This circuit is from National Semiconductor using an LM11, which is uncommon nowadays. The circuit can be implemented with other operational ones.
Found on an 80's Radio Electronics, this two-section circuit is designed to pass the frequency...
November 2016 - Azoteq IQS572-B000 ProxSense, a Toucjscreen and Trackpad controller designed for...
This circuit was found in the November 1994 issue of Electronics Now magazine. The circuit is...