Nettet29. feb. 2024 · 2. How do LEDs Work? 3. Are there benefits to replacing traditional lamps with LEDs? 4. How much money can you save when you convert to LED? 5. Can you use dimmer controls with LED lights? 6. Do LED bulbs have any hazardous materials in them such as Mercury? 7. What color temperatures are available with LED bulbs? 8. Nettet16. mar. 2024 · We need to create a 2 LED flasher. We can choose a lot of circuits. Look here: For example 4 circuits. Learn Dual LED flasher using transistors. See: 555 LED flasher. Using CMOS Digital-ICs, CD4011, CD4049. LED Blinking OP-AMP LM324 or LM741. MOSFET blinking circuit.
100+ LED Multiple Choice Questions with Answers
NettetWe now need to check the power rating of the resistor when the flasher is on. Power is given by P = V 2 R so let's say we want the LEDs very dim when off so we add 1k in parallel and we'll have 58 V across the resistor when on. P = V 2 R = 60 2 1000 = 3.6 W. Obviously a 0.25 W resistor isn't going to be good enough. Nettet24. jan. 2024 · What are you most proud of from this work and why? Who are your closest competitors? What do you know about the history of [insert something relevant]? . Materials & Methods What methods did you use and why? Explain [insert technique] and how you got from starting product to final product? What alternative methods could you … 3c快消品
Top 50 Possible PhD Viva Questions - iLovePhD
Nettet4. apr. 2024 · When you turn the handle or flick the switch to diminish the light, you are arranging for the circuit to kill the light on and at a frequency so fast that you do not … Nettet22. nov. 2024 · Planck’s Constant Experiment Viva Quiz Tuesday, November 22nd, 2024 by Dr Sushil Kumar To determine the Planck’s constant, in this experiment we use 3-4 different colors light emitting diodes. We observe the stopping potential of each LED and plot it with the frequency or wavelength to calculate … Read more Nettet13. sep. 2024 · Frequently Asked Questions About LED Follower Circuits How can I force a five-second delay in a LED Follower Circuit? You will need to integrate an astable … 3c影響孩子