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I’m excited to share our latest Application Note on the WE-CMDC series – Compact Dual Choke, now available for download. This note provides valuable insights into how the WE-CMDC can improve EMI suppression and differential mode filtering in compact designs.
Accurate PCB thermal analysis demands full layout awareness, DC IR simulation, and iterative modeling as copper conductivity shifts with temperature. Check out Juliano's post for more details:
Thermal issues are one of the most overlooked yet impactful challenges in electronics. When simulating temperature in your PCB or package, do you:
1-Consider the layout (all layers) and how it influences heat distribution?
2-Account for electrical currents using DC IR simulation? Not only DC BTW :)
3-Iterate between thermal and DC IR simulations, knowing that copper conductivity changes with temperature?
These are three essential considerations often missed in thermal analysis—but they can make a huge difference in accuracy and reliability.
Below is an example of a temperature plot and speed vectors computed iteratively using #Ansys SIwave (for DC IR) and Icepak (for thermal simulation). Let’s raise the bar on thermal modeling. How do you approach it?
This circuit demonstrates an opto-isolated motor driver using the PC817 optocoupler and 2N3904 transistor. The input signal (HCT logic pulses) drives the LED inside the optocoupler, producing light that activates the phototransistor while maintaining complete electrical isolation between the input and output. When the input is high, the phototransistor conducts, providing base current to the 2N3904 transistor, which then drives the motor from a 12V supply. A diode (1N4148) is connected across the motor to protect against back EMF. This design ensures safe and reliable motor control while preventing noise or high voltages from feeding back into the logic circuit.
This circuit demonstrates an opto-isolated motor driver using the PC817 optocoupler and 2N3904 transistor. The input signal (HCT logic pulses) drives the LED inside the optocoupler, producing light that activates the phototransistor while maintaining complete electrical isolation between the input and output. When the input is high, the phototransistor conducts, providing base current to the 2N3904 transistor, which then drives the motor from a 12V supply. A diode (1N4148) is connected across the motor to protect against back EMF. This design ensures safe and reliable motor control while preventing noise or high voltages from feeding back into the logic circuit.
The SX-R 20-1 Langer EMV-Technik is a Near-Field Probe Set that has a passive near-field probe for the measurement of high-frequency magnetic fields from 1 to 20 GHz. The probe head enables measurements close to the electronic assembly, e.g., IC pins, conductors, components, and interconnections to quickly locate interference sources, determine field orientation and analyze field distribution.
Download Datasheet: https://ow.ly/XYrZ50WLZs5#PCB#Directory#Product#NearFieldProbe#HighFrequencyMeasurement#EMVTechnik
📡 Unlock the Power of Accurate RF Simulations
Do you truly understand your S-parameters?
Whether you're designing RF/microwave inductors, wideband transformers, or high-speed common mode chokes, a deeper understanding of S-parameters can be a game-changer.
In this must-read guide from Coilcraft, Inc., it breaks down:
🔍 What S-parameters actually mean
⚙️ How they're measured
🚫 Their limitations — and why they matter
✅ Best practices for applying them in high-frequency simulations
Better insights lead to better models — and ultimately, better designs.
📘 Dive into the fundamentals that drive simulation accuracy.
Download Now - https://ow.ly/PO5w50WRQg2#sparameters#rfdesign#technology#highspeeddesign#electronicsdesign
New Application Note: PCB Layout Integration Guidelines for BOS1921/BOS1931
Proper PCB layout is fundamental to achieving optimal performance with piezoelectric haptic drivers. High-frequency switching circuits require specialized design considerations that go beyond standard digital layout practices.
Our latest application note (BT015DAN04.01) provides field-tested layout principles for integrating the BOS1921/BOS1931 piezoelectric haptic driver, covering:
Current switching loop optimization
- PGND island implementation techniques
- Layer stackup recommendations for 2-layer and 4-layer designs
- Component placement strategies for space-constrained applications
- Proven layout examples for both QFN and WLCSP packages
The document includes tested designs ranging from maximum output drive configurations (9 x 11.5 mm) to very small load applications (5.5 x 9 mm), with detailed guidance on managing high dV/dt and high dI/dt signals.
Understanding these layout principles can prevent performance issues, reduce EMI, and eliminate the need for costly PCB respins during development.
Download the complete application note: https://hubs.li/Q03JXJKJ0
Protecting Analog Inputs: Schottky vs Zener?
When designing reliable circuits, protecting sensitive ADC pins is critical. Two common components used are Schottky diodes and Zener diodes, but they don’t play the same role.
✅ Schottky diodes are fast and clamp tightly near the supply rail (for example, ~3.4 V in a 3.3 V system). This makes them perfect as a first line of defense for ADC protection.
✅ Zener diodes turn on later, but they can absorb larger surges because of their higher energy-handling capability. They add capacitance, so they’re not always ideal for precision signals, but as a second layer of protection, they can save the day.
In practice, many designs combine the two:
- Schottky for quick, precise clamping
- Zener/TVS for bulk surge absorption
It’s a small detail, but one that often determines whether a board survives the unexpected.
👉 How do you usually protect your analog or digital inputs, Schottky, Zener, RC filters, or something else?
#ElectronicsDesign#PCBDesign#EmbeddedSystems#HardwareEngineering
FNIRSI DST-201 Oscilloscope Multimeter | How to Measure Capacitance Accurately? ⚡#fnirsi#oscilloscope#multimeter
Accurate capacitance measurement is essential in electronics design and R&D.
This video demonstrates how to use the FNIRSI DST-201 Oscilloscope Multimeter:
Avoid errors in automatic mode
Switch to capacitance mode manually
Discharge capacitors before measuring for accurate results
Key Features:
· 19,999 TRMS Multimeter: AC/DC voltage, current, resistance, capacitance, frequency, diode, temperature, continuity, live/neutral detection, auto range, data hold.
· Handheld Oscilloscope: 1 MHz bandwidth, 5 MSa/s, 400 V max, vertical sensitivity 10 mV/div–10 V/div. Ideal for precise circuit analysis.
· DDS Signal Generator: 13 waveforms, adjustable 0.1–3 V amplitude, up to 10 KHz. Supports waveform simulation and electronics testing.
· User-Friendly Design: 2.8” TFT color display, white/black themes, adjustable brightness, 3000 mAh rechargeable battery, Type-C charging, auto power-off.
· Convenient Function Dial: Fast mode switching and precise handling for professional field and automotive diagnostics.
Applications: Electronics labs, automotive repair, hobbyist projects, R&D testing.
Why do circuits behave differently at high frequencies? It’s not just about faster signals—it’s physics stepping in!
At low frequencies, wires and components act like we expect them to. But at higher frequencies, strange things happen:
🔹 Skin Effect – Current starts flowing only on the outer surface of wires, reducing efficiency.
🔹 Parasitic Elements – Tiny unintended capacitances and inductances inside components start interfering with the signal.
🔹 Transmission Line Effects – Wires act like their own circuits, causing reflections, delays, and signal distortion.
These effects explain why high-speed devices need careful design and why “simple” circuits can misbehave if frequency isn’t considered.
It’s fascinating how something as basic as a wire becomes a whole new problem when signals move faster!
#ElectronicsEngineering#HighFrequency#CircuitDesign#SignalIntegrity#TransmissionLines#PowerElectronics#EngineeringStudents#PracticalEngineering#TechForBeginners#STEMExplained
Project Manager. Dynamic Power Semiconductor Test Systems. Electrical Characterization of Power Semiconductor Devices, in-circuit, Known Good Die (KGD) wafer-level and bare die high-speed/high-temperature testers.
High-Density Integration and Double-Sided Cooling.
A compact PCB-on-DBC GaN half-bridge power module with DSC, low inductance, low thermal resistance, and integrated gate drivers has been proposed. Hybrid PCB and DBC technology is explored with multiple layer attachment as a cost-effective solution to achieve DSC and enhanced design flexibility.
Application Engineer at Wurth Electronics
1wGood news!