I've just purchased some 12V LED MR-16 bulbs, intending to use them to replace the existing 12V Halogen MR-16 bulbs in my bathroom. I have found, much to my chagrin, that the LED bulbs seem to have different supply requirements.
What do I need to do in order to replace the halogen bulbs with the LED bulbs I've purchased?
The circuit to which the bulbs connect is 12V. Mains voltage is 240V here. To the best of my knowledge the LED bulbs are driver-less. Do I need to install a driver between each socket and the bulb, or does it just need to be somewhere on the 12V circuit? I do not have access to the 240V-12V transformer, even if I felt comfortable manipulating it.
I have tried the following configurations for the 4 sockets in my bathroom:
- 4 Halogen
- 2 Halogen, 2 LED
- 4 LED
- 1 LED
In each case the halogens act as would be expected: on when I switch the power on, off when I switch the power off.
When I switch on the power: The LEDs flash on, then go off and stay off.
When I switch off the power: LEDS stay off.