PTT-TDS/11 - Pressure on carbon brushes
AE-TDS/10 - Threading on slip rings
AE-TDS/09 - Circumferential brush stagger
AE-TDS/08 - Preventive maintenance
AE-TDS/07 - Sandwich brushes / composite brushes
AE-TDS/06 - Setting the neutral
AE-TDS/05 - Losses in brushes
PTT-TDS/04 - Dimensions t, a, and r of carbon brushes and brush-holders
AE-TDS/03 - Chamfering of commutator bar edges / machining of ring helical grooves
