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Search result for: WA 0812 2782 5310 Tukang Plafon PVC Industrial Terpercaya Getasan Kab Semarang
| # | Post Title | Result Info | Date | User | Forum |
| Answer to: How do I interface a 4–20 mA industrial sensor with an Arduino? | 12 Relevance | 10 months ago | TechSpark | Arduino | |
| ... voltage drop resistor. The most widely used value is 250 Ω, because it maps the 4–20 mA current range to exactly 1–5 V, which fits perfectly within the Arduino's 0–5 V analog input range. This WAy, 4 mA gives a 1 V drop, and 20 mA gives a 5 V drop across the resistor. The sensor typically has two wires: one connects to the +24 V power supply, and the other connects to one side of the 250 Ω resistor. The other side of that resistor goes to GND, which must be shared with the Arduino. To measure the voltage, the analog pin is connected to the node between the ... | |||||
| How do I interface a 4–20 mA industrial sensor with an Arduino? | 10 Relevance | 10 months ago | Electronix | Arduino | |
| I’m building a data logger using an Arduino and a few Industrial sensors that output 4–20 mA current signals. Since the Arduino reads voltage on its analog pins, I plan to use resistors to convert the 4–20 mA current into a measurable voltage (0–5V range). Before I proceed, I’d appreciate some guidance: What resistor value is commonly used to convert 4–20 mA into a voltage safely readable by the Arduino ADC? Can I connect multiple sensors directly to separate analog pins using individual resistors? Do I need to worry about electrical isolation, common ground issues, or signal interference? Are there any recommended protection or filtering techniques for accurate readings? If anyone has a proven approach, example circuit, or tips for reading multiple 4–20 mA signals reliably with Arduino, I’d love to hear them. | |||||
| Answer to: Why Fluke multimeters are so expensive? | 6 Relevance | 1 year ago | Neeraj Dev | Equipments | |
| ... designed to provide precise and accurate readings, which are crucial for troubleshooting and validation tasks in both professional and Industrial settings. Calibration Standards: These devices meet stringent calibration standards, ensuring consistent and reliable measurements over time. Advanced Features: Fluke includes features such as true-RMS (Root Mean Square) measurement, essential for accurately assessing non-linear loads and modern electronics. 2. Durability and Safety Robust Construction: Fluke multimeters are engineered to withstand harsh environ ... | |||||
| Answer to: STM32 vs Arduino: Which One is Better? | 3 Relevance | 10 months ago | Kanishk | Hardware/Schematic | |
| Arduino is excellent for beginners, rapid prototyping, and educational purposes. Its simplicity, massive community support, and easy-to-use libraries make it ideal for getting started with embedded systems. You can quickly connect sensors, write basic logic, and see results — no steep learning curve involved. STM32, however, is a more powerful and professional-grade platform. It’s widely used in Industrial, automotive, and consumer electronics (e.g., car ECUs, VR systems like Oculus, drones, and medical devices). By working with STM32, you gain exposure to ARM Cortex-M cores, which are the backbone of many real-world embedded applications. | |||||
| Answer to: Why Fluke multimeters are so expensive? | 3 Relevance | 6 months ago | maryjlee | Equipments | |
| ... etc. Tough housing, drop-tests, high-CAT safety ratings. High accuracy, true-RMS, stable calibration. Long lifespan, support and WArranty which reduce long-term cost. If you’re replacing a hobby-meter and don’t work in heavy duty applications, yes you might be fine with a cheaper brand. But if you need one tool that you can trust under serious conditions, the extra cost makes sense. | |||||
| Answer to: MOSFET vs IGBT – What’s the Difference and When to Use Each? | 3 Relevance | 9 months ago | Digital Dynamo | Theoretical questions | |
| You see MOSFETs and IGBTs are used as power switching devices, but they are optimized for different conditions. MOSFETs are generally preferred in low to medium voltage applications (up to a few hundred volts) because they switch very fast and have low conduction losses at these voltage levels. This makes them ideal for circuits that require high-frequency switching, such as DC-DC converters, SMPS, and motor drivers. On the other hand, IGBTs are better suited for high voltage and high current applications, often above 400V, where MOSFETs become less efficient. While IGBTs switch slower compared to MOSFETs, they handle higher voltages with lower conduction losses, which is why they are commonly used in Industrial motor drives, electric vehicle inverters, and other high-power converters. In simple terms, MOSFETs are chosen for speed and efficiency at lower voltages, while IGBTs are chosen for handling large amounts of power at higher voltages where switching speed is less critical. | |||||
| Answer to: BJT VS MOSFET- Current controlled vs Voltage controlled | 3 Relevance | 10 months ago | TechTalks | Theoretical questions | |
| MOSFETs are great for fast switching and are commonly used in inverter circuits, DC-DC converters, and motor drivers — up to a few hundred volts and moderate power levels. But when you start dealing with high voltages and power (like in Industrial inverters or motor drives), IGBTs are preferred. They’re not as fast as MOSFETs but handle high voltage and current better. | |||||
| Answer to: What is the role of CoAP in IoT? | 3 Relevance | 11 months ago | Tech Geek | Theoretical questions | |
| CoAP (Constrained Application Protocol) is designed specifically for resource-constrained IoT devices and networks. It’s preferred over HTTP because it’s lightweight, uses UDP (not TCP), and has lower overhead, making it ideal for low-power devices and lossy networks. Compared to MQTT, CoAP is better for request/response models and supports multicast and built-in resource discovery. It’s commonly used in constrained environments like smart homes, Industrial sensors, or low-power mesh networks. | |||||
| Answer to: ESP32 or STM32: Which is better for IoT? | 3 Relevance | 1 year ago | Harper | ESP32 | |
| I would recommend the STM32 for its robust peripherals, low power consumption, and scalability in Industrial or high-performance applications. | |||||
| Answer to: How does PID control work in automation? | 3 Relevance | 11 months ago | Tech Geek | Theoretical questions | |
| PID (Proportional-Integral-Derivative) control is a fundamental feedback mechanism used in automation to maintain the stability and accuracy of a system. It continuously calculates an error value as the difference between a desired setpoint and a measured process variable, then applies corrections based on three terms: proportional, integral, and derivative. The proportional term (P) reacts to the current error. It produces an output that is directly proportional to the magnitude of the error. The larger the error, the stronger the corrective response. However, relying on proportional control alone often leaves a steady-state error, where the system stabilizes near the setpoint but not exactly at it. The integral term (I) addresses this by considering the accumulation of past errors. It integrates the error over time and adds a correction based on the sum of those errors. This helps eliminate the steady-state error and brings the output closer to the exact setpoint. However, too much integral action can cause the system to become unstable and oscillate. The derivative term (D) predicts future error by looking at the rate of change of the error. It provides a damping effect by slowing the response as the system approaches the setpoint, reducing overshoot and helping stabilize the system. A common example of PID control is in temperature regulation, such as in an oven. If the oven is set to maintain 200°C, the PID controller compares the actual temperature with the setpoint. If the temperature is too low (error), the proportional term increases the heater output. If the temperature has been low for a while, the integral term adds more power. As the temperature rises quickly, the derivative term kicks in to prevent overshooting beyond 200°C. PID controllers are widely used in Industrial automation for applications like motor speed control, robotic arm positioning, pressure control in chemical processes, and flight control systems in drones. Their ability to provide precise and stable control makes them essential in systems where accuracy and reliability are critical. | |||||
| RE: What are some innovative ways to use an HC-SR04 ultrasonic sensor? | 3 Relevance | 11 months ago | xecor | Arduino | |
| @bryan What are some innovative WAys to use the HC-SR04 ultrasonic sensor? This is a very interesting question! Traditionally, the HC-SR04 is used for distance measurement and obstacle avoidance, but its potential applications go far beyond that. Here are some innovative ideas: Multi-sensor Fusion Combine multiple HC-SR04 sensors and use algorithms to fuse their distance data, enabling more accurate environmental mapping and object recognition. Gesture Recognition Utilize the timing and intensity variations of ultrasonic echoes, combined with machine learn ... | |||||
| Answer to: Why are quartz crystals preferred for clock generation? | 3 Relevance | 12 months ago | Deboojit | Theoretical questions | |
| Quartz crystals are popular in electronic circuits for clock generation mainly because of their accuracy and stability. Compared to other timing methods like RC oscillators or ceramic resonators, quartz crystals maintain a very precise and consistent frequency over time and across temperature variations. They typically have an accuracy around ±50 ppm or better, which is more than enough for most microcontroller and communication applications. Plus, quartz is naturally piezoelectric, so when cut and shaped properly, it can resonate at a predictable frequency when voltage is applied, making it ideal for generating clean, low-jitter clock signals. Another reason they're so widely used is that they’re cost-effective. You get a high level of precision and long-term reliability without a high price, which is perfect for both consumer electronics and Industrial applications. | |||||
| Answer to: Electrical isolation vs. grounding? | 3 Relevance | 1 year ago | LogicLab | Theoretical questions | |
| Grounding and isolation are used for protection, but serve different purposes. Grounding provides a safe path for fault currents to flow to the earth, protecting people from electric shock and stabilizing voltage levels, commonly used in household appliances and power systems. Isolation, conversely, electrically separates two circuits while still allowing signal or power transfer, often using transformers or optocouplers. It’s mainly used to protect sensitive electronics, especially when dealing with different ground potentials or high-voltage environments like medical devices or Industrial systems. Grounding is about safety; isolation is about separation and protection. | |||||
