Hello all, I am in the process of finishing up a draft Instructable for creating an automatic temperature controller for a BBQ smoker. Could some of you take a look at the schematic and see if you notice anything that might be wrong? I'd welcome any other input as well.
There is no supply decoupling for the IC.
Can a stereo jack handle the current you want to control?
With only 6mA base current the TIP41C collector current may be as low as 90mA.
There are much better transistors than TIP41C (higher gain, lower saturation voltage).
How can I figure this out? Is this the kind of thing that would be on a spec sheet for a jack? I've been going with the "it works so it's fine" methodology.
With only 6mA base current the TIP41C collector current may be as low as 90mA.
There are much better transistors than TIP41C (higher gain, lower saturation voltage).