XPost: sci.electronics.components, sci.electronics.design   
   From: erichpwagner@hotmail.com   
      
   On 03/04/2015 06:42, DaveC wrote:   
   > Electromagnet.   
      
   Electromagnet load will take pwm just fine, no need to operate the   
   driver transistor as linear device. The inductance of the electromagnet   
   will ensure the average current is substantially ripple free if the pwm   
   frequency is high enough.   
      
   piglet   
      
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