Based on an LM36000 OTA this circuit was found in the July 1988 issue of Radio Electronics magazine. It covers frequencies in the range of 45 Hz to 45 kHz.
April 2017 - Mouser Electronics is supplying the SP8008 line of diode arrays of Litelfuse. The new...
This 80's circuit has an input resistance of the order of 880 M and gain 10, using operational...
Figure bellow shows how the 4510, a divide-by-1U, up/down counter with three-state outputs is...