---------- Forwarded message ---------- Date: Fri, 29 Jun 2007 08:28:41 -0700 From: Ed Phillips <evp@xxxxxxxxxxx> To: Tesla list <tesla@xxxxxxxxxx> Subject: Re: audio oscillator (fwd) Wouldn't op-amp integrators result in triangle-waves? Making sine waves is a bit trickier." Yes and furthermore the amplitude would vary inversely as frequency making variable-frequency operation inconvenient. Ed