Re: 9W LED inrush current

On 02/10/2024 13:03, Pimpom wrote:

On 02-10-2024 03:21 pm, Jan Panteltje wrote:

On a sunny day (Wed, 2 Oct 2024 12:01:47 +0530) it happened Pimpom
<Pimpom@invalid.invalid> wrote in <mN5LO.101241$CStb.23546@fx12.ams1>:
>

Does anyone have a figure for the switch-on inrush current of a typical
9W LED bulb? Preferably for 230/240V.

>
Not sure wat the 'typical' circuit is, this is wha tI found in my LED bulbs from Cina:
  https://panteltje.nl/pub/LED_light_circuit_diagram_IMG_6925.JPG
   peak current is limited by the 1uF series cap at 50 Hz here.
There are so many different LEDs around,...
>

Ah, I should have formed my question more carefully. I know about those early bulbs. They were the precursors to modern ones that use switching supplies. These later models are the ones I mean.

It is still likely to be fairly small since the cheap parts they use are not capable of more. Only way to be sure for a specific brand is to measure it. I'd expect no more than 2-3x its nominal operating current. The reservoir capacitor is seldom bigger than needed to avoid visible flicker and sometimes not even that on the cheap and nasties.
Why do you need to know?
--
Martin Brown