| Author | Views | Views Today | Rank | Comments |
| 147,732 | 59 |  |
74 |
| Author | Views | Views Today | Rank | Comments |
| 147,732 | 59 | |
74 |
| Often, people attempt to control DC motors with a variable resistor or variable resistor connected to a transistor. While the latter approach works well, it generates heat and hence wastes power. This simple pulse width modulation DC motor control eliminates these problems. It controls the motor speed by driving the motor with short pulses. These pulses vary in duration to change the speed of the motor. The longer the pulses, the faster the motor turns, and vice versa. |
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| i need a pwm switch to control my hho cell i need to feed it with some where between 5 to 15 amps . is there away it can be built to take care what i want (Editor's notes: Good luck with that: http://www.aaroncake.net/forum/topic.asp?TOPIC_ID=7606) |
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| In fact, this circuit WILL NEVER work ! ! The motor will never spin ! ! there is a component missing ! ! Without a freewheeling diode in parallel with the motor, it doesn't even start spinning... (Editor's notes: It works as pictured. I've built it several times. However it is simply not a PWM controller, but a pulse-frequency-modulation controller.) |
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| I need to build a controller PWM mulation motor 14 volts an 30 amps rating will you please help mi out. thank's | ||
| I'm new to this tech, but I wanted to know, can this be used in combination with a PWM or is it intended to replace the PWM. for example I want to limit amperage usage to 25 amps and the frequency at 20k, or am I completely missing the point. Please advise. | ||
| I need a pwm to handle 12 volts @ 5 to 10 amps. will the circuit on this page manage that? Thanks | ||
| help me about control motion of DC MOTOR every motion one degree every 4 mintes tanks | ||
| Can this PWM technique be used to control speeds of higher power motors using SCRs/TRIACs | ||
| There are enough PWM circuits around the internet based on the 555 for anyones handy use. Size the output transistor ( ideally a power FET ) for whatever you are driving, and limit the supply to the 55 to about 15vd max, Its not too particular about it's supply being ' well regulated' the whole point of it's design! | ||
| Hi.. Im doing the project on the topic mentioned.I want some theory for the chopper fed with uncontrolled rectifier and controlled by a PWMsignal... | ||
| are there any examples with CMOS cd4016 switches. specifically, various events at timing sequences[ 1 minute, 2 minutes so on] are activated...with the switch in question. | ||
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