Exact match. Not showing close matches.
'[EE]: H-Bridge Crowbar (was PIC reseting due to r'
|This time with the right tag.
----- Original Message -----
From: "Lawrence Lile" <TOASTMASTER.COM> llile
To: <MITVMA.MIT.EDU> PICLIST
Sent: Wednesday, August 29, 2001 10:29 AM
Subject: H-Bridge Crowbar (was PIC reseting due to relays)
> get hosed by the read-write-modify bug. So far so good. But what about
> when a little glitch comes along and this thing begins to crowbar? Maybe
> do want to destroy the device at that point... but let's assume I don't.
> It would be simple to add a little logic circuit to prevent both inputs
> going high at the same time. Digikey sells a 2-input Xor gate for
> two of them would do the trick. $0.70 might sound cheap to you rocket
> scientists, but I build whole PC boards that cost less than that. Can
> anybody think of a simple, cheap way to implement this, say using diode
> logic or a To-92 transistor? Kind of a design challenge.
> What I had originally wanted was an H-Bridge that would go forward for a 1
> input, reverse for a 0 input, and do nothing for a high impedance input,
> > on the choppers, which is poorly documented, and apparently none of
> > in my signature line, but due to the inability of sysadmins at TELOCITY
http://www.piclist.com hint: To leave the PICList
More... (looser matching)
- Last day of these posts
- In 2001
, 2002 only
- New search...