Electronics Projects, Bright white LEDs with a single battery DC-DC converter article
"power electronic projects, " tagged with
the led with a single battery would be interested in a while. Find a suitable circuit and a couple of candle left to do puts, instead I thought we could take advantage of.
The place even over the land of both water PCB SMD SMD because let’s face it now it’s designed as something called Yi. It was a lot of work because the eyes are not the same. Use a lighted magnifying glass during the assembly is not possible if I couldn’t have finished. Two side PCB with adhesive tape fixed to the table while also unsolder Yi. Otherwise, you can’t stay hard and was constantly moving.
Led DC-DC converter circuit
Blocking oscillator that works on the type a circuit is defined as. Be cheaper and less space in the circuit so that the coil resistance was chosen over the type of land, but after around 10 seconds, the LED went out.
Then, 300mA current flow through the coil was measured and was passed. Unfortunately, resistance-type coils coil wasn’t cut out for this job and they embraced the diameter of the wire was very thin. I’ve put the ATX power sources (presumably -12V channel) 100uH coil worked without problems.
In the diagram 150uH said, but 100uH caused a problem. The circuit has a consumption 125mA total of 1.45 volts. 3.2 and 3.0 volts on the output the LED according to the condition of the battery, The voltage can be found. Able to burn even 1 volt with LED, but stay on the condition that fainter.
Instead of BC337 and BC327 BC807 SMD type(5CW) and BC817(6CW) was used. A parallel capacitor tantalum type is recommended to keep at that level range usually in these cases. Motherboard rip by chance on an old PC I made up 6.8 UF.
In the circuit, which is described as an LED 5730 LED Strip I put metal sticks in the market. It was quite a chore disassembled without damage. These LEDs 50 to 60mA current draw can around brightness, not too bad. You can experiment with different LED types as well. In this state, the circuit to power the LEDs is not good. We need to look for other solutions for the power LED.
One of them even has found a place for itself in an old flashlight. Than the inside diameter of the tube and only finished pharmaceutical to make it work like a battery LED Candle, it seemed to me appropriate. A modest study in to brighten the dark days for hours on a single battery. I think Silicon chip circuit diagram looks like the diagram belong to them.
The circuit of the PCB drawings: bright-white-leds-with-a-single-battery-dc-dc-converter.rar