Battery-charging considerations for low-power applications [PDF]
https://www.electronics-lab.com/battery-charging-considerations-low-power-applications/
By Tahar Allag: The wearable and personal-electronics industries are booming. Devices in this market vary wildly by application and use. These multifunction devices are designed to help people in their daily activities and make their lives comfortable. They can be found in different shapes, colors, sizes, and safety measures. They may differ significantly from each […]
Half Bridge Driver based on IR2104
https://www.electronics-lab.com/half-bridge-driver-based-ir2104/
This Half-bridge driver based on IR2104 gate driver IC and N channel Dpak MOSFET , The IR2104 is a high voltage, high speed power MOSFET driver with independent high and low side referenced output channels. HVIC and latch immune CMOS technologies enable ruggedized monolithic construction. The logic input is compatible with standard COMOS or LSTTL […]
How-to use PWM to Generate Analog Voltage in Digital Circuits
https://www.electronics-lab.com/use-pwm-generate-analog-voltage-digital-circuits/
Maurizio @ emcelettronica.com tipped us with his latest article on how to generate analog voltages using a microcontroller. Many times, designers are faced with the need of generating analogue or analog voltage levels in purely digital circuits. Although the market provides today a very broad range of dedicated digital-to-analogue converters, putting such a device in the […]
AC PWM dimmer for Arduino
https://www.electronics-lab.com/ac-pwm-dimmer-for-arduino/
diy_bloke @ instructables.com has designed an AC PWM dimmer for Arduino: Over 3 years ago, I published a simpel TRIAC AC dimmer for the arduino. That proved to be a very popular design. Yet in spite of the simplicity of the circuit the software needed was a bit complicated as it needed to keep track of […]
1″ 100W Hot-Plate for SMT Reflow
https://www.electronics-lab.com/1%e2%80%b3-100w-hot-plate-for-smt-reflow/
This is a small hot-plate for SMT reflow soldering build upon an Arduino Pro and controlled using PWM and high side power MOSFETs. Black Mesa Labs has been using a $20 hot plate for a year now for soldering QFN ICs to PCBs. Only issue so far has been the size ( 10″x10″x3″ ) and […]
Dual DC Motor driver using two L293D
https://www.electronics-lab.com/dual-dc-motor-driver-using-two-l293d/
Dual DC Motor driver using two L293D IC. The L293D device is quadruple high-current half-H driver. The 293D is designed to provide bidirectional drive current up to 600mA a voltage from 5V to 36V. It provides 600mA +600mA on each channel suitable for mini hobby robots. The board been designed mainly for small size robot, […]
PWM dimmer for RGB LED
https://www.electronics-lab.com/pwm-dimmer-for-rgb-led/
Lukas Fassler has designed and built a PWM dimmer for RGB LED: In my last post I’ve described the design and construction of my LED dimmer project. This project here is similar but a bit more involved. It controls RGB LEDs so it can not only change the brightness but also the color of the […]
PWM dimmer for LED lighting
https://www.electronics-lab.com/pwm-dimmer-for-led-lighting/
Lukas Fassler has published a new project, a DIY PWM dimmer for LED lighting. The dimmer can handle 100W@12V and is controlled by a single potentiometer. I have recently moved to a new penthouse and was looking for a PWM dimmer to control some 12V LED strips. I thought that should be easy enough nowadays […]
LMD18200 H-Bridge Module for DC Motor
https://www.electronics-lab.com/lmd18200-h-bridge-module-for-dc-motor/
The module has been designed around LMD18200 from Texas Instruments. The LMD18200 is a 3A H-Bridge designed for motion control applications. The device is built using a multi-technology process which combines bipolar and CMOS control circuitry with DMOS power devices on the same monolithic structure. Ideal for driving DC and stepper motors; the LMD18200 accommodates […]
Staff with Click Sound and Obstacle Alarm
https://www.electronics-lab.com/staff-with-click-sound-and-obstacle-alarm/
People who are visually impaired usually use a staff to guide them as they walk. They tap with their staff to know if an obstacle is present around. Others use the echolocation technique. They produce a clicking sound through their tongue, foot, and fingers and through this they detect objects from their surrounding by sensing […]