Is LED light inductive or resistive load

author
Is a 230V / 7W LED funzel an inductive or ne ohmic load?
Search for: led (30954)

    










BID = 924165


Veteran



Posts: 12736
Residence: Valley of the Unsuspecting


Hello dear colleagues.

Maybe that's a stupid question, but I don't have much combat experience with this newfangled mulled fruit set ...
I want to "control" a few of the things (230V / 7W / E27) using an optocoupler and a triac.
Now the data sheet specifies a different (additional) circuit for inductive things.
What do you see these things as in terms of circuitry?
Is there a switching power supply in it, a capacitor power supply or in the end just a creep and a diode?
Or does the triac really care about the few mA anyway?
Thanks!

_________________
Some men spend a lifetime striving to understand the nature of a woman. Others deal with less difficult things such as relativity.
(Albert Einstein)

BID = 924168


Veteran



Posts: 17105


Neither ohmic load nor inductive load. There is an identical smell in the things and an IC
The part works as a switching power supply. Counter-voltage as with inductive loads is less to be expected.

_________________
Typos cannot be exchanged.
Work on distributors belongs in competent hands!
Always be aware that the life and health of others depend on your work!








BID = 924178


Honorary member



Contributions: 11110.1
Place of residence: Rheinbach


Quote :
Or does the triac really care about the few mA anyway?
Doesn't matter.
It is quite possible that the low current load is not sufficient for the holding current of the triac and that it goes out again immediately after the ignition pulse.

There are also different concepts for operating the LEDs.
Our living room lamp has 14 firmly soldered 1W LEDs which are simply connected in parallel as 2 groups of 7 each connected in series and then supplied by a 350mA constant current switching power supply.

There are 6 2W-230V lamps in the hallway lamp, each of which consists of 96 small SMD LEDs and 2 capacitors connected upstream.
I assume that this in particular has only a small current conduction angle and would be difficult to dim.

[This message was modified by: perl on Apr 21, 2014 14:07]

BID = 924195


Veteran



Posts: 12736
Residence: Valley of the Unsuspecting


Quote :
perl wrote on Apr 21, 2014 14:05:

It is quite possible that the low current load is not sufficient for the holding current of the triac and that it goes out again immediately after the ignition pulse.

It's good that you raised the objection.
I just tried it out.
It works, but only if you go with the LED current in the optocoupler to just about the puke limit.
At the "typical" value according to the data sheet, the funzel flickers and buzzes.

_________________
Some men spend a lifetime striving to understand the nature of a woman. Others deal with less difficult things, e.g. the theory of relativity.
(Albert Einstein)