Questions tagged [design]
The process of creating electronic products, including components and end-user devices.
1,273 questions
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Designing Supercapacitor
We're doing a biowaste based supercapacitor as our last project. I couldn't find anywhere methods of designing supercapacitors (having target capacitance based on certain measurements like specific ...
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Single ended supply Class AB push-pull amplifier
I have a basic Class AB push-pull amplifier that uses diode biasing for the transistors. The circuit operates from a single-ended supply (e.g., +VCC and ground), and the input is a sinusoidal signal ...
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Noise Reduction
I know how important it is to use capacitors to reduce noise in a DC circuit. I use them to ensure Vs is clean for any ...
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How do you find self inductance for common conductive geometries?
I was trying to model a surface mount resistor (say an 0603 package). Below, is a simple equivalent circuit which shows the stray inductance, the resistance itself and the stray capacitance between ...
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Traces to through hole Proteus
I am a new member here and very new to PCB design.
I am trying to design a pcb to go between my amateur radio and external amplifiers. I have a board layout in Proteus,but having trouble getting ...
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Changing a contactor controlled heater circuit to a silicon-controlled rectifier controlled heater circuit
The original design (BEFORE) controls a heater bank with the controller switch S5. The system is designed to maintain a tank temperature within a narrow range and turn off above the range and on below ...
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Is overvoltage possible in a grid with only rotating generators?
On the 28th of April 2025 a major blackout occurred in Spain and Portugal.
The European transmission grid operators provided an analysis report describing what happened that day without identifying ...
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Shunt Resistor PCB Design Comparison Questions
Pad A has a direct PCB copper connection from the pad to the adjacent 16v power plane and a thru-hole 5 mOhm 600 mW resistor.
Pad B has your standard SMD shunt resistor, 5 mOhm, 1 W, 1206 size, ...
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How can I add a 470 nm SMD LED with proper current control to a small board that already includes a camera?
I’m building a compact setup for my project (around 21mm x 17mm) that uses a board with a camera (preferably built in) and need to integrate a specific 470 nm surface mounted LED that I can turn on/...
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Cascode current mirror topology vs same topology but different biasing
Why is this cascoded current mirror topology with this specific bias network has higher output resistance than the normal cascode configuration and thus higher gain
The topology I'm talking about:
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Designing a class AB power amplifier using BJT
I want to design a power amplifier using BJT. My instructor has designed one for himself, but I have some issues in understanding that topic.
The problem is to generate \$0.5W\$ across a speaker of ...
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P channel MOSFETs in circuit are turned off but I see 1.5-4.5 V Drain pin - GND of MOSFETs. What is the problem?
I am trying make an electronic circuit. There is a P channel MOSFET (DMPH6050SK3) controlled with an NPN BJT (BCP56-16). If I try to control 3.3 Vbase for NPN transistor it is sussesfully. I can see 9 ...
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Struggling to understand the step response of a parallel RC circuit in a Schmitt Trigger-based sawtooth oscillator
everyone!
Second-year ECE student here working on building a basic analog synth, and starting by throwing together a Schmitt-Trigger-based VCO.
One thing I'm struggling to understand is the transient ...
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What are best practices &or optimal physical and connection layout for a 18650 battery pack? [closed]
I (think?) I want to build a 4S48P pack that fits in a BCI 47 form factor.
At first glance, this seems to be two layers of 8 by 12 cells?
But this question is not necessarily just for this project.
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Designing a power amplifier using BJT
I have a question about designing a power amplifier, and I don't know how to match the different stages together!
Question: Replace the first stage by folded-cascode and any current source by current ...
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