What does RU (UR) label on DC power relays mean?
2016年4月5日 · I'm trying to figure out what does RU or maybe UR label mean on the body of many many relays. It's labeled almost on all (I've seen so far) DC relays which make me very …
If a device has UR sign on the label, it called it is UL approved or ...
2017年5月30日 · The UR mark is used for components of products that would need a UL product listing. When a product made with UR recognized components is submitted to UL listing, UL …
Blower motor run capacitor replacement - Electrical Engineering …
2020年9月15日 · Note that the EEC capacitor does not appear to be a UL-recognized component; the original All-Earth is (the backwards UR logo on the bottom-left of the silkscreened area).
identification - Identify Logos on Bridge Rectifier - Electrical ...
2017年3月9日 · This is one of two bridge rectifiers recovered from a failed LED lamp. I've seen the 'backwards R' before but don't know what it means/identifies. The other logo on the left is …
Programming STM32 via USB using the CubeProgrammer
2023年4月4日 · It will not work, because the STM32F103 factory bootloader does not support USB DFU. If you want to have USB DFU, you must first program a custom bootloader which …
Is it okay to use a power supply that provides slightly more …
The weird symbol indicates its a DC output. This laptop adapter supplies an output voltage of 19 V and a maximum output current of 3.42 A, well above your original adapter's 2A maximum. This …
ST-Link cannot software reset my STM32 MCUs over SWD
2021年1月31日 · I've been working on a problem with two different boards (one using an STM32F7 and the other using STM32F3). When attempting to program the boards (using an …
What are ALMs, LEs and ALUTs? - Electrical Engineering Stack …
2013年7月1日 · Altera's and Xilinx's basic building block is a 4-input look-up table (LUT), a flip-flop and some additional circuitry that Altera calls a logic element (LE) and Xilinx calls a logic cell …
What is the science behind percussive maintenance?
2016年1月2日 · I independently discovered this in real life, as have many people. Anecdotally this seems to have been common with CRTs, both monitors and TVs, perhaps because of the …
Facing problem to download Hex file to STM32 using Command line
2022年6月22日 · I managed to write a script for flashing hex file into STM microcontroller. "C:\Program Files\STMicroelectronics\STM32 ST-LINK Utility\ST-LINK Utility\ST …