An explanation of H bridges (a type of motor control circuit). I also show you how to build a bidirectional motor speed controller.
Website:
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Parts:
NE555 timer:
N-channel MOSFET:
P-channel MOSFET:
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#Electronics #Robotics #Engineering
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What happens if i don't put that voluminous, huge, bulky, expensive, and unreliable electrolitic capacitor to the H bridge? A black hole explosion??
Hey man, I'm sorry for my ignorance, I am learning electronics. The voltage divider circuit at 2:47 wouldn't result in 0.25v at that point? Thanks
I’m so upset I didn’t come across this channel 5-6 years ago when I did my BSEE. This guy teaches these lab topics so well!
I’m kinda ignorant. If I need an SPST switch to flip the polarity of the bridge, why would I not just use a DPDT switch and forget the whole bridge? I’m missing something significant.
Someone tell me what I'm doing wrong! I'm using an arduino to control the bases of 4 transistors, and a 9v batter to source the current through them. I can make my 2 motors connected together go forward, and backward independently, but not when everything is hooked up all together. Is there an issue with floating pins? Should the bases additionally be connected to ground like they are in this video? I know it's stupid easy, but trial and error is killing me.
Thanks Sir
Is the switch. On/off? On/on? On/off/on?
hi there! how would you add over current protection to this circuit?
You are a fucking god send. Thank you for these videos.
Short, Sweet, and Great. Thanks
@Afrotechmods sir i have doubt regarding the 1000uf filtering capacitor how to decide this capacitor value and what role does this capacitor plays in h bridge
It would have been great if you had show some of thoses "better" H bridges electrical diagram who are available.
Sort of new to electronics but I thought the voltage divider equation was R2/R1+R2 * starting voltage and I get 11.75V. What am I getting wrong?? No one else mentioned this that I saw so I'm obviously missing something. Thx!!
I know this is old, but why no diodes? The motor funtions as an inductor right? Or are the switchingvoltages not high enough to cause damage?
"What happens if we turn all transistors on?"
Actual cable disintegration
what is the main purpose of H bridge? just control of roration or srart and stop the motor safely without damaging it and power supply?
I wanna use pwm and 12V 15A switching power supply for a 10A DC motor, are these two circuits reduce the inrush initial current? or should use only pwm alone? (motor is for agate carving)
I am from non English speaking country. Your English is not only very clear, it is sweet. Explanation was fantastic. All doubts about the H Bridge are cleared. I am in love with the channel. Thanks
Awesome tutorial!
I tried this on multisim but my simulation keeps failing can anyone help?
bloody good. haha! Stop whining!!
Parabéns pela maneira engraçada com explica o conteúdo!
How can I give my robot the ability to speak on her own without any pre-recorded lines you know give her some intelligence
Very neat presentation of the subject!
😁👏👍 Show de⚽🏈🇧🇷🙏
Nice… with the pulse width modulation – is the motor still running at full voltage, just a reduced current due to the lesser amount of time the motor is being sent current?
I loved when all transistors ON, lol
I have just the application for this. Thank you for this fine demonstration. 👍👍
very good job thanks for the video
Great video as always!
Have you done a video on controlling the speed and direction of the motor with a joystick? If not how would I go about doing that?
Great video! I made this BJT version which works great https://youtu.be/ghQAQDAkElY , but I can't seem to a FET version to draw enough current. What am I doing wrong? I've used fets to make high current amplifiers and switches before, but they seem to behave differently in the bridge configuration. Still scratching my head…
Great video! Question: I've made a BJT version h-bridge which works well over 1 amp, but my MOSFET version can't seem to draw enough current… fine for small motors, but no luck above the milliamp range. Tried making a switching circuit to drive each fet individually, but still no luck. Doesn't seem to be much info online for making a higher current Mosfet h-bridge. Any ideas?