Gazoo
0
- Joined
- Jun 9, 2007
- Messages
- 3,206
- Points
- 38
So you are going to use a 7805 and regulate the voltage and run it with 4.5 volts? Please explain how that's going to work when the same holds true with the 7805, as with the 317 as far as running into problems with the regulator dropping out. You would need to use the same configuration as has been suggested to you. And using a voltage regulator you are asking for trouble. What happens is as the diode heats up it draws more current if using a voltage regulator. What do you think will happen? Is thermal runaway a possibility? I don't know and I am not about to find out. Irregardless, by using a current regulator the current going to the diode remains constant, no matter how cold or hot the diode is.