Circuit diagram of the servocontroller (all opamps are OP07) | Download Scientific Diagram
OP07 amplifier Datasheet pdf - operational amplifier. Equivalent, Catalog
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OP07 by Analog Devices Inc./Maxim Integrated Datasheet | DigiKey
OP07 data sheet
OP07 Operational Amplifier: Pinout, Datasheet, OP07 VS LM308
Amazon.com: Major Brands OP07 General Purpose Single OP Amplifier, -18 Volt, 8-Pin, PDIP, 3.3 mm H x 6.35 mm W x 9.27 mm L (Pack of 10) : Industrial & Scientific