Next Prev The wires on the main 20 pin or 24 pin connectors are color coded. These are the same for all ATX power supplies: The green wire is the “power on” sensor. This wire is internally connected to 5V with a pull-up resistor. If you connect this wire to ground any black wire the power supply will turn on. The gray “power good” indicator is at 5V if each of the output wires is operating at the correct voltages.
Chapter 1 – Introduction to Power Management in Portable Personal Devices
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I did not hook my battery up with the 16V charger as I felt the risk would be too much (its a pretty new battery will update if I try it though). With the 12V charger things worked fine. I did not find any heating in the adapter or the battery.
Charging with a Power Supply Learn how to charge a battery without a designated charger. Batteries can be charged manually with a power supply featuring user-adjustable voltage and current limiting. I stress manual because charging needs the know-how and can never be left unattended; charge termination is not automated. Because of difficulties in detecting full charge with nickel-based batteries, I recommend charging only lead and lithium-based batteries manually.
Lead Acid Before connecting the battery, calculate the charge voltage according to the number of cells in series, and then set the desired voltage and current limit. To charge a volt lead acid battery six cells to a voltage limit of 2. Select the charge current according to battery size.
Add2Psu: How to combine multiple power supplies in a single computer
Kool Kats Fly RC!! Originally Posted by abenn Even though you measured or it specifies How far it drops depends on the charger and on how many amps the load is. Your Multiplex may be more sensitive than your GWS so far as input voltage is concerned, or it may simply be taking more amps so that the car charger voltage is dropping further. I used to use a car charger connected to a smallish car battery as my 12v source for my plane charger.
In the North American market, Digitrax recommends the use of a dedicated PS power supply or equivalent for use TurntablesDCC has the ability to automatically reverse sections of track we call Reversing Sections while our trains are running and not affect the direction or speed of the trains. This is because we put a constant square wave AC current on the track and control the trains locos by sending messages to them actually to receivers we call decoders to tell them what to do such as start, stop, change directions, etc.
Most regular DC train control packs do not have enough power to supply the full power potential of the a 5 or 8 amp booster, since they were designed to only run 1 locomotive in a blocked system. Check with your local Digitrax dealer to see which transformers are available. The term smooth DC is used to describe the power provided to the layout by conventional model railroad power packs analog transformers.
What’s the best variable power supply?
If it exists it will be part of the double rowed plug that went to the motherboard of the PC. This should cause the fan to run consistently when the PS is turned on. If the fan is still not running you should look for the “PS-on” line and connect it to a “Common” line.
Sep 18, · You may want to purchase a power supply intended for such use; for examples, type “12 volt power supply” into e.g. Amazon’s search. As to wiring, it sounds like you’d just hook up the red and yellow lines to the +12 volt output of the power supply and the black to the – output.
Comments The other weekend, I sat down and sorted through all my random electronics junk. As part of that process, I took all my power supplies and adapters and threw them into a box. It ended up being a pretty big box. Having so many chargers can be pretty frustrating. And once that happens, it can be incredibly difficult to figure out which goes with which. The default solution to this is to try random plugs until you find one that fits into your device. However, this is a big gamble.
If you grab an incompatible power adapter, your best case scenario is that it works, albeit not the way the manufacturer intended. The second worst case scenario is that you fry the gadget you are trying to power up. The worst case scenario is that you burn down your house. The following will cause damage to your device: Reverse polarity Higher voltage adapter than device rating The following will cause harm to your power cord or adapter: Reverse polarity Lower current adapter than device rating The following might not cause damage, but the device will not work properly:
Chapter 1 – Introduction to Power Management in Portable Personal Devices
Ask Question Step 3: I decided to not cut up my PSU cables as i may need the computer it came from at some point, you will need to find the pins shown in the pic, they are on the connector that was originally on your motherboard, the cables should be green and black, any black ground connector will do the trick. Now a quick check, turn on your PSU and if the fan spins you’re all set for the next step.
Add Tip Step 4:
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Head Unit Has No Remote Wire A relatively common problem is installing an amplifier with a factory head unit or other head unit without a remote turn on wire or a burned out circuit. So the amplifier doesn’t stay on 24 hours a day you need a way to turn it on and off remotely. Hence the term “remote turn on wire”. Almost every aftermarket head unit has a remote turn on wire.
Some manufacturers call it a power antenna wire. But regardless of the label all it does is output a positive 12 volts when the head unit is turned on. It should be noted that some head units have both a remote turn on wire and a power antenna wire. It’s important to use the right wire for your amplifier and other electronic equipment. In the case of both remote and antenna wires the power antenna wire will only output 12 volts when the radio is on. If you were to connect your amplifier’s remote terminal to the power antenna wire then you would only get output from the amplifier with the radio.
When you switch to CD the amplifier would not work because the head unit turns off the power antenna wire when the radio is section is not active.
HeNe Laser Power Supply Design
The wall-outlet power pack supplied with most boxed racing sets is not sufficient for use on large table-mounted racing layouts. DC power supplies normally have two specifications, the output voltage and the output current. Modern HO slot car motors require at least 18 VDC, and 1 ampere or more of current for proper operation. Most of the DC power supplies currently being manufactured provide only 12 to They will however work properly for larger 1: A good quality DC power supply is essential to safe, trouble-free racing and prolonged motor life.
You might be able to hard-wire a variable DC power supply and adjust the voltage to match the battery. I don’t know how comfortable you are with electronics but this is the best I can come up with. Just use a multimeter to figure out the battery outputs and then you can solder some leads to hook a power supply up.
If you get no reading, wiggle, squeeze, squish, and otherwise abuse the cord both at the wall wart end and at the device end. You may be able to get it to make momentary contact and confirm that the adapter itself is functioning. The most common problem is one or both conductors breaking internally at one of the ends due to continuous bending and stretching.
Make sure the outlet is live – check with a lamp. Make sure any voltage selector switch is set to the correct position. Move it back and forth a couple of times to make sure the contacts are clean. If the voltage readings check out for now, then wiggle the cord as above in any case to make sure the internal wiring is intact – it may be intermittent. Although it is possible for the adapter to fail in peculiar ways, a satisfactory voltage test should indicate that the adapter is functioning correctly.
It’s also possible that the power jack on the device itself is damaged from use or abuse. With battery operated devices, there is usually a set of contacts that should close when the adapter is removed to connect the internal battery to the circuitry. If these don’t operate properly, the device may not work off batteries they may appear to not be charged , the AC adapter, or both. Check the jack for obvious signs of damage cracked, loose, etc.
A squirt of contact cleaner into the jack may clear up intermittent contact problems not due to actual damage. This handy low cost device can be built into an old ball point pen case or something similar to provide a convenient indication of wall adapter type, operation, and polarity:
The voltage and polarity of the power supply must match. Amps and watts have some flexibility. Both units are The short answer is that you may be able to use that watt power supply with your new machine, which came with a watt supply, if a couple of conditions are met. Become a Patron of Ask Leo!
You’re going to end up with a power supply with only one internal 12 volt rail. Your only real choice is whether to get current limited 12 volt rails. The bad news is that the marketing specifications for supposedly multi 12 volt rail power supplies don’t tell you whether the current limiters are real or not.
Speaker Connections for proper impedance match A note about amplifiers: You should always use the recommended load for your amplifier. However, if you must use a load other than the recommended load, here is a short guide. Most solid-state amplifiers would rather look at an open circuit no speaker at all than a load. Therefore, you can usually use a load that is higher than the recommended load. Do not use a lower impedance load, as this could cause serious damage to your SS amp.
On the other hand, most tube amplifiers need a load to avoid transformer or tube socket damage. If a mismatch can not be avoided on a tube amp, it is better to go towards a lower impedance rather than too high of a speaker impedance. This may stress the tubes some, but, tubes are cheaper than transformers. As the graphic shows, you connect the positive wire to speaker A’s positive terminal, connect a wire from speaker A’s negative terminal to speaker B’s positive wire, and then connect the negative wire to the negative terminal of speaker B.
You could continue this string for as many speakers that you have available, however, it may not be very practical. The impedances add in a series connection.