Anyone know what this is?

[miketx]

Something was rattling around inside my Black and Decker spotlight so I took it apart and found this rolling around in it. The light still works but when you charge it up the charge indicator light never turns from red to green. It must have something to do with that.

 

[Oddball]

Looks like an electrical component.

 

[Camp]

It's a wutchamacallit thingamajig.

 

[TroglocratsRdumb]

It's a coil.
It's probably for the charger power supply.

 

[ZZ PUPPS]

Go online and see if you can find a parts manual for the spotlight. It looks like a "connection" on the bottom right.

 

[JGalt]

It's a coil.
It's probably for the charger power supply.

You beat me to it. It's a magnetic induction coil or toroidal inductor. this is a great find! They're worth about 39 cents apiece.

US $1.55 5% OFF|10pcs/lot Naked 22UH 3A Magnetic Induction Coil Toroidal inductor Winding Inductance For LM2596 High Quality-in Inductors from Home Improvement on Aliexpress.com | Alibaba Group

Like you said, they're commonly used in the filtering stage of switching power supplies. Just solder it back where it went, and he'll be good to go.

 

[Rambunctious]

I've had one rolling around in my glove box for two years.....

 

[JGalt]

I've had one rolling around in my glove box for two years.....

I took all mine out of every piece of equipment I had. They're great for throwing at squirrels.

But then nothing worked any more.

 

[flacaltenn]

Something was rattling around inside my Black and Decker spotlight so I took it apart and found this rolling around in it. The light still works but when you charge it up the charge indicator light never turns from red to green. It must have something to do with that.

View attachment 244855

It's a simple way of measuring current to/from the battery.. A battery connection is passed thru the center of the coil... Without it, the battery life could be harmed or worse -- destroyed.

Confidence level == about 90%...

 

[Moonglow]

Next time buy a Dewalt brand it's tougher..

 

[JGalt]

Something was rattling around inside my Black and Decker spotlight so I took it apart and found this rolling around in it. The light still works but when you charge it up the charge indicator light never turns from red to green. It must have something to do with that.

View attachment 244855

It's a simple way of measuring current to/from the battery.. A battery connection is passed thru the center of the coil... Without it, the battery life could be harmed or worse -- destroyed.

Confidence level == about 90%...

Been a long time since I was in the industry, but I think I see two leads on that. An induction transformer would have two sets of windings, one for the current to pass through, the other connected to the measuring circuit. The one he pictured is an inductor coil that may be for filtering certain frequency ripples out of a DC source.

But my confidence level is shaky on this.

 

[miketx]

Something was rattling around inside my Black and Decker spotlight so I took it apart and found this rolling around in it. The light still works but when you charge it up the charge indicator light never turns from red to green. It must have something to do with that.

View attachment 244855

It's a simple way of measuring current to/from the battery.. A battery connection is passed thru the center of the coil... Without it, the battery life could be harmed or worse -- destroyed.

Confidence level == about 90%...

Thanks, I figured it had to do with monitoring the battery charge level. I wont worry about it because during the 3 years I've had it, the light has never needed to be on the charger more that 30 minutes or so to charge. It's got one 18650 battery and if it goes out it is easy to change.

 

[flacaltenn]

Something was rattling around inside my Black and Decker spotlight so I took it apart and found this rolling around in it. The light still works but when you charge it up the charge indicator light never turns from red to green. It must have something to do with that.

View attachment 244855

It's a simple way of measuring current to/from the battery.. A battery connection is passed thru the center of the coil... Without it, the battery life could be harmed or worse -- destroyed.

Confidence level == about 90%...

Been a long time since I was in the industry, but I think I see two leads on that. An induction transformer would have two sets of windings, one for the current to pass through, the other connected to the measuring circuit. The one he pictured is an inductor coil that may be for filtering certain frequency ripples out of a DC source.

But my confidence level is shaky on this.

In a lot of applications, it suffices to just run the wire carrying the current thru the center. No additional winding required. Much like the commercial "clamp-on" current meters.



OR -- it could be a filter component. But if it is -- it's only to prevent regulator/switching noise from going to the mains thru the wall power supply.. But FCC interference filtering is largely met in the wall supply itself..

 

[JGalt]

Something was rattling around inside my Black and Decker spotlight so I took it apart and found this rolling around in it. The light still works but when you charge it up the charge indicator light never turns from red to green. It must have something to do with that.

View attachment 244855

It's a simple way of measuring current to/from the battery.. A battery connection is passed thru the center of the coil... Without it, the battery life could be harmed or worse -- destroyed.

Confidence level == about 90%...

Been a long time since I was in the industry, but I think I see two leads on that. An induction transformer would have two sets of windings, one for the current to pass through, the other connected to the measuring circuit. The one he pictured is an inductor coil that may be for filtering certain frequency ripples out of a DC source.

But my confidence level is shaky on this.

In a lot of applications, it suffices to just run the wire carrying the current thru the center. No additional winding required. Much like the commercial "clamp-on" current meters.



OR -- it could be a filter component. But if it is -- it's only to prevent regulator/switching noise from going to the mains thru the wall power supply.. But FCC interference filtering is largely met in the wall supply itself..

Thank you. I spent 15 years peering through a magnifying glass on a bench reading schematics, chasing electrons, unsoldering and replacing compnents. Haven't done that since 1998 though, hardly anyone repairs anything these days.

 

[flacaltenn]

Something was rattling around inside my Black and Decker spotlight so I took it apart and found this rolling around in it. The light still works but when you charge it up the charge indicator light never turns from red to green. It must have something to do with that.

View attachment 244855

It's a simple way of measuring current to/from the battery.. A battery connection is passed thru the center of the coil... Without it, the battery life could be harmed or worse -- destroyed.

Confidence level == about 90%...

Been a long time since I was in the industry, but I think I see two leads on that. An induction transformer would have two sets of windings, one for the current to pass through, the other connected to the measuring circuit. The one he pictured is an inductor coil that may be for filtering certain frequency ripples out of a DC source.

But my confidence level is shaky on this.

In a lot of applications, it suffices to just run the wire carrying the current thru the center. No additional winding required. Much like the commercial "clamp-on" current meters.



OR -- it could be a filter component. But if it is -- it's only to prevent regulator/switching noise from going to the mains thru the wall power supply.. But FCC interference filtering is largely met in the wall supply itself..

Thank you. I spent 15 years peering through a magnifying glass on a bench reading schematics, chasing electrons, unsoldering and replacing compnents. Haven't done that since 1998 though, hardly anyone repairs anything these days.

Hardly anyone DESIGNS anything any more. I find less and less evidence of companies CARING about a product working 100% correctly 100% of the time. Folks have become conditioned to accept obsolescence and sketchy performance. You got out the HEIGHT of pride and quality in products.

Can't remember the last thing I bought that did not disappoint me.

 

[JGalt]

Something was rattling around inside my Black and Decker spotlight so I took it apart and found this rolling around in it. The light still works but when you charge it up the charge indicator light never turns from red to green. It must have something to do with that.

View attachment 244855

It's a simple way of measuring current to/from the battery.. A battery connection is passed thru the center of the coil... Without it, the battery life could be harmed or worse -- destroyed.

Confidence level == about 90%...

Been a long time since I was in the industry, but I think I see two leads on that. An induction transformer would have two sets of windings, one for the current to pass through, the other connected to the measuring circuit. The one he pictured is an inductor coil that may be for filtering certain frequency ripples out of a DC source.

But my confidence level is shaky on this.

In a lot of applications, it suffices to just run the wire carrying the current thru the center. No additional winding required. Much like the commercial "clamp-on" current meters.



OR -- it could be a filter component. But if it is -- it's only to prevent regulator/switching noise from going to the mains thru the wall power supply.. But FCC interference filtering is largely met in the wall supply itself..

Thank you. I spent 15 years peering through a magnifying glass on a bench reading schematics, chasing electrons, unsoldering and replacing compnents. Haven't done that since 1998 though, hardly anyone repairs anything these days.

Hardly anyone DESIGNS anything any more. I find less and less evidence of companies CARING about a product working 100% correctly 100% of the time. Folks have become conditioned to accept obsolescence and sketchy performance. You got out the HEIGHT of pride and quality in products.

Can't remember the last thing I bought that did not disappoint me.

"Planned obsolescence". That's one of the extra features most engineers design into a product.

 

[miketx]

Something was rattling around inside my Black and Decker spotlight so I took it apart and found this rolling around in it. The light still works but when you charge it up the charge indicator light never turns from red to green. It must have something to do with that.

View attachment 244855

It's a simple way of measuring current to/from the battery.. A battery connection is passed thru the center of the coil... Without it, the battery life could be harmed or worse -- destroyed.

Confidence level == about 90%...

Been a long time since I was in the industry, but I think I see two leads on that. An induction transformer would have two sets of windings, one for the current to pass through, the other connected to the measuring circuit. The one he pictured is an inductor coil that may be for filtering certain frequency ripples out of a DC source.

But my confidence level is shaky on this.

In a lot of applications, it suffices to just run the wire carrying the current thru the center. No additional winding required. Much like the commercial "clamp-on" current meters.



OR -- it could be a filter component. But if it is -- it's only to prevent regulator/switching noise from going to the mains thru the wall power supply.. But FCC interference filtering is largely met in the wall supply itself..

Thank you. I spent 15 years peering through a magnifying glass on a bench reading schematics, chasing electrons, unsoldering and replacing compnents. Haven't done that since 1998 though, hardly anyone repairs anything these days.

Hardly anyone DESIGNS anything any more. I find less and less evidence of companies CARING about a product working 100% correctly 100% of the time. Folks have become conditioned to accept obsolescence and sketchy performance. You got out the HEIGHT of pride and quality in products.

Can't remember the last thing I bought that did not disappoint me.

I changed the coolant temp sensor on my wife's Trailblazer, and, it is a BITCH to change! Lasted two months, now I gotta do it again. On a cold morning (30f) it had been sitting all night and the scan tool showed the coolant temp at 278 degrees. It won't run right because the computer tries to lean out the fuel air mixture and makes it real hard to start. Junk Chinese crap!

 

[Moonglow]

It's a simple way of measuring current to/from the battery.. A battery connection is passed thru the center of the coil... Without it, the battery life could be harmed or worse -- destroyed.

Confidence level == about 90%...

Been a long time since I was in the industry, but I think I see two leads on that. An induction transformer would have two sets of windings, one for the current to pass through, the other connected to the measuring circuit. The one he pictured is an inductor coil that may be for filtering certain frequency ripples out of a DC source.

But my confidence level is shaky on this.

In a lot of applications, it suffices to just run the wire carrying the current thru the center. No additional winding required. Much like the commercial "clamp-on" current meters.



OR -- it could be a filter component. But if it is -- it's only to prevent regulator/switching noise from going to the mains thru the wall power supply.. But FCC interference filtering is largely met in the wall supply itself..

Thank you. I spent 15 years peering through a magnifying glass on a bench reading schematics, chasing electrons, unsoldering and replacing compnents. Haven't done that since 1998 though, hardly anyone repairs anything these days.

Hardly anyone DESIGNS anything any more. I find less and less evidence of companies CARING about a product working 100% correctly 100% of the time. Folks have become conditioned to accept obsolescence and sketchy performance. You got out the HEIGHT of pride and quality in products.

Can't remember the last thing I bought that did not disappoint me.

I changed the coolant temp sensor on my wife's Trailblazer, and, it is a BITCH to change! Lasted two months, now I gotta do it again. On a cold morning (30f) it had been sitting all night and the scan tool showed the coolant temp at 278 degrees. It won't run right because the computer tries to lean out the fuel air mixture and makes it real hard to start. Junk Chinese crap!

One reason I prefer to buy nineteen ninety model trucks..

 

[Moonglow]

Something was rattling around inside my Black and Decker spotlight so I took it apart and found this rolling around in it. The light still works but when you charge it up the charge indicator light never turns from red to green. It must have something to do with that.

View attachment 244855

It's a simple way of measuring current to/from the battery.. A battery connection is passed thru the center of the coil... Without it, the battery life could be harmed or worse -- destroyed.

Confidence level == about 90%...

Been a long time since I was in the industry, but I think I see two leads on that. An induction transformer would have two sets of windings, one for the current to pass through, the other connected to the measuring circuit. The one he pictured is an inductor coil that may be for filtering certain frequency ripples out of a DC source.

But my confidence level is shaky on this.

In a lot of applications, it suffices to just run the wire carrying the current thru the center. No additional winding required. Much like the commercial "clamp-on" current meters.



OR -- it could be a filter component. But if it is -- it's only to prevent regulator/switching noise from going to the mains thru the wall power supply.. But FCC interference filtering is largely met in the wall supply itself..

Thank you. I spent 15 years peering through a magnifying glass on a bench reading schematics, chasing electrons, unsoldering and replacing compnents. Haven't done that since 1998 though, hardly anyone repairs anything these days.

1982-1991 for me..

 

[Missourian]

One reason I prefer to buy nineteen ninety model trucks..

They are getting harder and harder to find.