Eric Gibbs has it right enough.I need help. I want to know how much current and or voltage I need to apply to the base of a tip 102 and 107 transistor to get it to turn on. Thank you.
The max current occurring during motor startup (i.e. stall current) and/or during motor reversal.Need to know the motor current.
MOSFETs also have built in intrinsic collector-emitter substrate diodes, which can usually perform the flyback diode function when used in a bridge.I heard they had a built in flyback diode and I thought it would simplify the circuit not to have to include the diodes.
All MOSFETs have a built-in diode that can serve as a flyback diode in a bridge circuit.do you know any specific mosfets that have built in flyback diodes that would work for my project?
The MOSFET full-on Vgs voltage varies with the type.voltage and or current I would need to apply to the base of a transistor or a mosfet to turn it on.
A minor correction. When using an H-bridge, current to the load always passes through two transistors. Thus the overhead allowance would be 4V (or more) when using Darlingtons.Thanks. So if I still wanted to use the TIP 102 and 107 transistors for a 12V DC motor should I use a 14V power supply instead of a 12V because the transistors burn off of 2V? And would it be possible for me to use an Arduino to power the base of the transistor?
Is that the normal running current (most likely) or the stall/start-up current? Brushed DC motors typically have a stall current several times the running current, so the TIP102 would have to handle the stall current (~5A?) and the Arduino might well struggle to provide enough base current.It said the rated current is 1.1AMP.