dethlore
0
- Joined
- Apr 4, 2011
- Messages
- 596
- Points
- 28
I have been trying to build a fairly elaborate circuit for the past month or so and kept running into an underpowered problem, so last night I did some actual testing with the bare essential components. Here's what I have:
Two 18650 in series (7.4V)
LM1185 regulator set to 7V and 700mA
Two Red Diodes rated for 700mA
Tests:
Powering just one diode(tried both separately), I get the 700mA no problem, with diode Vf of 2.7V
Powering dummy load for 6V, I get 700mA
Powering two diodes in series and I can only get 450mA out of each with a total Vf of 6V
Problem:
Obviously... these should be at 700mA, not 450. What in the world could cause this? I have done hours of research and I am stumped. I need help!
Thanks!
Two 18650 in series (7.4V)
LM1185 regulator set to 7V and 700mA
Two Red Diodes rated for 700mA
Tests:
Powering just one diode(tried both separately), I get the 700mA no problem, with diode Vf of 2.7V
Powering dummy load for 6V, I get 700mA
Powering two diodes in series and I can only get 450mA out of each with a total Vf of 6V
Problem:
Obviously... these should be at 700mA, not 450. What in the world could cause this? I have done hours of research and I am stumped. I need help!
Thanks!