9 years ago All the fan needs is the 12 volts of DC voltage, if it is rated for 12V. Locate the Cooling fan relay. We will be using a butt connection to fuse these together. It has three wires connect to the motor, a yellow, red, and black. Sorry if this is not original. It holds 4 AA batteries but it's labeled at 4 x 1.5v? Connect the other switch terminal to the negative terminal of battery #2. You can now clip the bottom back onto the fuse box and use the plastic plug you removed in step 2 to secure it back in place. Strip 1/2 of an inch of insulation off of the red and black wires attached to the computer fan. If you do this maybe you will be lucky and only destroy your floor from the acid leakage, not including what these gases are doing to your Computer as the fan(s) suck them trough your box. The battery is working as a clock on newer computers. I've haven't had one explode but they die quickly. Be aware, though, that the greater the wattage, the faster you will drain down your battery. Connect the other switch terminal to the negative terminal of battery #2. clearly there is 2 (-) and 2 (+) but can i hook it all to one battery or should i get two batterys one for each fan?also if its a 12 v dc what size battery should i use to get more then just a couple of hours ?thanks! To add another fan, just connect the wires of the same together. When you connect 2 batteries in parallel, you are connecting the positive side of 1 battery to the positive side of the 2nd battery and the … just hook up red charger cable to red pc cable wire, and black/yellow charger wire to black fan wire, snip any other pc wires, not need, mines work a charm, fone chargers are 9v but can run a 12v fan without burnout.. hope this helps as … Used 4-wire fan for these two projects: How to reverse the rotation of DC brushless fan motor from PC - . Extend the other end of the jumper wire over to the positive terminal of the battery. Using the wire cutters, cut that green wire in half. So maybe to make it safer, you could connect 3v in series with the 9v? Could I dismantle something like a toy helicopter remote control and use the slider on/off switch? You can easily run a 9v battery on the 12v fans. I have a battery holder for 3 AAA batteries (4.5 volts), which will run a small computer fan but not a larger one, and I just ran it briefly because I feared the same fate. I am willing to cut the wires or anything i need to do to get this thing to run on a 9 volt battery. Introduction: Super Easy Battery Powerd Computer Fan. This can easily be sorted by placing a some silicon rectifiers in series to drop the voltage a little which is possibly easier than using dropper resistors (as the diodes act as constant … just use a 12 volt supply, Reply Hello, I need to wire a new fan into my RV. Run a 20 amp fused wire from the battery to the #30 terminal on the relay. 8 years ago Share it with us! For this step you will need a dremel to cut the plastic so the switch will fit. hello , im lost . Take a look. So you would still only use 2 connectors all together. When the computer is switched off the real-time clock gets power from the battery to function. Plug the fan into the power inverter. DO the Math. on Introduction, Okay, for one, don't do this ever again Aaroncake: How To Properly Install An Electric Fan ; Things You'll Need. Related Post: A Complete Note on Solar Panel Installation with Calculation & Examples; The DC load (light & fan etc) is directly connected to the charge … I'm currently constructing a mascot costume that will be featuring fans to keep the wearer cool. If you connect one wire(Fan) to one USB wire and then try connecting one 3 USB wire, to all 3 remaining USB wires, there will be so many possibilities!! Connect one end of the wire to the negative terminal of battery #1. Polarity must be consistent between the two. matter of fact I run up to 5 of them off a pair of 9v fans in parallel. You also can get battery holders, which attach to devices just as 9 volt batteries do. 5 years ago Question of course i could be wrong. positive terminal of battery is connected to the positive terminal of charge controller and vice versa for negative terminals). on Introduction. This will be the wire that connects your switch to your fan power wire. Once this is in place, this is all that is needed for the fan to work. Toy hovercrafts and toy water boat propulsion are the first projects that come to mind. You also can get a holder for 8 AA batteries, which equals 12 volts, so maybe that might work (haven't tried it yet). on Introduction. I cut the end off and tried connecting it to an: "AC Adaptor" "Class 2 Power Supply" Input: 120VAC 60hz 15W Output 12VDC 600mA The plug has 2 wires. If the connector fits the pins, it'll work, and you don't have to worry about the pin arrangement. How do I wire a 3-wire CPU Case fan to a regular plug? supplies needed: allen keys phillips screw driver wire cutter/strippers dremmel or other metal cutting tool in your arsenal brushless 12v computer fan and the 4 nuts and bolts fan grill/cover First things first,I reinstalled my amp upside down as there is no venting from the top.The bottom has slits so that should help a little as well. 3 years ago Tip I built a "bathroom" for my cat and his litter box that uses a carbon filter and inline fan exhausted to the outside which works great, but currently I'm using a 110 AC fan plugged into an inverter and it only lasts about 5-7 hours on the battery. You should probably as a precaution,remove the … I want to wire my coputers colling fan to run on a 9 volt battery, It has 3 wires (red yellow black) coming out of it with a small plastic thing at the end. Cut both wires and strip 1/2 an inch of insulation off of the ends of the two fan wires. 9 or 12VDC DC Fan; DC Power Supply; Batteries … Connect the red computer fan wire to the positive terminal of battery #1. on Step 5, get a car battery or a atx psu or a atx test bench psu. You will also require a 12 volt battery. Any value between and around thirty-two … To be safe, you should secure this connection with a little solder. Or, dismantle an old computer and unscrew the fan inside. on Step 4. it would be diffrent if it was anything other than a motor. The base of the transistor is actually the fourth wire. You are going to have to look at the fan itself to see if it says 12V. Strip fan wires. Connect the wires on the fan (red wire positive, blue wire negative) to the appropriate terminals on the battery, and connect the appropriate wires on the solar panel to the battery. Connect the wires on the fan (red wire positive, blue wire negative) to the appropriate terminals on the battery, and connect the appropriate wires on the solar panel to the battery. Here, the fan speed is typically controlled by increasing or decreasing the voltage over the power wire, as in the case of a common 2-wire fan. In a 3-wire fan, the extra (third) wire is the ‘tachometer’ signal (Tacho) wire that indicates how fast the fan is running. The speed of DC fans is a function of the DC voltage level being applied. So esentially U get 18v rather 9v wich will give you enough Volts to cover the 12 needed for the fan. Ron This method, however, only works safely with a direct-current (DC) fan, and not an alternating-current (AC) fan. However, the 4-wire fan is a little different as it has the fourth ‘control’ wire to input a signal to the fan that commands it to speed up or speed down. A computer fan (the bigger it is … AC fan speeds are generally determined by the frequency of the AC power attached to them. Locate the green wire with the white stripe on it. The wires will remain connected to the fan. You may have seen them, it's essentially a computer fan that pulls air from the outside, into a container filled with ice, and then there is a vent of sorts that the cooler air is pushed out of. 12v computer fans use their black wire as +12 and the red wire is ground. The computer fan should come on. Hey, How long does a standard 9V battery last with this setup? I'd like to make a portable air conditioner using a 12v fan powered by 8 AA batteries. See the pictures below for the exact location. For a remote battery, it can be connected to a power port in the engine compartment, but it should be fused. References. Add Tip Ask Question Comment Download. Separate the green wire leading to the fan relay from the other wires. on Introduction. However, a fully charged car battery is actually over 12v and can have up to 15v on it's terminals when being charged (see source). on Introduction. Like this, a computer always shows the exact time. Next you will want to wire the switch between the positive wire. 11 years ago CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN) Connect the fan cable to the fan connector on the motherboard, ensuring that the black wire of … i recommend against doing this! Ok now all you have to do is put a wire tie on there to keep the wires organized and your done! Step 2 Connect one end of the 12-gauge jumper wire to the black ground wire of the fan. Then connect the positive clamp (usually colored red) onto the positive post on the battery. One is … Run a wire from ground to the #86 terminal on the relay. I'd like to make a portable air conditioner using a 12v fan powered by 8 AA batteries. A 2-wire fan is controlled by adjusting either the dc voltage or pulse width in low-frequency PWM. 6 years ago Small fans like this run on 12 DCV power, but because it will be running constantly, a battery wont do -- I need constant power, forever. Sun-Mar suggests a deep cycle marine battery for best results. Wiring a potentiometer to a fan is a simple way to control the speed of the fan. Reply If you dont have red and black wires i guess your going to have to figure out which ones are negative and positive. Actually steve, many fans designed for use inside a computer case do run on 12v.
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