The circuits on this page are switch machine drivers that can be used to operate Stall-Motor type switch machine motors. The circuits use LM556 dual timer chips to provide a PUSH-PULL output to reverse the polarity of the supply to the switch machine motors.
http://home.cogeco.ca/~rpaisley4/556Stall.html
The circuits on this page are for motor controls using Push buttons and would typically be found in commercial and industrial installations. The circuits do not show the wiring of the motors themselves as this depends on the particular motor type. The type of motor also governs the number of contacts needed for the motor side of these circuits.
http://home.cogeco.ca/~rpaisley4/xStartStop.html
This circuit is crude but it does provide an inexpensive way to drive or test servo motor systems without the need for a complete system.
http://home.cogeco.ca/~rpaisley4/xServoTest555.html
The circuits on this page are basic designs for "Diode Matrix" switch machine control systems that can be used to operate "Stall Motor" switch machines in 'Ladder' type storage yards or other multiple turnout areas. The driver circuits themselves use LM556 dual timer chips to reverse the polarity of the voltage to the switch machine motors.
http://home.cogeco.ca/~rpaisley4/StallMatrix.html
As the beakman motor have no torque at all, I decided to buil this project based on the design of the regular electric motors. With a medium difficulty, this motor is able to work with a fair load using 6 volts.
http://www.josepino.com/other_projects/index?electric_motor.jpc
This motor is more like Pulse Motor as it pushes the magnets with only one coil. With only 3 Volts, it have three times more torque that the previous one and is easier to build.
http://www.josepino.com/other_projects/index?electric_motor2.jpc
This is a circuit for controlling the speed of small DC motors, it works nicely as a speed controller for an HO or N gauge model railroad.
http://www.solorb.com/elect/pwm/index.html
The circuit described here is for a general purpose device that can control DC devices which draw up to a few amps of current.
http://www.solorb.com/elect/solarcirc/pwm1/index.html
For BMW R Series
http://www.hazmat.com/~mjb/candm/regulator.html
with PIC microcontroller
http://www.imagesco.com/articles/picservo/04.html