🚀 go-pugleaf

In article <3609@tahoe.unr.edu> isaac-b@tahoe.unr.edu (Benjamin Isaac) writes:
>I have had a lot of problems locating a decent schematic for a speed controler
>for a cordless drill.
>  
>The type of schematics I am looking for is one that:
> 
>       1. DOESN'T use a transitor/resistor design (i.e. heat/excessive drain).
>       2. doesnt require extremely hard to find components.
>       3. can handle around 1amp at 6volts.
>       4. will hopefully have some torque at lower speeds. 
> 
>I would appreciate any help through e-mail or through this newsgroup.
>
>net: isaac-b@tahoe.unr.edu 
> 

If anyone has a good, tried-and-true circuit for this, I'd be interested 
in seeing it posted too!  

I've found a "Speed Control for Power Tools" schematic in the Feb. 1967
Popular Science (plus a correction on p. 10 of Apr 1967), but is uses
resistors and a mechanical contact set up that would be difficult to
make from scratch.  Hey, at least it matches the age of my electric drill!!

---
Rick Inzero					rochester!cci632!rdi
Computer Consoles Inc. (CCI)			uunet!ccicpg!cci632!rdi
Rochester, NY					uunet!rlgvax!cci632!rdi

"Your grandmother never, ever called me stupid.  
	She always called me 'pinhead'." -Jimmy Stewart in 1988 Campbells Soup
								commercial.