It is important to find a spot on your desk to mount your power supply before continuing through this instructable. A great option is to use a USB audio adapter as it’ll provide a 3.5mm jack you can connect to your amp’s RCA inputs. Occasionally, the cables will cross. You should use a 12V/13.8V Ham Radio power supply. You can start by connecting two wires to the positive and negative holes of the power supply using solder. Plan a location from which to run an umbilical cord that will connect the RV to shore power. Connecting the Amplifier 1. You’ve got a few different options you can use: If you’re using a toggle switch on the remote wire you can leave the AC/DC power supply plugged in. The face-plate of this power supply is what hides the ugly power converter and holds the switch and connection terminals for the power supply. Also, the way I have mine wired are paralleled, meaning they're both hooked up at the same connection to get the full 12v(FanxFan -2-Adapter). The amp’s internal power supply is controlled by this wire and acts as a shutoff control. Even so, computer power supplies are easy to find and make a great option – if you know how. In my detailed guide, I’ll show you how to wire a computer power supply to a car amp. If you put a 5A or so variac on the input you will have an infinitely variable, isolated power supply - up to the chargers output voltage or depending on variac winding, 20% more. Step 6: Wiring the "Cold" Side. And I highly recommend this high-current power supply circuit. If the noise disappears you can connect the wire to those points as a solution. A PSU should never be opened or modified by an unqualified individual. Because of Good performance, the output voltage of 13V to 14V depending on the load. Be sure to get a decent brand as the generic/no-name brand models tend to have sound quality problems and can produce odd noises between music tracks playing on your phone, for example. The cord should have a 30- or 50-amp plug at one end, and a panel of circuit breakers at the other. Pull it back just enough so that you have enough room to work with the wires. The power cord will connect your power supply to the AC mains. Hi. It also can easily supply many amperes. This part is how you connect your project to the power supply. Cut a 12 V+ and COM wire off a 4-pin peripheral cable from the power supply. You can get them on amazon for about 100 dollars and they will give you the 50 amps needed. Check out some of my other great articles: You can also browse all of my info & how-to articles here. Power supplies, often called With the PSU running, You can use a cheap USB to stereo 3.5mm adapter to get a headphone sized jack to connect an audio signal to your amp. These are required to step down the voltage from you Power Supply (24v, 36v, or 48v depending on the kit) to a voltage usable by other devices in your kit. Some of my projects required a lot more current than most ATX or other bench power supplies could handle! One thing you can do is to try using a small gauge wire and connect it between the grounds or metal casing of the car amp, the RCA cables, and the power supply. You can also connect your car amp to your home stereo if you like. All wiring should be done in line with Australian Standards 3000 (general) and 3001 (specific to RVs). If we need the output voltage +12V then IC 7812 is used. Black burn marks may appear on the LED strip, sections of the LED strips will go out, and if left long enough in the wrong place it could even cause a fire. After we got home, I was able to diagnose and fix the issue with the old power converter and get it working. I am not responsible for any damages that may occur as a result of this article. SoundCertified.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. There will be main lines that are represented by L1, L2, L3, and so on. Re: [MendelMax] Wiring 12V Power Supply to Kapton Heater w/Step up converter. 12 volt battery in parallel with a 12v power supply. There are many power supplies available today in the market like regulated, unregulated, variable etc, and the decision to pick the correct one depends entirely on what device you are trying to operate with the power supply. Strip the insulation to leave about 3/8″ to 1/2″ bare wire. Strip the insulation to leave about 3/8″ to 1/2″ bare wire. We recommend using 12V DC equipment. You will then need to cut and drill some holes in your face-plate to mount the components. After the switch part of the face plate is made, its time to add the terminal half of the face plate. Also, be aware that the ratings on these things are generally optimistic, at least for these lower end power supplies. Not all desks will look the same as mine, so you will need to modify your project to fit your own needs. It can also power my Ham radio station! I’ll show you how to. Test It! That means you need to be aware that for higher-power amps you can’t expect to drive speakers with the full power output it’s rated at. You will need to find the black and white wires coming from the power cord, and identify hot and neutral. How To Wire A Computer Power Supply To A Car Amp, Can a computer power supply run a car amp? With this application you should find a 12V power supply capable of at least 40 Watts. The parts you will need are: The RV power converter is the most important part of this project. Make sure to use washers. How a power supply works. Cut into sheath with the flush cutter. The car amp “remote” terminal uses a low-current +12V input to start its power supply & related circuits. To cut out this hole, drill each of the corners with a drill bit the size of your jig saw blade. A typical 12V system might be good for say 100A on the 12V side. I have tried following the advice here and here, and connected the black outside wire on the fan to my PSU -V, and then connected the next, red wire on the fan to my PSU +V. Use a 18-20 gauge wire to jump the circuit (they fit well without slipping). Failure to do so can result in damaged equipment. If you’re like many people and want to enjoy music, movies, or more from your laptop there’s a problem if you don’t have a line-out or headphone jack – or if it’s just not working. Locate a converter near the breaker panel, to transform 120-volt current from the shore connection to 12-volt … They’re not expensive, but it’s a good idea to shop carefully as the “el-cheapo” units don’t always carry the entire audio range well and can cause a loss of sound quality you can notice. and are a good option if your laptop’s headphone jack is broken or none is available. I’ve also put together some great diagrams, tips, and more to help you enjoy your music with less hassle and fewer headaches. Examples of the current output (amps) for a typical 200W supply and a higher-power 700W supply. Watts = Amps x Volts. As stated earlier, the lines at a Xbox 360 Power Supply Wiring Diagram represents wires. You can use a ground loop isolator to break the ground conductor in RCA cables but still carry the audio signal. Jumping a Power Supply for 12 Volts DC. You can then slide the two bolts into the holes. When you want to connect wires to the bolts, use crimp on wire connections. It looks very nice as part of my desk. Mains supply 240V in RVs is still a major energy source and one to be treated with much respect. Be sure to unplug the power supply... 2. A lot of the power supplies that you see on the internet that can only supply 12 volts do not pack very much power. They offer a direct line output jack or RCA jacks to go into a home receiver and a car amp just as easily. All Rights Reserved. For that depending upon the output voltage requirement, regulator ICs are used. If you connect the fan to a voltage of 12V, it will draw automatically the correct current at steady state. Connect transformer output with diode, like diagram. The following images use the older 12V/5V power supply so the wires may be different depending on the manufacturer. There’s more than one way to power a car amp in your home. Just be aware that not all headphone or audio out jacks are created the same –  some work well and have good sound & volume while others can have low volume and “meh” sound quality. It can supply the horsepower (Wattage) for those projects that need a lot of current. It becomes difficult to manage volt drop and cable sizes become impractical as power becomes large. The hot side of the power supply is the part that connects to 110 volts AC. I can have it hook up to my all purpose battery charger and charge almost any battery. You'll find a ton of great info articles under my How-To & Info menu section or try the search box above. Did you make this project? The next important thing is to regulate the output voltage of the capacitors which will otherwise be varying as per the input voltage change. Cut the cable about 1-2 inches from the 4-pin ATX connector. For those of you who have, just use the images for reference. Fanstastic! Strip the insulation to leave about 3/8″ to 1/2″ bare wire. Standard 12v Plug. Neutral is the white one and hot is the black one. Now connect 1000uf capacitor positive wire connect with positive wire and negative side connect with ground wire. Then, use the jigsaw to connect all 4 holes so the inside of the plywood falls out. Perform these modifications at your own risk! Wiring a 24v power supply to 12v LED strips can be very dangerous. The back EMF will increase to say, 11.5V, and then if it has one ohm of internal winding resistance, it will draw 0.5 a. V=IR+E I= (V-E)/R= (12-11.5)/1 = 0.5A. 12v Plugs will power any of your plug in devices such as camera battery chargers, phones, drones, and in some cases: Refrigerators. ), A blank wall cover (Like a light switch cover, but no holes). Wiring 12v Plugs in a DIY Camper. Yes, it’s possible to use a PC computer power supply for powering a car amp. One of the best uses that I have for my power supply is running my ham radio setup. To secure it, drill a hole in the top of the desk into the the piece of plywood and add a wood screw in the hole with a drill. Since the ground connection can carry the noisy signal that gets amplified this often eliminates ground loop noise. Power connections: Cut the +12V wires (yellow) and the same number of ground (black) wires. They can only supply a few amps. I'm a car audio fanatic and degreed electrical engineer. The video below will compliment this instructable with a demonstration of this power supply in action. Remember to use very low gauge wire to prevent electrical fires! The most important part of any project is gathering the supplies you will need to make that project. That is the power converter that is used for this project. In my case, I measured the dimensions of the alcove of my desk to cut a square piece of plywood that would fit there. After you had built your power supply, test it with your multimeter to make sure they are no … Remember to use very low gauge wire to prevent electrical fires! In fact, nearly any analog (non-digital) jack can be used from almost any device. To wire this, first you will need to find a power cord. With the ignition switch in the off position, you should read approximately 12v on the multi-meter. connect a car subwoofer to your home stereo. It reveals the components of the circuit as simplified shapes, and also the power and signal connections in between the tools. Having this power supply is the equivalent of having a car battery on your desk that will never run out of charge. Unfortunately, despite car amps being designed to eliminate it, it can still happen. A wiring diagram is a simplified traditional pictorial depiction of an electrical circuit. Use one adapter for 120mm, another for 80mms, and so on. Supplying High Power AC Loads with Inverters. 12 volt replacement parts are readily available and they filter power spikes from getting to the camera. I have a CPU fan that I'd like to wire to a 12v PSU. Use wire nuts to connect different wires together. It also frees up the front terminals of my power supply for other things when my radio is in use. It is a better way if be a High power out of 5A to 30A according to the size of the transmitter. The cold side of your power supply is the twelve volt side. This will make sure that the face plate of your power supply will stay in place. If you do not have an alcove on your desk, you may just want to cut a whole wooden box. When the speaker signal is lost it will switch it off automatically. On the back of the Standard 12v Plug, there will be 2 pins that you’ll attach your wires … My ham radio needs 12 volts at a high current when transmitting, so directly connecting it to my power supply is really helpful. Replace the (usually) single diode with a diode bridge and optionally a pi filter. Adjustable AC/DC adapters should be used in a parallel wiring setup. When the amp’s remote wire is off (disconnected) the amp will shut off and it won’t drain power. I used a … Generators and high-powered inverters can supply 240V in addition to mains power. The good news that unlike in cars, speakers used in your home use less power for the same volume because vehicle interiors are poor for sound and require more power for good results. Alternatively, a ground loop isolator can often get rid of it. The second should work too, though check to see if it will fit under the bed (if that is your plan). In addition to this, I also connected two other wires going to the positive and negative rails of my power supply to go to my ham radio. Likewise, you’ll want to either turn the power supply on & off as I’ll show you or use the remote wire as a shut off in order to keep the amp from drawing power when not in use. If that happens you can try starting the supply and then wait before turning on the remote wire. One thing you might not count on running into is noise. even simpler is utilizing the biggest transformer type battery charger you can find. When the speaker level inputs detect a signal the remote wire output will produce +12V and turn on your amplifier. I was able to get my RV power converter practically for free. Don’t go just yet! The two wires that will produce voltage are green and purple. They’re really affordable (under $10 in some cases!) I'd love to help everyone find answers to their questions & enjoy good sound. You can connect these to unused speaker terminals on the receiver or amp as well as in parallel with home speakers already in use. Adding an extra 12 volt outlet really comes in handy when you want to plug in that charger and the other outlet is being used. After that, drill some pilot holes on the front of the face-plate to connect the light switch too. Once all the connections are done, press the button on the rocker switch to apply 12v that will facilitate extending motion of the actuator. Connected inline with the RCA cables, they work by physically disconnecting the RCA cable’s ground connection while still sending the audio signal. Your workbench, or desk, is the place that your power supply will be mounted at. This is important to know because the current limit of a power supply will limit how much power your car amp can produce. You will also need to add another screw to the opposing side of the plywood but on the bottom. An example line-level converter with remote wire output. Assortment of 12 volt relay wiring diagram. Smartphones, tablets, and laptops can be used either by their headphone jack or via Bluetooth. In other words power a 12V DC camera with a 12V DC power supply and power a 24V AC camera with a 24V AC power supply. Got an older home stereo? Injunction of 2 wires is usually indicated by black dot in the intersection of two lines. This power supply can be used for many different purposes. That’s because they contain large capacitors that, when first connected to power, momentarily draw a huge number of amps. You’ll need to connect these to 12V power and ground for the internal electronics to work.

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