Hello there, I'm so rusty at this stuff I squeak. Quick into, I graduated from a CET about 20 years ago. Back then, I could build circuits in my sleep. Since then, I've moved onto industrial instrumentation, and my circuit level electronics knowledge is long gone.
The project I need help with is a smoker temperature controller for my Primo XL. The simplest and most well known option is a small fan (around 10 cfm) to provide the intake draft, with feedback and control provided by a PID temperature controller.
Generally, the 12 Vdc fan is run in the on/off mode, but this presents a few issues. I would prefer a linear control, but that has problems as well. Is it possible to design an amplifier that will take the output of a PID (1-5, or 2.4-12 vdc), and allow me to set the amplifier output to the fan at an adjustable lower voltage (because it probably won't start at 2.4 volts) up to the maximum 12 vdc?
The project I need help with is a smoker temperature controller for my Primo XL. The simplest and most well known option is a small fan (around 10 cfm) to provide the intake draft, with feedback and control provided by a PID temperature controller.
Generally, the 12 Vdc fan is run in the on/off mode, but this presents a few issues. I would prefer a linear control, but that has problems as well. Is it possible to design an amplifier that will take the output of a PID (1-5, or 2.4-12 vdc), and allow me to set the amplifier output to the fan at an adjustable lower voltage (because it probably won't start at 2.4 volts) up to the maximum 12 vdc?