Yes, it may only use 1/2 AC cycle or each LED has two chips connected in
parallel but in reverse direction so it uses the whole AC cycle. Current
regulating device is usually required for LED and most likely an AC
capacitor (require full cycle AC operation), which can be small enough to
hide inside the plug.
C.H.Ling
----- Original Message -----
From: "Wayne Harridge" <wayneharridge@xxxxxxxxxxxxxxx>
>
>
>> Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx> wrote:
>>
>> These LEDs connect directly to the 120v supply. There is no visible
>> converter. The plugs are even normal size for an incandescent string of
>>
>> lights so I don't think there's anything hiding in there except a fuse.
>> They look exactly like a normal string of small incandescent bulbs
>> except that they're LEDs. The bulbs also pop in and out of sockets like
>>
>> they would if they were small incandescent bulbs. Bulbs are stated to
>> be 2 volts and 0.04 watts. A box of them consists of either 2 strings
>> of 90 bulbs or 3 strings of 60 bulbs for 180 bulbs drawing only 7.2
>> watts.
>>
>
> So they probably only draw current on 1/2 of the AC cycle - shouldn't
> present a problem for a 7W load.
>
> ...Wayne
>
> Wayne Harridge
>
> http://lrh.structuregraphs.com
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