Resistor in parallel with DC motor to increase current draw...(quasi-torque limiting)

MikeML

Joined Oct 2, 2009
5,444
Here is what I am talking about: The current always flows the same direction through the resistor, regardless which way the motor is running.

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cmartinez

Joined Jan 17, 2007
8,830
Great point. Not sure I am able t put the current limiting solution before the relay.... Need to look at that more closely.
Yes... I just thought of that too... you could place the current limiting circuit before the relay, that way you won't need to use a bridge rectifier, and also losses would be minimized...
 

MikeML

Joined Oct 2, 2009
5,444
Yes... I just thought of that too... you could place the current limiting circuit before the relay, that way you won't need to use a bridge rectifier, and also losses would be minimized...
Even better, cut the lead that now goes from the reversing relay/switch to ground, and insert a resistor or current-limiter there. Start with the simplest current limiter first (a resistor), and if you need an electronic one, then it is a simpler unidirectional one where one of its two terminals connects to ground...
 

cmartinez

Joined Jan 17, 2007
8,830
Even better, cut the lead that now goes from the reversing relay/switch to ground, and insert a resistor or current-limiter there. Start with the simplest current limiter first (a resistor), and if you need an electronic one, then it is a simpler unidirectional one where one of its two terminals connects to ground...
Right... start with the simplest solution first... see if it's good enough
 
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