Makerfabs MaTouch 1.28-inch ToolSet AC Dimmer: ESP32-S3-Based Phase-Cut Dimming Controller with BT139 TRIAC
https://www.electronics-lab.com/makerfabs-matouch-1-28-inch-toolset-ac-dimmer-esp32-s3-based-phase-cut-dimming-controller-with-bt139-triac/
Makerfabs has introduced the MaTouch 1.28-inch ToolSet AC Dimmer, an open-source AC voltage controller based on the ESP32-S3. It is designed to dim lights and control motor speeds using phase-cut dimming. The device features an ESP32-S3 wireless MCU with 16MB flash and 8MB PSRAM, along with a 1.28-inch 240 x 240 capacitive touch display. The […]
Choosing the Right Diode – Types and Uses Explained for Beginners
https://www.electronics-lab.com/choosing-the-right-diode-types-and-uses-explained-for-beginners/
From small LED drivers to rectifiers to Switch Mode Power Supplies (SMPS), the diode is a key component in each of those everyday appliances. They are also used in charging LED indicators and reverse polarity protection circuits in router chargers and many more; diodes are used everywhere, but this little device often does not get […]
Free Elektor Article: Infrared Remote Controlled Dimmer
https://www.electronics-lab.com/free-elektor-article-infrared-remote-controlled-dimmer/
This IR remote controlled dimmer works with a triac and in its standard configuration is suitable for light electric heaters and incandescent lamps up to about 1000 watts. The PIC microcontroller used in the project can learn control codes from almost any remote control. Here’s power dimming from the comfy chair. by Juan Canton Free […]
Tiny Isolated Dimmer with Linearly Corrected Output
https://www.electronics-lab.com/tiny-isolated-dimmer-linearly-corrected-output/
Dimmers provide a way to reduce the power of resistive elements like heaters and light features by changing the waveform of the voltage applied to them. There are different approaches to the development/implementation of dimmers and there are a lot of how-to guides and projects based on them, but the general efficiency of these solutions […]
Dark Sensitive Lamp ON/OFF Controller
https://www.electronics-lab.com/dark-sensitive-lamp-onoff-controller/
Dark Sensitive Lamp controller project switches a load connected to it when light falling on LDR (Light Dependent Resistor) goes bellow set point. It could be used as an automatic street light application. The project is based on Triac and doesn’t requires additional DC supply, it works directly on 230VAC. Features Mains supply input 230 […]
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 […]
Arduino controlled Triac light dimmer
https://www.electronics-lab.com/arduino-controlled-light-dimmer/
diy_bloke @ instructables.com has build an arduino controlled triac light dimmer and describes the circuit and software used to achieve that. It becomes a bit more tricky if one wants to dim a mains AC lamp with an arduino: just limiting the current through e.g. a transistor is not really possible due to the large […]
AC Motor Speed Controller using U2008B
https://www.electronics-lab.com/ac-motor-speed-controller-using-u2008b/
This low cost current feedback phase control AC motor driver based on U2008 IC, The U2008B is designed as a phase control circuit in bipolar technology. It enables load-current detection as well as mains-compensated phase control. Motor control with load-current feedback and overload protection are preferred application. Specifications Supply In-put: 230V AC Load: Up to […]
AC Solid State Relay
https://www.electronics-lab.com/ac-solid-state-relay/
This simple circuit designed around Solid State Relay S216S02 from SHARP. The S216S02 solid State Relay (SSR) is an integration of an infrared emitting diode (IRED), a Phototraic Detector and a main output Traic. These devices are ideally suited for controlling high voltage AC loads with solid state reliability while providing 4KV isolation from input […]
230 VAC Timer
https://www.electronics-lab.com/230-vac-timer/
Classic AC 230 V Timer project can be used in all application requiring a timer of up-to 3 Minutes to operate or control any AC mains load of up-to 200 Watts. This project is based on the Classic 555 Timer IC, triggering a TRIAC. Input and Output is Optically Isolated. Specifications Supply input 12 VDC […]