Hello folks. Brand new to the forum. I have an AA in Electronics Engineering from ITT Tech in 2015 and even though I don't work in engineering I've been recently getting back into a few projects I've put on the back burner due to life catching up to me for the last several years.
I have been working on ways to update and modernize some of the electrical in late 80s & early 90s era Toyota trucks. Currently I'm trying to find a way to better control the speed of the cabin blower motor using a PWM that can support 30A capacity and would eliminate the current limiting resistor (which in the OEM design is used to control the fans speed) but still allow for use of the factory switch to control the PWM for the five desired settings (off, 25%, 50%, 75% and 100%). Its been several years since I finished my electronics engineering course, and given I didn't go beyond an AA, more advanced circuit design is still very much a challenge. I also could not (still can't) write code to save my life, so unless I can develop a PWM that can be built without having to manually program a controller, I fear I may be out of luck. I'm hoping someone can steer me in the right direction or provide some guidance to help me get started on figuring out a design that could be made to work.
Any assistance would be greatly appreciated!
I have been working on ways to update and modernize some of the electrical in late 80s & early 90s era Toyota trucks. Currently I'm trying to find a way to better control the speed of the cabin blower motor using a PWM that can support 30A capacity and would eliminate the current limiting resistor (which in the OEM design is used to control the fans speed) but still allow for use of the factory switch to control the PWM for the five desired settings (off, 25%, 50%, 75% and 100%). Its been several years since I finished my electronics engineering course, and given I didn't go beyond an AA, more advanced circuit design is still very much a challenge. I also could not (still can't) write code to save my life, so unless I can develop a PWM that can be built without having to manually program a controller, I fear I may be out of luck. I'm hoping someone can steer me in the right direction or provide some guidance to help me get started on figuring out a design that could be made to work.
Any assistance would be greatly appreciated!