TPS40192 Smartphone Battery Bypass Power Supply Board: 12 V to 4.15 V
Quick Start Guide Board Interface Definitions No. Interface / Indicator Description 1 4.15 V Output Indicator LED indicator for the 4.15 V output. 2 12 V Input Indicator LED indicator for the 12 V input power. 3 DC 5521 Power Input (12 V) DC 5.5 × 2.1 mm…
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Designing a 2.4GHz Remote Power Switch for an Automotive Jump Starter
Introduction If you regularly work on cars or keep a portable jump starter in your vehicle, you may have noticed a small but annoying problem with conventional jump starters. Most portable jump starters use a very simple output design: the positive and…
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F1C200S/100S XhtCore-Based Core Board/Development Board
1. Introduction: Why I Built the XhtCore Board The XhtCore project started as a personal effort to revisit the Allwinner F1C200S SoC, organize what I had learned about the chip, and turn that knowledge into an open-source hardware project that others…
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DIY USB-C Isolated USB-to-UART Adapter: CH9102X, Dual Voltage Support, and Full Signal Isolation
Introduction: Why I Designed My Own Isolated USB-to-UART Adapter A USB-to-UART adapter is one of the most frequently used tools on an electronics engineer’s workbench. Whether I am debugging an MCU, capturing boot logs, flashing firmware, or…
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