Electronics Questions & Answers last updated 7:09:00 AM PST

Questions hdd	asked by cloudff7 0 answers · 0 comments 21 hours, 26 minutes ago
electrolytic capacitor	asked by cloudff7 6 answers · 3 comments 2 days, 7 hours ago
How to make my push button switch louder?	asked by mattnickle12 0 answers · 0 comments January 25, 2026
Question tantalum capacitors	asked by cloudff7 0 answers · 0 comments January 25, 2026
LED not on with 5V supply and resistor	asked by BlackScreen 0 answers · 0 comments January 23, 2026
MOSFET linear amplification	asked by nadakhodery 0 answers · 0 comments January 17, 2026
Where can I find electronic circuits classified by “difficulty level”?	asked by AlissonOliveira17 0 answers · 0 comments January 13, 2026
splitting graphs	asked by gauthamm 0 answers · 0 comments December 26, 2025
Vacuum tubes	asked by artist5 0 answers · 0 comments December 09, 2025
counter	asked by cis-eng 0 answers · 0 comments December 08, 2025
Relay With Custom Trigger Voltage	asked by JamesRolfe 0 answers · 0 comments December 04, 2025
How did your electronics journey start?	asked by LuisRowe 0 answers · 0 comments November 23, 2025
Hopefully a Simple Ask	asked by ROgden 0 answers · 1 comment November 06, 2025
temp-monitoring board	asked by Jordan22xx 0 answers · 0 comments November 02, 2025
"error building graph: non-finite value"	asked by KnowHowe2 1 answer · 0 comments October 31, 2025
AC circuit simulation not working	asked by Bleahy 1 answer · 2 comments October 29, 2025
Response Curve by Frequency Domain Simulation	asked by Kurtus 0 answers · 5 comments October 26, 2025
New Components	asked by jrusso381 0 answers · 0 comments October 25, 2025
Photo Cell LED Night Light Burns Resistor	asked by Clarkson 0 answers · 1 comment October 21, 2025
Question HDD 2.5"	asked by cloudff7 0 answers · 1 comment October 21, 2025
Need help with connecting a switch	asked by Barry21969 0 answers · 1 comment October 15, 2025
Virtual ground	asked by ChuchoGar 3 answers · 2 comments September 22, 2025
CSV signal generator	asked by johnbb17 2 answers · 1 comment September 19, 2025
Seeking Help with Microcontroller-Based Power Supply Design SOLVED	asked by xiaochun_team 1 answer · 0 comments September 07, 2025
Best Step-Down Transformer for Electronics?	asked by owen000821 1 answer · 0 comments September 07, 2025

Search Questions & Answers

---

Ask a Question

Anyone can ask a question.

Did you already search (see above) to see if a similar question has already been answered? If you can't find the answer, you may ask a question.

---

About This Site

CircuitLab's Q&A site is a FREE questions and answers forum for electronics and electrical engineering students, hobbyists, and professionals.

We encourage you to use our built-in schematic & simulation software to add more detail to your questions and answers.

Acceptable Questions:

• Concept or theory questions
• Practical engineering questions
• “Homework” questions
• Software/hardware intersection
• Best practices
• Design choices & component selection
• Troubleshooting

Unacceptable Questions:

• Non-English language content
• Non-question discussion
• Non-electronics questions
• Vendor-specific topics
• Pure software questions
• CircuitLab software support

Please respect that there are both seasoned experts and total newbies here: please be nice, be constructive, and be specific!

New @ CircuitLab
DUMPLINGZ saved circuit: "AND 351 BJT L1" 22 minutes ago
GamutPeak saved circuit: "Autosave 2026-02-05T16:46:12.505Z"
cloudff7 asked: "Questions hdd" 21 hours ago
Kurtus saved circuit: "2 Dual-Polarity Power-Supplies"
grebsrof saved circuit: "bärplansbåt-elschema"
leticiawallred answered: "electrolytic capacitor"
mattnickle12 asked: "How to make my push button switch..."
BlackScreen asked: "LED not on with 5V supply and..."
dg2 replied to discussion: "Can't drag components to move them"
jason.wyenberg started discussion: "Can't click anything"
nadakhodery asked: "MOSFET linear amplification"
boliver80 replied to discussion: "Cancel Membership"
alanwill answered: "electrolytic capacitor"
gukabizax answered: "electrolytic capacitor"
wellos answered: "electrolytic capacitor"
JimDobson started discussion: "Help with my first Simulation"
vanderghast commented on question: "Hopefully a Simple Ask"
Kurtus commented on question: "Response Curve by Frequency Domain..."
jarrodjaiz commented on question: "Photo Cell LED Night Light Burns..."
genecampos commented on question: "Question HDD 2.5""
CircuitLab Blog: "Live DC Simulation!"
CircuitLab Blog: "Digital Adders and Wider Muxes"