REF_ICL8800_LED_43W This 43 W reference design uses Infineon's high power factor flyback controller ICL8800. The evaluation board is a constant voltage (CV) secondary side regulation (SSR) system designed for use with a constant current (CC) converter for LED lighting applications. Two-stage topologies are becoming increasingly popular due to the easy scalability of primary-side power and secondary-side characteristics. The REF_ICL8800_LED_43W solution features a plug-and-play design and can be used with the secondary-side DC/DC evaluation board. As a default, the reference design board is equipped with a depletion mode MOSFET BSS126I based startup circuit on a small adapter board. This setup will significantly reduce standby losses. If low standby power consumption is not required, the startup circuit can be changed to a resistive startup design. This reference design comes with two conditioning circuits. Both are plug-and-play solutions, but at least one circuit must be connected to the motherboard. There is a cost trade-off between the two evaluation boards; the TL431 evaluation board is lower cost and has good standby performance, while the op amp board exhibits excellent overall performance at the 30 mW power level.
The meiji-led-ring is a compact light source that can be mounted on the front of a Meiji microscope. The illuminator uses 24 LEDs along with some high frequency boost drivers to avoid flickering when shooting. The device is powered by the USB-C port. A small ATSAML10 microcontroller is used to control the brightness of the LED driver. The user controls a series of touch sensors from the edge of the PCB.
The led-panel originated from the author's desire to use a donated roll of white LEDs to break out 48 LEDs on a compact board. Its output power should reach about 4W. It has no controller and is purely for testing a set of LEDs to see if they would be suitable for some form of lighting attached to a gooseneck.
The MAXREFDES1275 has three main blocks: the microcontroller, ADC/DAC IC MAX11311, and three LED drivers.
Low Line Only Low Profile T8, Isolated 23 W, Power Factor Corrected (PF >0.98), LED Driver Using LYTSwitchTM LYT4215E
This engineering report describes a constant voltage (CV) output 8.4 W isolated flyback power supply with a single stage power factor correction circuit for smart lighting applications. The power supply is designed to provide a 24 V constant voltage across 0mA to 350 mA output current load. The board is optimized to operate with an input voltage range of 90 VAC to 265 VAC.
Two-wire forward/reverse phase Bluetooth low-energy (BLE) smart dimmer switch using LinkSwitch-TNZ (LNK3302D) with lossless AC zero-crossing detection
42 W Dual Port Isolated Flyback Power Supply with 30 W USB PD 3.0 and 12 W USB-A Port Using InnoSwitch3-Pro with PowiGaN Technology (INN3379C-H302)
150 W Power Factor Corrected LLC Power Supply with PWM Dimming Using HiperPFS-4 (PFS7625H), HiperLCS (LCS702HG), CAPZero-2 (CAP200DG) and Qspeed X-Series Diode (LXA03T600)
100 W 2-Stage Boost and Isolated Flyback 3-Way Dimmable LED Ballast using HiperPFS-4 (PFS7626C) and LYTSwitch-6 (LYT6079C, incorporates PowiGaN Technology)
This engineering report describes a 48 V, 150 W reference design power supply for 90 VAC - 265 VAC LED street lights which can also serve as a general purpose evaluation board for the combination of a PFS power factor stage with an LCS output stage using devices from the Power Integration’s HiperPFS and HiperLCS device families.
With electronic ink screen, can simulate various IC cards
Introducing a Bluetooth application solution with very rich usage scenarios - a Bluetooth smart lock solution developed based on the MM32W series.
The project implementation uses RSL10 and external mechanical control structure to complete wireless control of traditional switches.
The acceleration sensing unit (RSL10+KX023) attached to the back of the door is used to detect vibration and movement to detect events such as opening the door and knocking on the door. It also interacts with the terminal through information through BLE and can view the log on the handheld terminal. Handheld terminals are also implemented with RSL10. After powering on, it automatically scans the target device and connects to it. After connecting, it obtains the time and date information of the device (which can be modified at this time), and then enters the log interface. The wireless sensing unit and the BLE terminal exchange information through the BLE connection.
The system consists of STC89C52 microcontroller, 4*4 matrix keyboard, buzzer, reset circuit and crystal oscillator circuit, relay, etc. The 4*4 keyboard is mainly used for password input and modification, buzzer alarm, reset circuit and crystal oscillator circuit with STC89C52 The single-chip microcomputer constitutes the smallest system of single-chip microcomputer. It has functions such as setting and modifying 6-digit user passwords, alarming for incorrect input, and alarming for incorrect passwords. This system is low in cost and practical in function.
Smart curtain simulation design based on stm32, including source program and Proteus simulation files
Realized functions: Use the mobile phone APP to adjust the light intensity according to the amount of people walking around and remotely control the lights.
Use 51 microcontroller STC89C52, clock chip DS1302, liquid crystal screen LCD1602, photoresistor, and infrared tube to design a classroom intelligent lighting control system
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