- Joined
- Jun 30, 2013
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- 10
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Hey guys. I have made a DDL, i'll attach the picture further down.
The problem I am having is, for starters, the lasers are either very weak, or don't work at all.
The laser I purchased: LASER
I know I have the circuit done correctly because I had to etch 4 times to get it right. Sometimes i'm too impatient.
I hooked up 4 diodes and a 1 Ohm resistor. The voltage accross the resistor was good (260mv with 5Ohms, 370mv with 3.33 ohms)
The first sign of trouble is that the reference voltage (between Vout and Vadj) is 0...
The second, well, the lasers are all burning up. Note that I am running the diodes for less than a second. Just lightly tapping the positive terminal with the appropriate wire.
The circuit lights up a regular LED... albeit with a LOT of heat...
I forgot to mention that I AM shorting the pins where the potentiometer should go...
The problem I am having is, for starters, the lasers are either very weak, or don't work at all.
The laser I purchased: LASER
I know I have the circuit done correctly because I had to etch 4 times to get it right. Sometimes i'm too impatient.
I hooked up 4 diodes and a 1 Ohm resistor. The voltage accross the resistor was good (260mv with 5Ohms, 370mv with 3.33 ohms)
The first sign of trouble is that the reference voltage (between Vout and Vadj) is 0...
The second, well, the lasers are all burning up. Note that I am running the diodes for less than a second. Just lightly tapping the positive terminal with the appropriate wire.
The circuit lights up a regular LED... albeit with a LOT of heat...
I forgot to mention that I AM shorting the pins where the potentiometer should go...
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