Brune-section simulation circuits using two operational amplifiers
T. Inoue, Fumio B. Ueno, Yasushi Fukuda · Electronics Letters · 1980
New Brune-section simulation circuits using two operational amplifiers are proposed. A first-order allpass filter is constructed as an application using one of these simulation circuits. The measured response coincided closely with the calculated one in the frequency range less than about 10kHz.