View Single Post
Old 07-20-2019, 03:32 AM   #23 (permalink)
freebeard
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 28,582
Thanks: 8,101
Thanked 8,894 Times in 7,339 Posts
Similar to this:


https://thumbs1.ebaystatic.com/d/l22...hlr95oICJw.jpg
Quote:
PWM is more efficient than a rheostat, no?
What reading I did suggested varying the frequency instead of chopping into pulses. It made me wonder if you could use a diode to make a half-sine wave and then switch it in and out for a two-speed control.
__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
.
.
Three conspiracy theorists walk into a bar --You can't say that is a coincidence.
  Reply With Quote