⚡ Active or Passive Component: Do You Think You Know the Difference? In this 2nd post of my series on PID control in electronics, I propose to look at this distinction from a much more practical angle. We all learn that: • 🔹 A passive component consumes energy (resistor, lamp, capacitor…). • 🔹 An active component uses a power supply to amplify or generate a signal (op-amp, transistor…). Simple, right ? Well… not really. 👉 So how can a passive circuit perform the same function as an active one, even though their nature is completely different? 🤔 When we apply this difference to an electronic PID, the impact is immediate: • ⚙️ Passive → simple, cost-effective… but inevitable losses. • ⚙️ Active → amplification, better precision… but watch out for saturation! ❗ Before designing a PID, don’t forget to: 1️⃣ Study the system stability (open-loop and closed-loop) 2️⃣ Calculate the P, I, and D coefficients (tuning) 3️⃣ Then build the circuit. 🎁 In this post, I share with you a practical document that includes: • Simple & beginner-friendly guide to designing P action in electronic. • LTspice simulations to visualize the electronic parameters. • Falstad demos to test passive vs. active in real time. 💬 And you? Do you know how to reduce voltage drop in a purely passive circuit (at least for small loads) 🤔❓ 📌 Additional resources: 👉 Part 1 - Intro to PID controller : https://lnkd.in/enD9aMhq 👉 Falstad Demo (Passive Implementation) : https://lnkd.in/eGewaKQY 👉 Falstad Demo (Active Implementation) : https://lnkd.in/eJyndKS6 #Electronics #Automation #Engineering #PID #Controller #ControlSystems #EmbeddedSystems #LTspice #Falstad
Passive vs Active Components in PID Control: A Practical Guide
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🚀 Day 3 of My Power Electronics Challenge 📌 Topic: Active & Passive Components ⚡ Active Components Definition: Components that need an external power source to function and are capable of controlling the flow of current. Examples: Transistors, Diodes, ICs, SCRs, MOSFETs. Key Role: Amplification, switching, and signal control in electronic circuits. 🔋 Passive Components Definition: Components that do not require an external power source and cannot amplify signals. Examples: Resistors, Capacitors, Inductors, Transformers. Key Role: Store, resist, or dissipate energy to support overall circuit operation. ✨ In Short: ➡️ Active = Control + Amplify + Need Power ➡️ Passive = Support + Store/Dissipate + No Power Needed #Day3 #PowerElectronics #Transistors #ElectronicsEngineering #LearningJourney #PrachiTijare
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Do You Know What a Capacitor Really Stores? --- A capacitor is one of the most important components in electrical and electronic circuits. Many people confuse its function with storing current, voltage, or power, but the truth is: 👉 A capacitor stores electrical charge (Q). 👉 This charge is held in the electric field between its two plates. 👉 The amount of charge stored depends on its capacitance (C) and the voltage (V) across it, given by the formula: Q = C × V 💡 Applications: Used in power factor correction. Provides starting torque in motors. Smoothens voltage fluctuations in power supplies. Essential in filters and signal processing. So, the correct answer is: A capacitor stores Charge. ⚡ --- #ElectricalEngineering #Capacitor #Electronics #EngineeringFacts #PowerSystems #Learning #ElectricalDesign #EnergyStorage
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This is a Full Wave Precision Rectifier circuit using operational amplifiers (LM358D) and diodes (1N4148). Unlike conventional diode rectifiers, which suffer from a forward voltage drop (~0.7 V), a precision rectifier allows rectification of very small input signals by using op-amps to compensate for diode losses. Working: The first stage with op-amp U1, resistors (R1, R2), and diodes (D1, D2) acts as an absolute value generator. It inverts and rectifies the input signal, ensuring that both positive and negative half-cycles are properly shaped. Diodes D1 and D2 direct current flow depending on input polarity. R3 and R4 feed the rectified signal to the second stage. The second op-amp (U2) with R5 acts as a summing amplifier and inverter, ensuring that the output is always positive regardless of the input polarity. Applications: Precision AC signal measurement, waveform generation, instrumentation, and low-level signal detection where ordinary diodes fail. #ElectronicsEducation #electronics #rectifier
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Hardware Engineer | Industrial Electronics Expert | LATAM Technical Support | Project Management Professional
3wExcellent content! Thanks for bringing us with it, PID is the heart of the Industrial Automation.