Capacitor and lights.

So if I have a battery connected to a capacitor and then I add a light, where would I put the switch to release the electricity from the capacitor?

by laser_tag
November 18, 2012

Hmmmm, next to the capacitor? ... ;-)

Simulation starts by a diagram, no safety glasses needed.

Just do it and post what you have …

Regards, Sancho

by Sancho_P
November 18, 2012

@laser_tag,

What do you want the light to do?

Stay on when you switch it on?

Or turn on then fade out as the charge in the cap decays?

by signality
November 18, 2012

So this is how I though it should go.

https://www.circuitlab.com/circuit/7k5q3q/capacitor-and-light/#postsave_link_and_share

by laser_tag
November 18, 2012

Your link doesn't work. It sends us to:

Error 403: Forbidden

You have not made your circuit unlisted or public. Clicking on your user name:

https://www.circuitlab.com/user/laser_tag/

shows:

laser_tag's Public Circuits: laser_tag has no public circuits.

Please see:

https://www.circuitlab.com/docs/

and in particular:

https://www.circuitlab.com/blog/2012/06/07/unlisted-circuits-easier-sharing-of-schematics/

by signality
November 19, 2012

Sorry about that. Here is the link again. https://www.circuitlab.com/circuit/7k5q3q/capacitor-and-light/

by laser_tag
November 19, 2012

Pardon?

Your switch just shorts out the battery.

It might help you to write down a short specification of exactly what you want to achieve and then try drawing it.

Then post both the spec and the circuit.

See the section on "A design process" in:

https://www.circuitlab.com/forums/support/topic/58b454g6/op-amp-output-different-than-real-world/#comment_2195

by signality
November 20, 2012

All I want to do is add a switch somewhere so when it is closed the light will light up and slowly fade out because of the capacitor.

by laser_tag
November 20, 2012

by signality
November 21, 2012

Thank you.

by laser_tag
November 21, 2012

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