Electronics Questions & Answers ← browse Q&As

Uv led flashlight

---

1 Answer

Answer by mikerogerswsm

---

Your Answer

You must log in or create an account (free!) to answer a question.

Log in Create an account

---

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
jshuggins saved circuit: "AM Modulator" 2 hours ago
pierre-luc.rompre saved circuit: "exercices Diodes rectificatrices"
MichaelHarsh replied to discussion: "FFT Spectrum"
khlaed saved circuit: "Abdullah Wahid"
drhqnril saved circuit: "moog power"
ACCSKraig started discussion: "wire icon"
Koen_Van_de_moortel started discussion: "Symbols badly missing"
kwlyon replied to discussion: "I seem to have trouble with..."
jonathanzam answered: "Ohmmeter needed"
ramonhamil answered: "The Drag and Drop not working on..."
natastro answered: "Ohmmeter needed"
kwlyon asked: "I am on that peak of the Dunning..."
Matti428493 asked: "Ohmmeter needed"
abitofhelp asked: "BJT Base-Emitter Reverse Breakdown..."
Edmore asked: "pushbutton digital input signal..."
ErnestThornton answered: "triggered momentary switch"
Hismandent commented on question: "9V to 5V conversion problems"
vanderghast commented on question: "9V to 5V conversion problems"
detailsizzling commented on an answer to: "How to Design a Circuit for..."
krokoi commented on question: "how to represent a symetrical..."
CircuitLab Blog: "Live DC Simulation!"
CircuitLab Blog: "Digital Adders and Wider Muxes"