Re: [EE]: a curiosity - RCA -> Miniature Light Globe pendant?

Very interesting!

Thanks for posting your find Justin.


On 28/01/2026 12:54 pm, Justin Richards wrote:
> i liked the "leak light detection" suggestion and could do double duty as
> that.
>
> I posted some images on EEVBLOG which resulted in
>
> "A Numark “turntable target light” is a small cueing lamp used on certain
> Numark DJ turntables to illuminate the record surface right where the
> stylus lands, so you can see grooves and cue accurately in low-light DJ
> environments"
>
> And an image search for "Numark turntable target light" finds exact matches.
>
> e.g.
> https://www.musicstore.com/en_OT/EUR/Numark-Target-Light-for-TTX-1-/art-DJE0001644-000
>
> A search for the power requirements gave mixed results. Some say 12v others
> 3.3V
>
> justin.
>
>
>
> On Tue, Jan 27, 2026 at 3:26 AM Harold Hallikainen <[email protected]>
> wrote:
>
>>
>> On Mon, January 26, 2026 2:53 am, smplx wrote:
>>
>>> In the past I've found you can tell grok that this is not correct and to
>>> try again. You can tell it why you think its answer is wrong and it will
>>> refine its search. After a few trys it seems to find what you are looking
>>> for.
>>>
>>> Friendly Regards
>>> Sergio
>> I recently had a conversation with Google AI on determining the inductance
>> of an air core coil with shorted turns. It showed me all the calculations
>> but just assumed the coil was shorter and had fewer turns. I replied that
>> it looks like you ignored the mutual inductance to the shorted turns. It
>> replied "Sharp eye" and provided the corrected calculations.
>>
>> Harold
>> https://w6iwi.org
>>
>>
>> --
>> Not sent from an iPhone.
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