Yes. But transistor drive depends on what yiou use for top and bottom devices,
NPN, PNP, both.....
And dont forget you need deadtime switching, eg. no vertical par simultaneously on.
www.allaboutcircuits.com
Regards, Dana.
NPN, PNP, both.....
And dont forget you need deadtime switching, eg. no vertical par simultaneously on.
H-bridge DC Motor Control Using Complementary PWM, Shoot-through, and Dead-time - Technical Articles
Learn about the role of non-overlapping or complementary pulse width modulation (PMW) in DC motor control using an h-bridge circuit, taking into consideration PWM shoot-through and dead-time PWM.
Regards, Dana.
Last edited:
Thanks.
As I trace the logic of the wires of my drawing, the top transistor actually doesnt turn on until
the bottom transistor does otherwise it doesnt make it to arduino ground, so the bottom one
turns on a nanosecond before the top one does, but its quite unmeasurable time delay.
Your not Garth from Wayne's World are you? That would be extremely trippy, and I'm starting to go crazy.
As I trace the logic of the wires of my drawing, the top transistor actually doesnt turn on until
the bottom transistor does otherwise it doesnt make it to arduino ground, so the bottom one
turns on a nanosecond before the top one does, but its quite unmeasurable time delay.
Your not Garth from Wayne's World are you? That would be extremely trippy, and I'm starting to go crazy.
You do not want top and bottom transistor in same leg to turn on at same
time, thats key. Otherwise you have a dead short on the power supply to
ground. Thats usually taken care of in embedded processor PWM settings
or in external driver chip.
Most scopes can measure that time delay.
No on garth
Regards, Dana.
time, thats key. Otherwise you have a dead short on the power supply to
ground. Thats usually taken care of in embedded processor PWM settings
or in external driver chip.
Most scopes can measure that time delay.
No on garth
Regards, Dana.
No, the Arduino output by itself is not sufficient.
Yes, you can "set em off" with a 30k resistor, but that's when the emitter is at ground potential.
The base-resistor value is not a factor here, it's the base-emitter voltage that's critical not just the base voltage, so they won't "fire" from the Arduino low output voltage.
So if the top bridge transistor is at 12V, then the base voltage must be at 12V to turn it off, and within 0.7V of that to turn it on.
And to control the bottom transistor, its base must be a -12V.
Since your understanding of transistors seems to be a little fuzzy, methinks you need to read a little more about how transistors work.
Low cost H Bridge that will interface to Arduino -
Ratings :
microcontrollerslab.com
Regards, Dana,
L298N Motor Drive Controller Board Module Dual H Bridge DC for Arduino | eBay
Find many great new & used options and get the best deals for L298N Motor Drive Controller Board Module Dual H Bridge DC for Arduino at the best online prices at eBay! Free shipping for many products!
www.ebay.com
Ratings :
L298N motor driver IC pinouts, features and Example
L298N motor driver IC pinouts, featues and examples how to use motor driver IC to control direction and speed of dc motor
microcontrollerslab.com
Regards, Dana,
Last edited:
that chip is in spec with what I need! and its 3 american dollars with what i was planning to buy for it other than the wire was the 4 transistors, they were 1.40 dollars each, so it was 5.60 dollars australian to buy, basicly the same f u dont take into account the wire, not sure if it would heat up more or less.
I think I need a resistor on the arduino ground too, just so i dont overdrive the transistor bases, but more like dont overdrive the arduino internals.
I think I need a resistor on the arduino ground too, just so i dont overdrive the transistor bases, but more like dont overdrive the arduino internals.
Last edited:
Similar threads
