Smart LED Dimmer Controlled via Bluetooth
https://www.electronics-lab.com/smart-led-dimmer-controlled-via-bluetooth/
Author: Anas Ajaj for Dialog Semiconductor Introduction This article describes how to build a smart digital dimmer. A dimmer is a common light switch that is used in houses, hotels and many other buildings. Older versions of dimmer switches were manual, and would typically incorporate a rotary switch (potentiometer) or buttons to control the light […]
12W Dimmer with Soft Start for 12V LEDs
https://www.electronics-lab.com/12w-dimmer-with-soft-start-for-12v-leds/
The circuit presented here is a LED dimmer with a soft-start function. The board can drive a LED up to 12W and the circuit can manage a load up to 1A continuous with 12Vsupply. The circuit is built using SG3525 PWM IC and the IRFR120 MOSFET, SG3525 generates the PWM, and IRFR120 MOSFET drives the […]
VIPER222 – high voltage MOSFET with a PWM control
https://www.electronics-lab.com/viper222-high-voltage-mosfet-pwm-control/
The VIPER222 device is a high performance high voltage converter that combines a 730 V rugged power MOSFET with a PWM control. The device embeds the high voltage startup and the current sense circuit, avoiding the use of extra components in the BoM. Frequency jittering spreads the EMI and allows the use of a small […]
Multiple Dimming Isolated PWM Controller for high-performance LED lighting
https://www.electronics-lab.com/multiple-dimming-isolated-pwm-controller-high-performance-led-lighting/
Diodes Incorporated announced the availability of the versatile dimming input controller for offline LED lamps. AL8116 works with three types of dimmer signal formats: 0 to 10 V dimming voltage PWM (Pulse Width Modulation) signal Simple potentiometer It converts these to a PWM output signal which can easily be used to provide an isolated dimming control […]
2.7A PWM Valve/Solenoid Driver Arduino Nano Shield
https://www.electronics-lab.com/2-7a-pwm-valve-solenoid-driver-arduino-nano-shield/
This Arduino shield helps to drive various loads like a solenoid, valve, motor, inductive actuator, heater, and bulb. A wide supply range 8V-60V and a load current of 2.7A allows it to be used with a variety of actuators. The board can be used as a stand-alone driver or it can be controlled by Arduino […]
750mA Constant Current LED Driver Arduino Nano Shield
https://www.electronics-lab.com/750ma-constant-current-led-driver-arduino-nano-shield/
This small constant current LED driver Nano shield has been designed using CAT4104 IC from ON semiconductor. Its 4 channel LED driver. The board has provision to mount 20 SMD 1206 LEDs. The LED can be RED, GREEN, BLUE and WHITE. Reduce the number of LED to 12 if White LEDs are used, as white […]
Dual Forward/Reverse DC Motor Driver with Brake for Robots
https://www.electronics-lab.com/dual-forward-reverse-dc-motor-driver-brake-robots/
This high current forward-reverse DC motor driver is built using STK681-332 IC from ON Semiconductor. The circuit can drive brushed DC Motor with up to 12 A peak current. The circuit requires 3 input signals: Enable for PWM input for speed control, IN1 and IN2 to change the motor direction and to apply the brake […]
Built-in Inductor Negative Output Voltage Expanded Lineup of “micro DC/DC” Converters
https://www.electronics-lab.com/built-inductor-negative-output-voltage-expanded-lineup-micro-dc-dc-converters/
Torex Semiconductor has launched the XCL303/XCL304 as a new series of inductor built-in negative output voltage “micro DC/DC” Converters. The XCL303/XCL304 series are small coil-integrated negative voltage micro DC/DC converter IC. Increased oscillating frequency to 2.5 MHz and by adopting the small package CL-2025-02 (2.5 × 2.0 × 1.0 mm), the mounting area is reduced by approximately […]
Create +/-12V Split Rail From A 5V Bias
https://www.electronics-lab.com/create-12v-split-rail-5v-bias/
With digital semiconductor technology driving system power supplies to lower voltages for higher performance and lower system power, sensitive analog sensor circuits face a growing problem. Much of the inherent noise created in the early stages of an analog sensor signal path is independent of the amplifier bias voltage, so using a higher bias voltage […]
Class D Amplifiers
https://www.electronics-lab.com/article/class-d-amplifiers/
Introduction In the previous tutorials, an important link has been established between the conduction angle of an amplifier and it’s efficiency. Indeed, high conduction angles-based amplifiers offer a very good linearity such as the class A Amplifiers but present a very limited efficiency, generally around 20 to 30 %. As the conduction angle is decreased, […]