Martin Shoebridge Posted February 9, 2008 Share Posted February 9, 2008 I read a good article about this a while ago. Can't remember where, but it described a 2 stagecontrol . I think it was a construction project rather than a commercial unit. Can anyone point me in the right direction? Quote Link to comment Share on other sites More sharing options...
Former Member Posted February 9, 2008 Share Posted February 9, 2008 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Martin Shoebridge Posted February 9, 2008 Author Share Posted February 9, 2008 Further info....... this article described real time monitoring of the plug current, and how it could be reduced as it's temperature increased. Yes a sophisticated 'keep alive '. Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted February 9, 2008 Share Posted February 9, 2008 Such devices do exist indeed. They sense the resistance of the plug element according to its heat, and apply the required current accordingly. I think I may have a link to one at the end of this post, but be warned these particular devices are not cheap, and IMO unnecessarily complicated. However, firstly do NOT use 2 x nicad cells in series to give 2.4 volts. Plugs are designed to run on 1.5V maximum, and will be perfectly happy on a single, decent capacity nickel cell. Using two cells will burn the element out very quickly. In the dark old days before ICs, microswitches were used as onboard glow switches, but are notoriously difficult to set right, do not offer good resistance to vibration and fuel and muck, and electronic switches are the modern answer. intelligent glo I hobby build a fully auto throttle sensing opto-isolated device and have supplied many forum friends over the last few years. Please PM me via the email button on my profile if you want any more info, dont want to get commercial on the forum now do we ! Quote Link to comment Share on other sites More sharing options...
Former Member Posted February 10, 2008 Share Posted February 10, 2008 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted February 10, 2008 Share Posted February 10, 2008 Yes I remember those too Eric...2V absolute max is OK when used like this, 'cos the lead from the battery to plug introduces sufficient resistance to cause a small voltage drop, but with an onboard system, lead length is short. Quote Link to comment Share on other sites More sharing options...
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