Rose Lee

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2022-03-11 03:58:45 - Translate -

Why use a multimeter to detect that the VCC and GND of the MQ2 smoke sensor are short-circuited, and once the smoke sensor is connected to the minimum system board, when the power is not turned on, the VCC and GND are connected (it has been ruled out that the minimum system is not broken)
Introduction to smoke sensor: https://www.utmel.com/blog/categories/sensors/what-is-smoke-detector

Why use a multimeter to detect that the VCC and GND of the MQ2 smoke sensor are short-circuited, and once the smoke sensor is connected to the minimum system board, when the power is not turned on, the VCC and GND are connected (it has been ruled out that the minimum system is not broken) Introduction to smoke sensor: https://www.utmel.com/blog/categories/sensors/what-is-smoke-detector

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What is Smoke Detector? - Utmel

Hello everyone, I am Rose. Welcome back to the new post today. The smoke sensor detects whether or not there is smoke in the environment, as well as the concentration of smoke, such as sensing intense smoke during a fire. When the smoke probe comes into contact with smoke or another gas, its internal resistance changes, and an analog value is created to regulate it.

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Rose Lee added article Other
2022-04-08 02:36:51 - Translate -

What is the difference between a high frequency inverter and a power frequency inverter？
An inverter is a device that converts direct current (DC) to alternating current (AC) to meet the power demand of an AC load. According to the topology, inverters can be divided into high frequency inverters and power frequency inverters. High frequency inverter Since the high-frequency inverter adopts the high-frequency magnetic core material with small volume and light weight, the power...

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Rose Lee shared a link
2022-03-11 03:58:45 - Translate -

Why use a multimeter to detect that the VCC and GND of the MQ2 smoke sensor are short-circuited, and once the smoke sensor is connected to the minimum system board, when the power is not turned on, the VCC and GND are connected (it has been ruled out that the minimum system is not broken)
Introduction to smoke sensor: https://www.utmel.com/blog/categories/sensors/what-is-smoke-detector

Why use a multimeter to detect that the VCC and GND of the MQ2 smoke sensor are short-circuited, and once the smoke sensor is connected to the minimum system board, when the power is not turned on, the VCC and GND are connected (it has been ruled out that the minimum system is not broken) Introduction to smoke sensor: https://www.utmel.com/blog/categories/sensors/what-is-smoke-detector

WWW.UTMEL.COM

What is Smoke Detector? - Utmel
Hello everyone, I am Rose. Welcome back to the new post today. The smoke sensor detects whether or not there is smoke in the environment, as well as the concentration of smoke, such as sensing intense smoke during a fire. When the smoke probe comes into contact with smoke or another gas, its internal resistance changes, and an analog value is created to regulate it.

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2022-02-23 03:59:05 - Translate -

Besides SPI, I2C and UART, what other communication protocol you know? Today I will introduce QUIC to you.
https://www.utmel.com/blog/categories/integrated%20circuit/quic-the-next-generation-communication-protocol

Besides SPI, I2C and UART, what other communication protocol you know? Today I will introduce QUIC to you. https://www.utmel.com/blog/categories/integrated%20circuit/quic-the-next-generation-communication-protocol

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QUIC: The Next Generation Communication Protocol - Utmel
Hello everyone, I am Rose. Today I will introduce QUIC to you. QUIC (Quick UDP Internet Connection) is a UDP-based low-latency Internet transport layer protocol developed by Google.

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Rose Lee added article Other
2022-01-06 02:52:26 - Translate -

Several major factors affecting converter efficiency
1) Temperature The reaction temperature is different due to the different filler materials. The reaction temperature is given at home and abroad is generally in the range of 250-650℃, basically in the range of 315-400℃. The low-temperature reaction conditions are indeed not complete enough, and too high a temperature will cause problems. Lead to the existence of other side reactions. 2)...

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2021-12-06 08:52:11 - Translate -

Just wrote this article, electromagnetic radiation is horrible or not? Let's have a look.
https://www.utmel.com/blog/categories/rf/is-electromagnetic-radiation-from-base-stations-terrible

Just wrote this article, electromagnetic radiation is horrible or not? Let's have a look. https://www.utmel.com/blog/categories/rf/is-electromagnetic-radiation-from-base-stations-terrible

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Is Electromagnetic Radiation from Base Stations Terrible? - Utmel
Hello everyone, I am Rose. Today I will introduce electromagnetic radiation to you. Through this article, I hope that everyone can better understand electromagnetic radiation and protect themselves better.

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