@TheError404 Thats where I started. But then I had to make sure the gates always got greater than 10v if someone ran 12v and the battery level was low, or there were sags in the power. Then I had to deal with the back emf a large motor could put out, Then I wanted the capability to control with a hall effect or a pot, then I wanted soft start, then I wanted 48v capability without the use of a regulator chip. Yup, easy when you start, its when you add features that it gets more complex ;)
@habitbraker21 I won't agree. Steper motors does stop, but not DC motors... If shorter duty cycle is applied DC motor just has less power, slower rpm but it doesn't stop.
That's right, I do have a controller like that, it doesn't use an encoder though, it measures the back EMF between the PWM pulses. Of course this is a good way to self regulate the speed, but, because it takes a few microseconds to take the average sample from the back EMF, you never get true 100%, you get like 99%.
The controller was nothing special. Power stage is a LM7812 (? I think)with some basic filtering. The pwm is generated by a LM358 which takes power through the source supply (via a 14v zener and BD1XX) to make sure the gates always have over 10V. Its really nothing special, I'll try to find the schematic and post it. But the mosfets were driven straight from the Op Amp. It was functional and worked well, but it wasn't very optimized. Clamping diode was a 60A shottky
This controller design was ultimately scrapped. There were 2 problems with it, 1) the regulator had trouble with PSU's that were littered with peaks and sags. 2) The mosfets were driven directly from an op-amp. So they spent too much time in the linear region (between on and off states). Rather than fix the problems, it was easier just to learn from the mistakes from the past and design a new one.
@motiondynamics2010 Hello, mate! I was thinking about to buy one of these motors. The specification that I have is "Bosch GPA 24v 750W motor". I believe that this one is the same of your. Can you tell me if this one is good? Well, I mean... It can be used on a Electric Bicycle project? And I liked your control too. It is eficient? I searched it by the "Motion Dynamic" name and I found the to buy it. But, if i purchase one 75amp model, it can control two 750w motors?
How do you drive the mosfets? I use the same irfp4321 in a motordriver project but i don't get them work very well. Or may you send me the schematic? Thank you;)
Hey, i am beginner on the electronical. I want ask you, would you like explain to me how many diameter of your cable ?? so is it possible 50 Ampere flow on your cable ??. thanks for your attention. :)
you can use arduino for program of that and use IF540N mosfet or highest amperes and voltage mosfet for that, thats the best idea for PWM motor controller
hola tendras un diagrama para adaptarseloa una moto electrica de 24 voltios dc?? saludos de venezuela!!hello adaptarseloa will have a diagram for an electric scooter 24 volt dc?? Greetings from Venezuela!
hola como estas me puedes enviar el diagrama soy de venezuela tengo una moto que le compre a mi hijo electrica china y fui estafado porque le duro un dia sera que me puedes ayuadar a sustituir el diagrama tiene un motor de 24v dc y quisiera saber si me sirve tu proyecto gracias espero una resuesta tuya y agradecido!!
Os veo frecuentemente pero ahora agradeceria que me ayudarais,necesitaria un esquema electronico para un motor de corriente continua de 12 a 24 V de hasta 30 Amp.y 500W. Agradeciendo de ante mano vuestra ayuda.
hello how are you can send me the diagram'm from Venezuela I have a bike I bought for my son and I was scammed Chinese power because he lasted one day I can be a substitute ayuadar diagram has a 24V DC motor and I wonder if your project serves me thank you and I hope one adapting such grateful! truenoymagneto 1 second ago.
@davemaster99 1.5v Led voltage reference to the base of the BDX37
@TheError404 Thats where I started. But then I had to make sure the gates always got greater than 10v if someone ran 12v and the battery level was low, or there were sags in the power. Then I had to deal with the back emf a large motor could put out, Then I wanted the capability to control with a hall effect or a pot, then I wanted soft start, then I wanted 48v capability without the use of a regulator chip. Yup, easy when you start, its when you add features that it gets more complex ;)
really very well speed control
Another great video I wonder if you are making a dual motor driver remote control app
@habitbraker21 I won't agree. Steper motors does stop, but not DC motors... If shorter duty cycle is applied DC motor just has less power, slower rpm but it doesn't stop.
the controller can be viewed online, just search for motion dynamics and speed control.
That's right, I do have a controller like that, it doesn't use an encoder though, it measures the back EMF between the PWM pulses. Of course this is a good way to self regulate the speed, but, because it takes a few microseconds to take the average sample from the back EMF, you never get true 100%, you get like 99%.
@habitbraker21 So then you need to make longer duty cycle until you have rpm that suits your needs under a certain load. I see no problem here...
The controller was nothing special. Power stage is a LM7812 (? I think)with some basic filtering. The pwm is generated by a LM358 which takes power through the source supply (via a 14v zener and BD1XX) to make sure the gates always have over 10V. Its really nothing special, I'll try to find the schematic and post it. But the mosfets were driven straight from the Op Amp. It was functional and worked well, but it wasn't very optimized. Clamping diode was a 60A shottky
Nice, it's easy to make a controller like yours, 555 timer and few mosfets
This controller design was ultimately scrapped. There were 2 problems with it, 1) the regulator had trouble with PSU's that were littered with peaks and sags. 2) The mosfets were driven directly from an op-amp. So they spent too much time in the linear region (between on and off states). Rather than fix the problems, it was easier just to learn from the mistakes from the past and design a new one.
How to get this speed controller? Or how can i make this type of low voltage input and high voltage output constant current speed controller?
hola , esta muy bien, quisiera saber cual es la corriente de consumo en vacio del motor y la corriente a plena carga. a que frecuencia trabaja ?
Where did you find this controller?
i have a problem i have a smal but powerful el motor that wont axept more than 2.4 amps but i cant fin a power controller ore anything like it
where can we find this type of high power amp controller and motors? i want to build a gocart
@motiondynamics2010 Hello, mate! I was thinking about to buy one of these motors. The specification that I have is "Bosch GPA 24v 750W motor". I believe that this one is the same of your. Can you tell me if this one is good? Well, I mean... It can be used on a Electric Bicycle project? And I liked your control too. It is eficient? I searched it by the "Motion Dynamic" name and I found the to buy it. But, if i purchase one 75amp model, it can control two 750w motors?
can this handle reverse polarity for a DC motor (e.g. pwm forward and reverse?)
hi, i am looking for exactly that motor, is it for sale?
@markoconroy I do, though I don't use it as much as I should.
where can u buy that motor speed controller???
hey,where can i buy these in aus. have googled pwm australia with no real results.
where to find a 24 v dc motor ?? which device have it ?
How do you drive the mosfets? I use the same irfp4321 in a motordriver project but i don't get them work very well. Or may you send me the schematic? Thank you;)
Hey, i am beginner on the electronical. I want ask you, would you like explain to me how many diameter of your cable ?? so is it possible 50 Ampere flow on your cable ??. thanks for your attention. :)
What is the max RPM of that 24v motor??
Its max 3200rpm. It's a Bosch motor and has no efficiency at all....!
necesito estos dos. motor y controlador. donde los puedo conseguir. estoy en Colombia.
How to make 30amp.12volts pwm circuit diagram
hi man, where can i get that motor speed controller? could you help me please...
where did you get that engine
Man that motor is noisy, what frequency is you PWM?
nice,and what's the price?
Josue o problema e o controle de velocidade , como fazer???
Wow Amazing!!! i want tod make a electrico go kart, where do you get the motor? can you give me some link?
do you have an ebay store>?
whag kind a motor is this
Donde lo compro
that sell this type of engine. tell me the page to buy it
can u tell me all specifications n price of motor i need it ........ plz.
is it strong?
cool,, can u show me , how to make it??
Thanks
kan du visa koplings skema på vidio
from where i can buy it??
you can use arduino for program of that and use IF540N mosfet or highest amperes and voltage mosfet for that, thats the best idea for PWM motor controller
dj minions de spicable K2699 Mosfets for higher amp / voltage specs. I think they can take up to 50 amps & 600 volts max.
ship viet nam?
hola tendras un diagrama para adaptarseloa una moto electrica de 24 voltios dc?? saludos de venezuela!!hello adaptarseloa will have a diagram for an electric scooter 24 volt dc?? Greetings from Venezuela!
show me how to make it
hola como estas me puedes enviar el diagrama soy de venezuela tengo una moto que le compre a mi hijo electrica china y fui estafado porque le duro un dia sera que me puedes ayuadar a sustituir el diagrama tiene un motor de 24v dc y quisiera saber si me sirve tu proyecto gracias espero una resuesta tuya y agradecido!!
Os veo frecuentemente pero ahora agradeceria que me ayudarais,necesitaria un esquema electronico para un motor de corriente continua de 12 a 24 V de hasta 30 Amp.y 500W. Agradeciendo de ante mano vuestra ayuda.
hello how are you can send me the diagram'm from Venezuela I have a bike I bought for my son and I was scammed Chinese power because he lasted one day I can be a substitute ayuadar diagram has a 24V DC motor and I wonder if your project serves me thank you and I hope one adapting such grateful!
truenoymagneto 1 second ago.
Why would you want to build it ? It was scrapped for a reason, please, stop emailing me there's literally hundreds of better designs on the net!
Go to Avasva page if you want to learn how to build it yourself
where can I buy that exact speed controller?
show me how to make it