Rechargeable lamp

Please can i get a circuit diagram for a simple rechargeable lamp.. Need it for my project, thanks... If it could come with the description on how to go about the construction, I'd really appreciate. Thanks.. Urgent please

by Jaypee_sneh
October 22, 2018

1 Answer

Answer by mikerogerswsm

This is a simple rechargeable lamp:

https://www.circuitlab.com/editor/#?id=qs92843dnkap

The Lipo will come with a suitable USB charger. Use this and switch the battery either to the charger or to the LED via a current limiting resistor. The resistor should limit the LED current to 20mA.

The charger supplied with the Lipo should take care of everything, it provides over-voltage protection, under-voltage protection, pre-charge and charge at a current appropriate to your chosen battery. Have a look at this to make sure you understand Lipo charging:

http://www.farnell.com/datasheets/77596.pdf

Construction should be on a vero board or similar.

+1 vote
by mikerogerswsm
October 22, 2018

Thank you.... Very much...

More comments please

by Jaypee_sneh
October 22, 2018

PS - suitable LED:

https://www.bitsbox.co.uk/index.php?main_page=product_info&cPath=172_173&products_id=1350

by mikerogerswsm
October 23, 2018

Your Answer

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

Log in Create an account


Go Ad-Free. Activate your CircuitLab membership. No more ads. Save unlimited circuits. Run unlimited simulations.

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!

About CircuitLab

CircuitLab is an in-browser schematic capture and circuit simulation software tool to help you rapidly design and analyze analog and digital electronics systems.