Deuterium Lamp SMPS

Fri, 20 May 2022 00:00:00 +0000

Deuterium lamp is a kind of ultraviolet light source, which emits light in the wavelength range of 190~400nm continuous spectral band.

By comprehensively utilizing the technical advantages of linear switching mode power supply and modern power electronics technology, we can make the deuterium lamp power supply miniaturized, intelligent, and extend the service life of the traditional deuterium lamp.

Working Principle

The voltammetry characteristic curve of deuterium lamp gas discharge is as follows. The working range of the deuterium lamp is the working range of the arc type and discharge on the charging and discharging characteristic curve of the gas cathode.

Working Principle

Technical Index

According to the overall design and the requirements of deuterium lamp electrical parameters, combined with the market demand and own level, I made the expected design and planning for the designed deuterium lamp power supply parameters.

Technical Index

Circuit Design

The voltage of the power module is boosted from 24V to 80V, so the BOOST converter is used as the main circuit topology.

Boost Converter

The main circuit is divided into primary circuit and secondary circuit. The input voltage of the system is 24V. The control signal is realized by UC3843. In the primary loop, the voltage boost is realized, and the sampling resistance is set to control the peak current and play the role of current limiting. In the secondary loop, A constant current circuit is set with A constant current of 0.3A.

Flow Diagram

The main circuit and control circuit are designed according to the index requirements, parameter calculation and BOOST topology.

Circuit Diagram

Simulated Analysis

Output Current Waveform ( ≈ 300 mA )

Output Current Waveform

Output Ripple Current ( ≤ 0.1 % )

Output Ripple Current

Output Voltage Waveform ( ≤ 80 V )

Output Voltage Waveform

Output Ripple Voltage ( ≤ 0.1 % )

Output Ripple Voltage

LED Dot-matrix

Sat, 30 Oct 2021 00:00:00 +0000

This project originated from an academic competition, based on LED Dot-matrix PWM control to adjust a variety of colors, with touch device and APP software, design and manufacture of intelligent tone modulation light system

Hardware

The product consists of 4 × 7 LED to form the LED dot matrix, including MCU main control module, voltage regulator module, WiFi module, touch module.

Hardware - Schematic Diagram

Hardware - Circuit Diagram

Software

A variety of images can be designed through the LED imaging principle. The output voltage duty cycle can be controlled by PWM to control the color and brightness of LED. The intelligent tone modulation light system can be realized with the key, touch wheel and touch slider

Software

APP Development

Based on the Tuya loT platform MCU SDK development cloud, so as to develop the 6 functions of the product, respectively, switch, brightness, breathing light, static, color, animation.

APP

In order to achieve a simple and beautiful page, we use blue as the main color of the UI interface. It includes the main interface, breathing light interface, intelligent interaction interface.

Through continuous modification and debugging, we designed a simple and beautiful APP control system.

Edition

Product Display

👇🏻 Please see the video Product Display below

LED Dot-matrix Display

APP Control Display

Electron | Benjamin

Deuterium Lamp SMPS

Working Principle

Technical Index

Circuit Design

Simulated Analysis

LED Dot-matrix

Hardware

Software

APP Development

Product Display