![forward and reverse motor control circuit forward and reverse motor control circuit](https://4.bp.blogspot.com/-V8XLMYzk0QQ/WUv3hHg4ILI/AAAAAAAAAYQ/ercrs7jCRm0yf1v0ymmuAKKrCQ-TUB5ywCLcBGAs/w1200-h630-p-k-no-nu/FORWARD%2BREVERSE.png)
- #Forward and reverse motor control circuit drivers#
- #Forward and reverse motor control circuit driver#
The motor control circuit for forward/reverse rotation in accordance with claim 1, wherein the Hall IC is a three-pin IC or four-pin IC.Ĥ. The motor control circuit for forward/reverse rotation in accordance with claim 1, wherein the driving source is a DC voltage source.ģ. A motor control circuit for forward/reverse rotation comprising: a driving circuit including a driving source, a Hall IC and a driving IC, wherein the driving source provides a signal to enable the Hall IC to output a control signal to the driving IC a switching circuit located between the Hall IC and the driving IC, wherein the switching circuit is utilized to change the transmitting direction of the control signal, the driving IC generates a driving signal according to the transmitting direction of the control signal and a motor coil winding for receiving the driving signal and deciding motor rotating direction according to the driving signal.Ģ. Inverter circuit for converting DC power to pulse wave powerĭrive circuit for an alternate phase brushless DC motorġ.
![forward and reverse motor control circuit forward and reverse motor control circuit](https://friendtechbd.com/wp-content/uploads/2021/05/Motor-forward-reverse-control-circuit.png)
Pulse-width modulation speed controllable DC brushless cooling fan Motor drive circuit and motor drive system using the circuit thereof Motor driving circuit with filter condensersĮlectric means for driving single-coil motor Swapping out both the TIP120 and relay with higher-rated parts (readily available online) should let you build a much beefier version of this motor control fairly cheaply.AC fan motor driving circuit having detecting current wave capabilityĭirect current motor drive circuit and fan motor including the same This may not work as well as a proper heatsink - but will definitely help. Just cut a 1"x1" piece of the can using scissors - bend up the sides a little, and drill an 5/32" hole to mount it.
![forward and reverse motor control circuit forward and reverse motor control circuit](https://i.pinimg.com/originals/d3/46/ed/d346edc40e8bfc88856f651b76641a13.jpg)
You can alternately make your own heatsink out of a piece of aluminum can.
![forward and reverse motor control circuit forward and reverse motor control circuit](http://www.industrial-electronics.com/images/imc7e_29-11.jpg)
The heatsink should be installed on the transistor with the "Enable" pin using a #6 bolt and nut (screw it on tight!). I've verified the Radio Shack 276-1363 heatsink can be installed without re-soldering everything (you may need to bend stuff a little). The TIP120 is rated at 5 amps - but will overheat without a heatsink if run this hard continuously. A TIP120 on its own provides a super-simple way to do single-direction motor control. This gives them much higher "gain" - meaning they can use a very small current to switch a much larger current. These transistors are actually two transistors chained together into one. This project uses TIP120 "Darlington" transistors. I chose the one featured in this project since Radio Shack stocked it.
#Forward and reverse motor control circuit driver#
It should be possible to build a version of this driver that supports lower voltages by swapping out the relay with one having a lower "pickup" voltage. Fortunately - the component most likely to burn out is the transistor with the "Enable" pin - so you're only out a $1.50.
#Forward and reverse motor control circuit drivers#
Unlike many commercial motor drivers - this driver does not have any "protection" - so if you abuse it too much - it will fail. It's rated at 130% of nominal - or 15.6v. The relay's coil seems to dictate the maximum voltage this circuit can handle. If you're having problems with the controller refusing to reverse - it may be that your input voltage is too low. We'll go through all the connections one-by-one. This is listed as 9.6v - but I've found it to function properly as low as about 7.5v.ĭon't worry if the schematic doesn't make total sense. The minimum voltage to drive this circuit is determined by the "pickup" voltage of the relay. The enable pin may be switched on and off very quickly for PWM (pulse width modulation) speed control.īoth control pins are connected to the microcontroller via 220 Ohm resistors to limit current. The "Base" of the second TIP120 is the "Enable Pin" - turning it on causes the motor to actually run. This is used to turn the motor on and off. The "Base" of the first TIP120 is the "Direction Pin" - turning it on and off switches the direction of the motor.Ī second TIP120 switches power to common on the relay. Since the microcontroller can't quite produce enough current to drive the relay - a transistor (TIP120) is used to switch it on and off. This in effect reverses the wiring whenever the relay is turned on or off. The motor is connected to both normally closed and normally open (in reverse) sides of the relay. This circuit uses a DPDT (Double Pole Double Throw) relay to switch which direction the motor is turning.