Ed, I wasn't commenting on the type of op-amp. Obviously there are a lot better op-amps then the 741. What I was commenting on was the three gain control pots. -Larry ----- Original Message ----- From: "ed thelen"
To: Sent: Tuesday, November 06, 2001 8:52 PM Subject: Re: laser seismograph > You have me curious - > How is the 747 different from any other noisy, drifty, hi-input current, > op-amp from the early 1970's ?? > > Feedback is feedback isn't it? > > The modern op-amp designs seem so much better. > "I'd walk a mile for a camel - no no that should be chopper stabilization." > > (And I have used my share of 747's when they were about > the only game in town "for the rest of us".) > > Cheers > Ed Thelen > > ----- Original Message ----- > > From: "Larry Cochrane" > > > > I like the 741 op-amp circuit. It has three different ways of controlling > the gain! > > > > -Larry Cochrane > > Redwood City, PSN > > > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>