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Cluster inverter reverse engineering project
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<blockquote data-quote="mwolson" data-source="post: 16802195" data-attributes="member: 16006"><p>In the SVTP thread that tells how to use a SpeedHut inverter to replace an OEM Ford inverter, people have said that their clusters are dimmer after the replacement.</p><p></p><p>imacgyver sent me the replacement SpeedHut inverter yesterday and this one does work. I had also bought an EL panel from a company called GlowHut so I would have a panel I can use for experiments, so I put the stock OEM Ford inverter and the SpeedHut inverter on it so I could compare the results to see if I could explain why the SpeedHut inverter is dimmer. Here are the results:</p><p></p><p>This photo shows the Ford OEM inverter driving the GlowHut panel:</p><p>[ATTACH=full]1756333[/ATTACH]</p><p></p><p>Here is the SpeedHut inverter driving the GlowHut panel:</p><p>[ATTACH=full]1756335[/ATTACH]</p><p></p><p>As you can see, the OEM inverter drives the panel to 295V P-P and the SpeedHut inverter drives the panel to 226V, a difference of almost 70V. This explains why clusters with the SpeedHut inverter are dimmer than ones with the OEM Ford inverters.</p><p></p><p>I then cut off the dimmer pot from the SpeedHut inverter to see how much impact getting infinite resistance on the dimmer pot would get us. That got the SpeedHut voltage up to 228V, just a 2v improvement.</p><p></p><p>Thought you might find this information interesting.</p></blockquote><p></p>
[QUOTE="mwolson, post: 16802195, member: 16006"] In the SVTP thread that tells how to use a SpeedHut inverter to replace an OEM Ford inverter, people have said that their clusters are dimmer after the replacement. imacgyver sent me the replacement SpeedHut inverter yesterday and this one does work. I had also bought an EL panel from a company called GlowHut so I would have a panel I can use for experiments, so I put the stock OEM Ford inverter and the SpeedHut inverter on it so I could compare the results to see if I could explain why the SpeedHut inverter is dimmer. Here are the results: This photo shows the Ford OEM inverter driving the GlowHut panel: [ATTACH type="full"]1756333[/ATTACH] Here is the SpeedHut inverter driving the GlowHut panel: [ATTACH type="full"]1756335[/ATTACH] As you can see, the OEM inverter drives the panel to 295V P-P and the SpeedHut inverter drives the panel to 226V, a difference of almost 70V. This explains why clusters with the SpeedHut inverter are dimmer than ones with the OEM Ford inverters. I then cut off the dimmer pot from the SpeedHut inverter to see how much impact getting infinite resistance on the dimmer pot would get us. That got the SpeedHut voltage up to 228V, just a 2v improvement. Thought you might find this information interesting. [/QUOTE]
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