Series DC motors connection

• Two brushed electric motor connected in series for parallel shaft working

Two schematics for connecting motors

Three phases AC electric motor

• The motor with an angular position sensor

• The sensor is use for variable speed application

Electronics power stage

The power MOS-FET are protected with fast recovery diodes

Automotive alternator

• The P1, P2 and P3 slots are for power

• The D+ is the supply of the voltage regulator for the rotor coil

• The D- is the negative supply of the regulator

• The DF is the regulated voltage

Angular position sensor

• Schematics with a magnet and two magnetic sensors

• I choose the Philips KMZ 10 B magneto resistors bridges and a Alnico 3.2 x 3.2 x 19.1 mm magnet

H1 signal, 60 mVpp - 40 ms

Only the bottom sensor is used

Speed control blocs schematics

Sensor setup