Post by thread:[PIC]:[OT]: Thin Film Heaters

I hope I got these prefixes right on the subject line. Our 16F873 based controller (there's the PIC tie in) is attached to a dollar bill acceptor. The dollar bill acceptor has a tendency to freeze up (exposed somewhat to the elements) during the cold northern winter. Our customer in the past has used a 40 watt light bulb to keep the interior toasty to prevent icing and I am trying to locate a source of thin film heaters that operate in the 24 VDC range. Any sources? Thanks, Howard Howard McGinnis spam_OUThmcginniTakeThisOuTdigital.net Electronic Visions, Inc. 1650 Barrett Drive Rockledge FL 32955 (321) 632-7530 http://ddi.digital.net/~hmcginni .....mcginnisKILLspam@spam@e-visions.com -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.

Try Minco products or Watlow. robertf ----- Original Message ----- From: Howard McGinnis <hmcginniKILLspamDIGITAL.NET> To: <.....PICLISTKILLspam.....MITVMA.MIT.EDU> Sent: Tuesday, August 08, 2000 11:37 AM Subject: [PIC]:[OT]: Thin Film Heaters {Quote hidden}> I hope I got these prefixes right on the subject line. > > Our 16F873 based controller (there's the PIC tie in) is attached to a > dollar bill acceptor. The dollar bill acceptor has a tendency to freeze up > (exposed somewhat to the elements) during the cold northern winter. Our > customer in the past has used a 40 watt light bulb to keep the interior > toasty to prevent icing and I am trying to locate a source of thin film > heaters that operate in the 24 VDC range. > > Any sources? > > Thanks, > Howard > Howard McGinnis > EraseMEhmcginnispam_OUTTakeThisOuTdigital.net > Electronic Visions, Inc. > 1650 Barrett Drive > Rockledge FL 32955 > (321) 632-7530 > http://ddi.digital.net/~hmcginni > mcginnisspam_OUTe-visions.com > > -- > http://www.piclist.com hint: The PICList is archived three different > ways. See http://www.piclist.com/#archives for details. > -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.

You might consider a PTC thermistor which would act as a self regulating heater... Harold On Tue, 8 Aug 2000 11:37:09 -0400 Howard McGinnis <@spam@hmcginniKILLspamDIGITAL.NET> writes: {Quote hidden}> I hope I got these prefixes right on the subject line. > > Our 16F873 based controller (there's the PIC tie in) is attached to > a > dollar bill acceptor. The dollar bill acceptor has a tendency to > freeze up > (exposed somewhat to the elements) during the cold northern winter. > Our > customer in the past has used a 40 watt light bulb to keep the > interior > toasty to prevent icing and I am trying to locate a source of thin > film > heaters that operate in the 24 VDC range. > > Any sources? > FCC Rules Online at http://hallikainen.com/FccRules Lighting control for theatre and television at http://www.dovesystems.com ________________________________________________________________ YOU'RE PAYING TOO MUCH FOR THE INTERNET! Juno now offers FREE Internet Access! Try it today - there's no risk! For your FREE software, visit: dl.http://www.juno.com/get/tagj. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.

I'm curious. Why not a standard power resistor? Does thin film (or thick film for all I know) have better pricing or packaging? -- Rich Howard McGinnis wrote: {Quote hidden}> > I hope I got these prefixes right on the subject line. > > Our 16F873 based controller (there's the PIC tie in) is attached to a > dollar bill acceptor. The dollar bill acceptor has a tendency to freeze up > (exposed somewhat to the elements) during the cold northern winter. Our > customer in the past has used a 40 watt light bulb to keep the interior > toasty to prevent icing and I am trying to locate a source of thin film > heaters that operate in the 24 VDC range. > > Any sources? > > Thanks, > Howard > Howard McGinnis > KILLspamhmcginniKILLspamdigital.net > Electronic Visions, Inc. > 1650 Barrett Drive > Rockledge FL 32955 > (321) 632-7530 > http://ddi.digital.net/~hmcginni > RemoveMEmcginnisTakeThisOuTe-visions.com > > -- > http://www.piclist.com hint: The PICList is archived three different > ways. See http://www.piclist.com/#archives for details. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.

>thin film heater imho a bolt-on 47R 17W resistor or two should do fine. You could use it in series with a 50 degree C self-resetting thermal protection element (or polyfuse). The thin film heater may be more expensive than this. hope this helps, Peter -- http://www.piclist.com hint: To leave the PICList spamBeGonepiclist-unsubscribe-requestspamBeGonemitvma.mit.edu>