I have built some LED lights for my fish tank using six of these LED lamps:
I have tried using this power supply:
When I connected the original six white LED lamps they flashed to indicate the 12v 60w driver was being overloaded. I changed it to four LED's two on each string so the circuit was well within the drivers current parameters; however They still flashed, at this point I took a voltage measurement of between 7 and 8 volts when the lights flashed. It did however work with only two LED's connected.
The driver seems to have a fixed voltage at 12v and from what I have read I need a new driver one that compensates for the drop in voltage.
I asked the person from who I bought the LED lamps what the power requirements if the chip were and he said it would be 12v per chip so around 66V? This left me a little confused because the 12v driver worked with two chips.
Is this the correct way to calculate the voltage of the driver required? Please note I found another source for these chips who states the reserve voltage if 5v; however I believe this may be a typo from the Chinese chap and he probably meant reverse voltage. Also; constant current driver so no resistor suggestions please.