Senior Member
Joined: 12/12/2011
Location: AustraliaPosts: 139
| Posted: 03:04pm 06 Jan 2012 |
I am running that 9 V 1.2 Amp power pack, through the voltage regulator..
I set the voltage regulator to 12 V
with 300 Ma current the voltage from the powerpack dropped to 10.8, and the output power is 9V( Load 14 leds, in led string, resistors inbuilt)
Unit has been running for half an hour, and the chip is not even hot...
At the same time I was doing this, I was using my MM, getting rid of line numbers in maxifont, and the MM got really hot...(used the other powerpack rated 9v 300 mA but outputting 13.1 V at little load. MM uses 150 mA when not doing much, I think...
Guess I know which way to go