An inverter-scaler can be configured by using a larger input resistance as compared to the feedback resistance. Although it is not exactly a voltage divider it appears that way because of the differential amplifier configurations internally. The bipolar devices are actually current devices and setting the currents determines the gain. There is a very good book (that will date me) by Tobey, et al (Burr Brown) on Op amps. It may still be available in libraries. I am sure many on this list must have read it if they are in my age group. ----- Original Message ----- From: "Mike Hord" To: Sent: Friday, June 11, 2004 3:41 PM Subject: Re: [EE] OPAMP use > The non-inverting amplifier can only produce a gain >1. By > using a voltage divider and follower combination, you can > produce a gain <1, for example, to bring a +/- 10V signal > to a +/-5V circuit. > > Mike H. > > >Hi Mike > >That is what more or less we are doing so you are correct. My question is > >way use the inverting amp. configuration when you can use the non-inverting > >amp. configuration as it looks simpler. > >regards > > luis > > _________________________________________________________________ > Check out the coupons and bargains on MSN Offers! http://youroffers.msn.com > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics > -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.