Love This

[Bill the arcstarter]

Clarence L.Snyder wrote:

>>         Close... :)  SCR's are used for AC applications.  An SCR 
relys on
>> the 0V crossing to turn off.  And a TRIAC is two SCR's in parallel 
(sort
>> of).  :)
>>
>>         Ernst.
>Also used (with commutation circuit) on DC controllers like the GE 
>EV1 motor controller used on forklifts and some electric cars. REAL 
>tricky getting the suckers to turn off though!

Yup.  Anyone interested in this particular unnatural act (turning scrs 
off scrs) can see some scr commutation schemes on my page at:

http://www.geocities.com/CapeCanaveral/Hangar/6160/hvtank/hvtank.html

(Not for the electrically faint of heart)

-Bill
'84 Dodge Ram w/ Rochester 2-G carb from a '72 Chevelle

______________________________________________________
Get Your Private, Free Email at http://www.hotmail.com