I was lazy with the drawing. But they'd go where the batteries are. what number op amps and mosfets should I look for? I'm planning on going to Fry's later today.
This is kind of unrelated but I'm completely lost on how exactly a mosfet is able to supply more current to drain than it receives from source, can someone explain the physics?
This is kind of unrelated but I'm completely lost on how exactly a mosfet is able to supply more current to drain than it receives from source, can someone explain the physics?
Can an nte948 op amp output 500mA? If it can I think Everything will work fine... I guess not, data sheet says only 25 for a short circuit . If I wire all 4 outputs together does that value add linearly to 100?
Look at Figure 9, "Bidirectional DC Motor Control with mP Compatible Inputs" on page 5. Note that Vs1/2 can be simply a resistive voltage divider across your logic power supply; and that your Vs2, the opamp supply voltage, must be greater than or equal to the logic supply voltage; otherwise the inputs might be damaged.
This opamp is just what you need, and it's widely used in the automotive industry. You need to supply the L272 with about 1.5v more than your motor requires, as the L272 can't output within about 0.75v of either power "rail".