I designed this 940nm LED lamp for my NIR (near IR) photography projects /hobby.

The IR emiter consists of 7 3W-LEDS. 

For main power supply an 250W DC-DC Step-Up converter with CC and CV regulation is used. The other, smaller  DC-DC is for 5V cooler FAN supply. 

In the rear section you can find:

• power on/off switch
• simple voltage display
• DC jack for power in (12V)
• 3S battery connector