Question about Motorola HT1000, MTS2000, MTX8000/9000 Compatible 2 Way Radio Battery Eliminator

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What is the dc input voltage for a 7.5V NTN1171A charger for a MTX838?

I have a MTX838 radio but need to replace the transformer for the charger. I am not sure if the input voltage is 9 or 12 volts dc

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  • Motorola Master
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The book list the wall adapter to charger NTN1171 as being part number 2580162R01. The description says 13.8VDC 1.5A AC ADAPTER. When googling the part number, it appears someone is selling one on eBay for around $29.99. Retail from Motorola appears to be $125.

Posted on Sep 30, 2008

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I need to replace the transformer inside my 12 volt charger. I can not find who makes the ES -66-287rev5 transformer. Need help.


If you have the skill to determine the transformer input is open, I would expect you have the skill to replace a transformer. Based on this assumption: determine the input voltage (120 vac?), determine the output voltage (14 vac?), determine the power requirements (output voltage times the charging current), find a transformer at www.digikey.com or www.mouser.com or www.newark.com.

Sep 15, 2014 | Drills

1 Answer

What voltage DC charger does a Midland LXT326 use?


How many batteries connected in series at the battery pack there is?each one is 1.2 Volts, just add each one and add 10% Voltage.The final voltage is it

Jul 09, 2014 | Midland Radio Communications

1 Answer

Sony cfd-s01 boombox radio


Hi Bart,
You will find there is a specification plate on the rear of the unit.
It should have a rating on it showing the wattage of the unit. This is usually the amount needed to operate all the functions of the boombox.
The wattage is your input voltage multiplied by the current draw in amps. So the amperage is the rated wattage of the unit divided by the input voltage.
Usually all power goes through the transformer, so I would use this input amperage as a guide, and assuming there is no power loss, use the same calculation for the output - you know it is 9 volts, so the wattage going to the unit is the same as the input wattage, so you can calculate the amperage from this.
Transformers usually work on AC input/output, so there will also be a rectifier to convert the AC to DC for your boombox.
I would add 10 - 20% above your calculation to make sure you have sufficient power. Also I suggest that you install a fuse between your transformer and the boombox for safety.

Feb 02, 2014 | Audio Players & Recorders

1 Answer

WHAT ARE TRANSFORMERS


Wall socket power (high voltage) is known as AC (Alternating Current). Battery power (low voltage) is known as DC (Direct Current). Transformers are electrical converters that change AC input to DC output or DC input to AC output. This is required to charge or to supply mains power for most portable devices that use batteries when not plugged in, or devices that do not have batteries but still require DC power input. Examples of such devices are laptops, phones, tablets, printers, print servers etc. A transformer for your print server is most likely a black box in line with the power cable. In this case you will need a new power cable which will include the transformer. Some transformers are within the device itself with a power socket in the back of the device. If this is the case then replacement of the transformer (or sometimes the whole device) is required depending on the price of parts, sometimes replacing the whole device is cheaper.

Jan 15, 2014 | Lexmark N5 (12J0020) Print Server

1 Answer

My vector vec157 will not charge on 120 volt. It works on 12 volt


If you light is charging when you use the 12v automotive charger but not when you use your AC power transformer, my thought is that you might have a problem with your AC charger, not with the light itself. I have AC/DC transformers from the 1970s that still work fine, but I have had numerous modern AC/DC transformers burn out on me in recent years.

One easy test is to use a multimeter to measure the output voltage of your wall charger. Place one test lead on each of the charging terminals (i.e., one inside the barrel and one outside the barrel, if you have a standard coaxial charging port) and check the DC reading. If it's zero--or anything less than 12 volts, actually--the charger isn't working correctly. The problem may be a torn or cut wire or something actually inside the transformer.

Replacement chargers can be found at Radio Shack and other stores. You may also be able to score a cheap replacement at a "dollar plus" store or even at a second-hand shop. Make sure that the terminal polarity is correct on your replacement charger or else you'll fry the batteries in your light.

Good luck!

Sep 08, 2011 | Vector 20 Million Power Series Spotlight

4 Answers

Charger broke


common problem, go here
http://mrclm.blogspot.com/2009/09/black-decker-18v-firestorm-drill.html

May 14, 2010 | Black & Decker 18V Cordless Drill/Driver

2 Answers

Powa Force drill charger is dead


Powaforce battery charger.

  1. Measure the dc output (with multimeter) on female plug. Should read ±16 – 20V DC. If no voltage here open charger and measure 220v AC on input wire before transformer. No voltage faulty input cable or 3pin plug. If ok check for dc voltage after transformer. If transformer faulty (not worth repairing) replace with same dc volts and amp (important)output. Check now output cable.
  2. If voltage is on cable but base does not light up, probable faulty capacitor. If light is on but does not charge, probable rectifier that gives too little amps.
  3. Any good tv repair technician can help you. My tv tech already fix about 9 of my torch and drill chargers. Parts usually about R5 – R10.
ps. email me the specs of your charger the input, output, the current (MA) and the voltage 14.v or 21v to globalsat1@gmail.com

Dec 04, 2009 | Drills

1 Answer

Transformer has failed in my Trutech M#KLV3112


The transformer should have the input and output rating labeled on the unit itself. Such as input 110vac, output ...... dc.

Jan 14, 2009 | Televison & Video

1 Answer

No Power


You should measure AC voltage from the output of the transformer to the bridge rectifier, and after the rectifier you should see a DC voltage (you may also read some "ripple" AC voltage on the DC side as well). Check across each battery to see how many volts DC they are receiving (as they will all be in series connection ie one after the other). Batteries are the usual problem with faulty UPS's. You may have a problem battery or multiple problem batteries and they may need replacing.

May 06, 2008 | Powerware 9120 UPS System

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