Recent content by BernyZa89

At first we wanted to power the diode and be able to vary the current to vary the output power of the laser, but at this point we want to just be able to take the original input DC supply (Lithium-ion batteries 3.7V Nominal) and be able to power the diode at a constant current of 290.122 which...

Maybe is ignorance in the subject but we are not using WiFi for our device. The microcontroller will read the values directly from the sensors to be displayed on the LCD.

The project takes two 3.7 Nominal Voltage lithium-ion rechargeable batteries in parallel (4.2 charging voltage cut-off and 2.5 discharging voltage cut-off) and will need to regulate the voltage to three different voltages which are 12V, 5V, and 3.3V. What will be the best set up? I was thinking...

The battery is supplying a 3.7 Nominal voltage (4.2 charging voltage cut-off and 2.5 discharging voltage cut-off), VCC is 3V and Active Mode Supply Current Into VCC Excluding External Current at 16MHz and 0 % cache hit ratio is 2.675 mA (basically the highest current given in the specs). I don't...

Ok understood. Well I can give you a more direct answer on that once I talk to the optics engineering student. Sorry to ask you another question. So basically the microcontroller will read the values from a photodiode and 1-D array sensor to obtain the wavelength and power and LCD will display...

Definitively I will do that. I also understand you can't do all the work, but I appreciate all the help that you can give me specially since we're behind in this project due to the lack of parts (You know problems with delivery from China) and another partner having trouble understanding a 1-D...

Yes I have to prototype it and would love the help thank you. Since my partner changed the laser diode (Pump source) to a different laser pointer. As soon as I get the numbers necessary for the new component I could sent you the new specs for it.

Also we do want a continuous wave beam.

Our design project idea is to create a dye laser with a self-contained laser cavity that can be swapped out. The end goal of this project is to create a UV-emitting laser device that is easy to operate and can be used effectively for UV absorption testing of sunscreen.

Thanks yes I liked the This Old House speech :biggrin:. On the side I am fine because the optics engineering student has taken all the courses necessary for safety and the laser will be operated in a safe environment. Someone suggested to do this: There are LED driver IC that will operate in the...

Thank you for your answer! No I am not familiar with designing current sink circuits based on low-side NPN transistors... To tell you the truth this is my first design project in school. Any input or additional info in this subject will be greatly appreciated.

Hello! I am a student working on a portable laser project. The laser is going to be powered by two lithium-ion batteries at 3.4A capacity and 3.7 Nominal voltage (4.2 charging voltage cut-off and 2.5 discharging voltage cut-off). I'm using voltage regulators to step up or step down voltages for...

I am currently an electrical engineering student at UCF with a track in power and renewable energy track.