|
|
| Re: Speeding up timers (1495762) | |||
 |
|||
| Home > SubChat | |||
|
[ Read Responses | Post a New Response | Return to the Index ] |
|
||
|
Re: Speeding up timers |
|
|
Posted by trains61 on Thu Dec 13 16:51:35 2018, in response to Re: Speeding up timers, posted by MorningsideHeightsM100 on Thu Dec 13 15:40:52 2018. Field Weakening:The DC motor can be made to run faster than the basic "balancing speed" achieved whilst in the full parallel configuration without any resistance in circuit. This is done by "field shunting". An additional circuit is provided in the motor field to weaken the current flowing through the field. The weakening is achieved by placing a resistance in parallel with the field. This has the effect of forcing the armature to speed up to restore the balance between its magnetic filed and that being produced in the field coils. It makes the train go faster. Various stages of field weakening can be employed, according to the design of the motor and the intended purpose. Some locomotives used as many as six steps of field weakening. The Lurker`s Guild Technical Division |
|
(There are no responses to this message.)
|
|