Micro Dc Converter | Electronic Project Circuits

Posts Tagged ‘micro dc converter’

Micro DC Converter 3V to 9V using TL496

This be Micro DC Converter circuit. It perform modify from battery 3V or AA cell 1.5V x 2 be dc voltage 9Volt sizes. By this circuit s use electronic part a little 4 only just. By have IC TL496. It perform be switching edit the circuit for the energy collects to enter still the coil pulls to lead already lead electric upland energy go up this go to can control the pressure about 9V by have pick to load perform filter voltage smoothly, fully be usable next. See the detail adds in the circuit.

Be the first to comment - What do you think? Posted by admin - July 11, 2009 at 8:32 am

Categories: DC converter Tags: 3V to 9V dc converter, dc converter step up, micro dc converter

1.2V Drive 7 High efficiency white LED flashlight

High efficiency white LEDs have advanced to the point where they can replace glow bulbs and other light sources not only as indicators, but also for illumination. While many of the claims made about the LEDs’ efficiency, light quality, lifetime and economy are mostly exaggeration, the truth is that for very low light levels they are now competitive. They have equal or slightly higher efficiency than a flashlight bulb, a longer lifetime, and are very much tougher. On the other hand, they are still far more expensive than a bulb, for a given light output.

The circuit is a self-oscillating boost converter, and I certainly cannot claim having invented it. It is ages old! I only did the detail design of this one, and optimized it in the course of one afternoon. It runs with a beautifully clean waveform, with all components except the LEDs staying completely cold to the touch. At this low power level, even that doesn’t guarantee a good efficiency, but I measured it at about 72%, which is quite good for a circuit operating from such a low voltage!

Source :http://ludens.cl/Electron/ledlamp/ledlamp.html
Thank you.

Be the first to comment - What do you think? Posted by admin - February 7, 2008 at 11:59 pm

Categories: DC converter, LED Flasher, Lighting Tags: high power led display, LED energy saving, led flashlights, micro dc converter

5V to 12V DC DC Step-Up Converter by LT1073-12

In order to step up the voltage output from four rechargeable AA batteries from around 5 Volts to the required 12 Volts the following circuit is used.

The key component is the LT1073-12 DC/DC Converter Chip from Linear Technology. Click here for the comprehensive LT1073 Specification Sheet which includes many example circuits using this chip.
This £2 device (the 5V output version LT1073-5 is pictured above) requires just a few off-the-shelf components and operates with supply voltages from 1V to 30V.

The only additional components required to use an LT1073-12 as a 5V-12V DC/DC converter are a 150uH inductor, two 100uF capacitors,and a 50 Ohm Resistor. Total cost of these components is around £1.

Source:http://www.reuk.co.uk/Power-12V-LED-Spotlight-with-4-AA-Batteries.htm
Thank you.