[Test passed] 18650 lithium battery camping lamp flashlight table lamp

Introduction: This design is based on sy3501, which has the function of charging and discharging the lithium battery to boost the voltage, and drives the LED light panel for lighting. The equipment switch is designed with a mercury switch to realize the function of forward and reverse control of LED turning on and off.

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[Untested] 18650 charging and boosting integrated board

Introduction: 18650 lithium battery mobile power motherboard

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IP6505_16-port power supply main control board

Introduction: Using eWeLink ESP8285, four channels can be controlled by mobile phone and then 16 IP6505 chips can be divided into four groups for control.

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Zhirong sw6208 power bank A+C solution

Introduction: Handheld single-section mobile power bank A+C

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5V boost circuit

Introduction: 5V boost circuit, input 5V, output 8.5V~24.0V

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Xiaoxi->Portable desktop uninterruptible power supply

Introduction: ⭐ Portable desktop uninterruptible power supply ⭐
Uses IP5306 to manage battery, XL6019E1 boost/voltage regulation output

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Buck-boost power supply

Introduction: It meets some normal power supply needs. It is more convenient to hold when doing experiments. The power supply ripple is small and the driving ability is strong.

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Semiconductor laser driver-supports 0-100K TTL modulation

Introduction: Laser constant current driver module that supports 0-100K TTL modulation, waveform rise time <2us, maximum output current 3.5A, input voltage 12-20V

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6S automatic step-up and step-down balanced charging/automatic step-up and step-down adjustable power supply

Introduction: An automatic step-up and step-down balancing charger that supports 6S lithium batteries and can achieve high-precision voltage detection. This product can also be used as an adjustable power supply.

Positive and negative linear regulated power supply

Introduction: A simple linear regulated power supply composed of 78xx and 79xx, which can power preamplifiers, headphone amplifiers and other applications that require positive and negative voltages.

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LM27762 Low Noise Positive and Negative Output Charge Pump Verification Board

Introduction: TI LM27762 (C134018) charge pump verification board

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Discrete amplifier mos output version 1969

Introduction: Full chip aluminum substrate mos output 1969, refer to the circuit design of this post http://bbs.hifidiy.net/thread-1157107-1-1.html, the measured performance is good, and the cost is also very low

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BM3451 startup level lithium battery protection board

Introduction: The lithium battery protection board based on BM3451 uses high-power MOS tubes to increase the output current.

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FOC_Drive

Introduction: Dual-channel brushless DC motor driver
control board link: https://oshwhub.com/xue_jingfei/foc_pro

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TypeC test board

Introduction: A PCB that leads out all typec pins

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[Solicitation Order] Bi She-Hybrid Unmanned Ship

Introduction: Two DCDC modules, namely MPPT (for solar maximum power point tracking, simple disturbance observation method) and 24/12 DCDC; control the smallest system board using stm32f4, the project is simple, and it is the first time for novices to contact power electronics , there are many issues that I hope you guys can correct me on.

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3.7 to 12VMAX synchronous boost board, low ripple

Introduction: 3.7 to 12VMAX synchronous boost board, theoretical maximum output 9V3A, post-stage Π filtering but the loop stability has not been evaluated

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allinone3.SchDoc

Introduction: vesc75300, verify that it can be driven

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1.5V wireless keyboard and mouse charging solution

Introduction: Make the chip look like an AA battery, connect it to a 3.7V battery, and realize Type-C direct charging and 1.5V discharge.

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AMS1117

Introduction: AMS1117 voltage stabilizing module 12V to 5V to 3.3V

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