operational amplifier - How does the output voltage of an Op-Amp swing to keep the inverting terminal at virtual ground in this circuit? - Electrical Engineering Stack Exchange
operational amplifier - How does this single supply opamp circuit work, and what does the output look like? - Electrical Engineering Stack Exchange
5PCS TL081CP High Slew Rate JFET-Input Operational Amplifier | eBay
50pcs TL081 TL081CP TI IC JFET Input Operational Amplifiers DIP-8 | eBay
operational amplifier - Will this OP AMP work for this application? - Electrical Engineering Stack Exchange
TL081 datasheet - General Purpose Single JFET Op-amps
5PCS TL081CP High Slew Rate JFET-Input Operational Amplifier | eBay
operational amplifier - Determining Impedances of an Op-Amp Circuit - Electrical Engineering Stack Exchange