Hi
I am making some lighting for a project, using LEDs. There are going to be two sources of light:
When connecting all 15 LEDs in series there is no problem. But, I would like to connect a Toggle Switch (ON-ON-ON) to give me three options.
a. Turn on all lights
b. Turn on only source 1
c. Turn on only source 2
Options (a-b) are no problem. Because they exceed the minimum load of the LED-driver. But option (c) does not.
To accommodate this I thought of placing a resistor in option (c), as shown in the circuit below. NB: I could not find the right switch, so only option (b-c) is illustrated. But it gets the point across.
I thought of using a 50W / 56 ohm Power Resistance. But I am not sure how to choose a resistance for a constant current circuit.
Any input will be appreciated!!
I am making some lighting for a project, using LEDs. There are going to be two sources of light:
- 13x 3W LEDs
- 2x 3W LEDs
When connecting all 15 LEDs in series there is no problem. But, I would like to connect a Toggle Switch (ON-ON-ON) to give me three options.
a. Turn on all lights
b. Turn on only source 1
c. Turn on only source 2
Options (a-b) are no problem. Because they exceed the minimum load of the LED-driver. But option (c) does not.
To accommodate this I thought of placing a resistor in option (c), as shown in the circuit below. NB: I could not find the right switch, so only option (b-c) is illustrated. But it gets the point across.
I thought of using a 50W / 56 ohm Power Resistance. But I am not sure how to choose a resistance for a constant current circuit.
Any input will be appreciated!!