Anybody remember when cars had switches that did the work without 10 dozen little black boxes that only their designer, knew how worked? The engineers who made those cars must have been geniuses to make those cars work. I remember when heater blowers used resistors to control the blower and a relay wired directly to the power bus for the blower's high power setting.<br><br><b> Side note:</b> be advised, automotive environment is a very hostile place for electronics, especially in heater - A/C applications, I have seen functioning units smoke out a 30 amp breaker when the systems get old, likely due to dragging blower bearings, marginal (crimp) connections etc . . . I would advise using a high blower relay with your PWM controller when you want full power to operate the fan. Take this advice for what you think it's worth, it's backed up by 42 years of fixing cars.
If you do not believe in MAGIC, Consider how currency has value simply by printing it, and is then traded for real assets.
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Gold is the money of kings, silver is the money of gentlemen, barter is the money of peasants - but debt is the money of slaves
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There simply is no "Happy Spam" If you do it you will disappear from this forum.
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