Subject:
|
Re: Solar cells and caps: lego part #s
|
Newsgroups:
|
lugnet.robotics
|
Date:
|
Tue, 27 Mar 2001 17:13:19 GMT
|
Reply-To:
|
micahx@kih%spamcake%.net
|
Viewed:
|
395 times
|
| |
|
|
John Barnes wrote:
>
> This whole Lego capacitor thing strikes me as somewhat intriguing.
>
> The super-caps, which are doubtless used, absolutely cannot be charged
> backwards, they have to have the correct polarity. And all the Lego
> electrical "stuff" like the RCX sensors, have been carefully designed to
> be insensitive to polarity. So;
>
> I assume the Lego capacitor has some kind of bridge rectifier in it to
> ensure that the capacitor component itself is charged with the correct
> polarity. So;
>
> How do they get the power back out? Is there a seperate in and out
> connector? Is there some very clever circuitry which "remebers" which
> way the inputs were connected so it will discharge back out of the
> input terminals with the correct output polarity?
>
> Maybe someone who actually owns one of these could fill in the blanks.
>
> Inquiring minds .....
>
> JB
The capacitor is very much polarity-sensitive. It has +/- polarity
indicators on either side of the standard 2x2 9V terminal, as does the
solar cell, and it will not work if the polarity is reversed.
--
Regards
Micah J. Mabelitini - LUGNET #918
accutron@kih.net
BrickDreams - http://www.users.kih.net/~micahx/brickdreams/
RCXbug - http://www.users.kih.net/~micahx/rcxbug/
|
|
Message is in Reply To:
 | | Solar cells and caps: lego part #s
|
| This whole Lego capacitor thing strikes me as somewhat intriguing. The super-caps, which are doubtless used, absolutely cannot be charged backwards, they have to have the correct polarity. And all the Lego electrical "stuff" like the RCX sensors, (...) (23 years ago, 27-Mar-01, to lugnet.robotics)
|
15 Messages in This Thread:
 
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
