This video shows the setup used for generating the power supply which will be used for testing this Boeing 737 gyroscope.
The power supply generation uses the following instrument:
A Boss bipolar amplifier 3612 (+/36V +/12A)
A function generator
A variable autotransformer CMV2F1
datasheet: https://docs.rsonline.com/8fd8/09007...
A 200µF MKP coupling capacitor in order to remove a possible DC offset voltage
The output of the amplifier is connected between C and D, the gyro is connected between A and C.