|26th January 2006, 03:21 PM||#11|
Join Date: Feb 2005
Location: NEW DELHI
i m posting the image for correctly using the diodes across the regulator ics
the diodes provide protection(they must not be reverse biased).
d1 and d2 ensure that the transients on the regulator o/ps do not drive the o/ps to a potential above their i/ps and cause damage to the regulators.
regulators may not turn on simultaneously,if such a condition occurs the o/p of the slower one may be driven to the potential of the faster one ,so d3 and d4 prevent this condition.
IN4007 or alike are sufficient.
Never Underestimate The Bandwidth of A Station Wagon Full Of Magnetic Tapes Hurtling Down The Highway...................Andrew S Tanenbaum
|26th January 2006, 03:32 PM||#12|
Join Date: May 2002
Location: The great city of Turnhout, BE
Blog Entries: 7
No. With the neg reg, if the cap discharges, the reg input is pos with respect to its output, and the diode shunts the cap discharge current away, as shown in the previous post.
|Thread Tools||Search this Thread|
|Thread||Thread Starter||Forum||Replies||Last Post|
|Reverse polarity protection, better way without diode.||guiseppim||Class D||5||19th May 2009 08:44 AM|
|Anti-reverse-bias protection diode vs. performance||hollowman||Power Supplies||5||29th September 2008 12:15 AM|
|Need a CRD E-102 (current regulator diode)||ostie01||Parts||2||10th August 2006 10:13 PM|
|Diode protection: Quick Question||2sb18||Chip Amps||4||2nd March 2006 08:44 PM|
|3-terminal regulator IC protection||metebalci||Parts||0||4th May 2004 09:46 PM|
|New To Site?||Need Help?|