desktop Boards - Intel® Active Monitor", "Quiet computing with BSD: Fan control with sysctl hw.sensors and lm(4) on OpenBSD and DragonFly BSD", "SpeedFan - Access temperature sensor in your computer", "Argus Monitor - Software to control CPU, GPU and System fans using any available PC temperature source", 4-Wire PWM Controlled Fans Specification v1.3, Why and How to Control (2/3/4-wire) Fan Speed for Cooling Electronic Equipment, Controlling fanspeeds in Linux on PWM motherboards, Thinkpads and ASUS Eee PC, https://en.wikipedia.org/w/index.php?title=Computer_fan_control&oldid=995673136, Articles needing additional references from April 2014, All articles needing additional references, Wikipedia introduction cleanup from December 2014, Articles covered by WikiProject Wikify from December 2014, All articles covered by WikiProject Wikify, Articles with multiple maintenance issues, Wikipedia articles in need of updating from December 2020, All Wikipedia articles in need of updating, All articles with specifically marked weasel-worded phrases, Articles with specifically marked weasel-worded phrases from December 2020, Creative Commons Attribution-ShareAlike License, Vcc (Power) – nominally a +12 V supply, though it may be variable depending on fan type and desired fan rotation speed, Sense (or tachometer) output from fan – outputs a signal that pulses twice for each revolution of the fan as a pulse train, with the signal frequency proportional to the fan speed, This page was last edited on 22 December 2020, at 07:22. Viel PC-Händler führen CPU-Lüfter vor, dar jeder Mensch verschiedene Töne als störend empfindet. Eventuell sind die Kabel defekt oder haben sich gelöst. Überprüfen Sie ebenfalls sämtliche Verkabelungen des Lüfters. Previous Next J. joeflint82 Honorable. Its nominal voltage is 12 V which will make it spin at full throttle. The sensors of ATI … This simple project describes how to rig up a switch that will let you feed 5 VDC to your fan(s) for low noise operation, and 12 VDC when more cooling is needed for hot weather or for a bout of serious overclocking ;).

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