----- Original Message ----- From: "Peter L. Peres" To: Sent: Saturday, June 15, 2002 4:48 AM Subject: Re: [PIC]: Will an unprogrammed chip oscillate? > On Fri, 14 Jun 2002, Doug Butler wrote: > > >What take real skill is to make a 0 ohm resistor to within a 5% tollerance! > > ! Actually an opamp wired as a negative resistor and near zero gain > should do it. > > Peter > No it won't.... 5% of 0 ohms is 0 ohms. So you'd need your circuit tuned to _exactly_ zero ohms, with _no_ tolerance. This isn't going to happen in the real world! Bob Ammerman RAm Systems -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu