CN0185

New Analog/Analog Isolator Using Isolated Σ-Δ Modulator, Isolated DC/DC Converter and Active Filter

Schematic PCB

2018 Electronic Competition Question A-Current Signal Detection Device (Hangzhou University of Electronic Science and Technology)

Schematic PCB

2021 Electronic Competition Question A (Signal Distortion Measurement Device) Provincial First Prize Code

Schematic PCB

RDR-736 - 7W wide-range input, dual output, non-isolated flyback converter based on LinkSwitch-XT2 900 V

Schematic PCB

ASL5115EVBMST: MLC ASL5115SHN Evaluation/Development Board

The ASL5115EVBMST is the main evaluation board for NXP's Matrix LED Controller (MLC) ASL5115SHN, which enables evaluation of external lighting systems.

CoolMOS™ CE 16W single-ended cap T8 lighting demonstration board in SOT-223 package

A SOT-223 packaged CoolMOS™ CE superjunction MOSFET (IPN60R3K4CE) (600V, 3.4Ω) is used as the main switch for this single-ended cap T8 LED lamp driver board with high line output and 16W/66V output converter. The converter uses ICL8201 (SOT23-6-1) to achieve average current controlled non-isolated single-stage buck topology in a cascade structure LED driver. Unique features of this reference design include single-stage design for high efficiency and power factor, single choke (no auxiliary winding) critical conduction operation, true regulated output current over a wide output voltage range, and excellent EMI performance and various protection modes for high reliability and small size that easily fits into a standard T8 LED lamp single-ended cap.

CN0181

Precision 16-bit level setting, total power consumption is less than 5 mW

Schematic PCB

CN0257

20-Bit, Linear, Low Noise, Precision, Unipolar +10 V DC Voltage Source

Schematic PCB

Direct AC LED driver with Bluetooth wireless dimming control

Picoamp Current Measurement Evaluation Kit

The picoamp (pA) level current measurement (hereinafter referred to as PAM) evaluation kit developed by Shijian Company covers the complete functions of detector signal processing in analytical instruments. The kit includes a current input conversion board, a voltage input buffer board, a data acquisition board and There are four components of the pin conversion board. Using this kit, customers can choose different daughter board combinations according to the characteristics of their products, quickly evaluate the performance of the devices in this kit, and shorten the design cycle. Both the current input conversion board and the voltage input buffer board use ADI's latest femtoamp (fA) input bias electrometer amplifier ADA4530-1, and the data acquisition board uses ADI's AD7172-2, 24-bit 31.25 kSPS. Σ-Δ ADC. The pin conversion board has been designed to make the pins of ADA4530-1 and AD549 and their power supplies compatible. Customers can directly evaluate the performance of ADA4530-1 on original products using the AD549 chip without re-making the board. This evaluation kit also provides host computer software for real-time waveform display and data analysis.

Schematic PCB

CN0194

Galvanically isolated, dual-channel, 16-bit, simultaneous sampling, daisy-chain data acquisition system

Schematic PCB

2019 Electronic Competition Question C-Circuit Load and Fault Detection Device-Design Report (National Secondary School, Nanxin)

Schematic PCB

CN0211

IF bandpass filter switching network for wireless infrastructure

Schematic PCB

CN0160

Universal Serial Bus (USB) Peripheral Isolator Circuit

Schematic PCB

20 W direct AC LED driver analog and phase-cut dimming

tCam-Mini: Wireless thermal imaging camera based on ESP32

tCam-Mini is a small wireless thermal camera designed and developed by Dan Julio based on ESP32, which allows users to easily obtain and use radiation data through the Flir Lepton 3.5 sensor. It can obtain the temperature of each pixel and perform various types of thermal imaging analysis; it can also convert the data into color images to display the temperature and shape of the human body through thermal imaging.

Schematic PCB

Simple circuit to detect mobile phones

Cell phones typically send and receive signals in the frequency range 0.9 to 3GHz. This article provides a simple circuit that detects the presence of an activated mobile phone by detecting these signals.
The basic principle of the mobile phone detector circuit is to detect radio frequency signals. In Schottky diode circuits, Schottky semiconductors are used to detect mobile phone signals because of their unique properties of being able to correct low-frequency signals with low noise rates. When an inductor is placed near an RF signal source, it receives the signal through mutual inductance. This signal is rectified by a Schottky diode. This low-power signal can be amplified and used to power any indicator light, such as an LED in this case.

Schematic PCB

SEC-6D6KW-OBC-SIC-GEVB: 6.6kW OBC silicon carbide model

75W Continuous Conduction Mode (CCM) Buck LED Driver

2019 National Electronic Design Competition National Second Prize Code for Question D (Simple Circuit Characteristics Tester)

Schematic PCB