FireAce
New Member
Hey fellows, I need some help designing a circuit. Its kind of unusual, but being an N scale train modeler, I always need unusual circuits.
I have a "Diesel Engine" sound circuit I built that generates train engine sound depending on track voltage. Works fine, but I dont have an "engine start" sound.
I found if I slowly increase the power to this circuit, from 0v to its full 12v using a pot, it sounds like the engine and generator winding up. BUT, I would like to have it do this automatically when I hit the "Engine Start" switch on the control board.
A TIP31c comes to mind, as I found its output is sensitive to whats applied to the gate.
Any ideas?
I have a "Diesel Engine" sound circuit I built that generates train engine sound depending on track voltage. Works fine, but I dont have an "engine start" sound.
I found if I slowly increase the power to this circuit, from 0v to its full 12v using a pot, it sounds like the engine and generator winding up. BUT, I would like to have it do this automatically when I hit the "Engine Start" switch on the control board.
A TIP31c comes to mind, as I found its output is sensitive to whats applied to the gate.
Any ideas?