TDA7297 balanced power amplifier board

Introduction: A power amplifier made using the tda7297 module, with onboard attenuation equalization tuning, has been successfully verified

Schematic PCB

Single lithium battery mppt module

Introduction: Single-cell lithium battery charging module using CN3791 with MPPT function (verified)

Schematic PCB

Digital 2.1 amplifier board

Introduction: Use two TPA3116 digital 2.1 amplifier boards to make listening to music more exciting!

Schematic PCB

Inverter-SG3525

Introduction: SG3525-Half-bridge Verification Board (verified)

Schematic PCB

PWM module

Introduction: PWM module, (verified)
25k main frequency 1 to 99 pwm module

Schematic PCB

Desktop music module

Introduction: Multifunctional desktop music module using Jerry AC6955F as main controller

Schematic PCB

Balanced Mixing Board – Single Power Supply

Introduction: It uses a single power supply, built-in resistor voltage divider, and uses the dual-channel preamplifier equalization tuning module of the NE5532 op amp. The verification is successful, as evidenced by the video.

Schematic PCB

Linear regulated DC power supply

Introduction: Multi-line linear regulated power supply (verified successfully)

Schematic PCB

Adjustable constant current electronic load v2.0

Introduction: High-power linearly adjustable constant current electronic load, verified

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Power filter board

Introduction: Power filter board composed of inductive components and capacitive components

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capacitor array

Introduction: Capacitor array, provides large current or energy storage, or power supply filtering, successfully verified, super easy to use for power amplifier filtering

Schematic PCB

Power amplifier board-single channel 100W MAX

Introduction: 100W single-channel power amplifier board, TPA3116D2, 4-channel bridge-BTL,

Schematic PCB

Serial downloader

Introduction: Serial port downloader made using CP2102, but not limited to RX-TX

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Patch testing tweezers

Introduction: Simple and useful test tweezers

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Desktop amplifier (op amp version)

Introduction: A 2.1 desktop power amplifier using two TEA2025B as the main power amplifier chip and jrc4558 op amp low-pass filtering.

Schematic PCB

Image timing mobile game controller

Introduction: Operated by the microcontroller program control module

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STM32F103C8T6 minimum system board

Introduction: STM32F103C8T6 minimum system board

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STM32F103VET6 development board

Introduction: The circuit of an STM32F103VET6 development board

Schematic PCB

Convert wired keyboard to bluetooth keyboard

简介：一个能将任意键盘转换为蓝牙键盘的电路

Schematic PCB

Auxiliary power supply design based on TPS543601

Introduction: Auxiliary power supply design based on TPS54360

Schematic PCB