Eric,

 I do a lot of small charger/DC converter stuff, I would be happy to help.

Bob Kondner
See:  www.indexdesigns.com


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Eric Kalgren
Sent: Wednesday, June 30, 2010 9:43 AM
To: [log in to unmask]
Subject: [TN] NTC - Solar Panels and small motors

Once upon a time, in the early 90's, I bought a pith helmet with a solar
powered fan attached to the front of it.  It was hands-down the coolest
hat on the block.

The small solar panel that powered the thing broke and I want to replace
it, but I don't know how much solar panel I need to run the motor.  I
know it's 3 VDC because it uses 2 X AA batteries as a back up supply,
but I don't know how much current I need to run the motor.

The old panel sat in a 2" X 2 1/2" pocket on top of the hat.  I've
Googled it and checked out a few options but nothing listed has the same
footprint.  And so I am punting to the TechNet to see if anyone might
have an idea of how to guesstimate the current draw of a small DC fan
without having an O-Scope handy.

I'll send a picture to Steve as well, just for kicks.

Thanks!

Eric Kalgren
Electrical Engineer
 
The Ferrite Co. Inc.
165 Ledge Street
Nashua, NH 03060
Phone 603-881-5234 X 153
Fax 603-881-5406
PRIVILEGED AND CONFIDENTIAL COMMUNICATION
This E-mail is covered by the Electronic Communications Privacy Act, 18
U. S. C." 2510-2521 and is legally privileged.  The information
contained herein is confidential and is intended only for the use of the
individual or entity named above.  If the reader of this message is not
the intended recipient, you are hereby notified that any dissemination,
distribution or copying of this communication is strictly prohibited.
If you have received this transmission in error, please immediately
notify the sender by telephone or via e-mail and delete the original
transmission including any attachments without reading or saving in any
manner




______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16
for additional information, or contact Keach Sasamori at [log in to unmask] or
847-615-7100 ext.2815
-----------------------------------------------------


______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------