When the speed, load (load size or power factor) of the synchronous generator of the aircraft changes, its voltage will change accordingly. In order to ensure the normal operation of the electrical equipment, it is necessary to adjust the voltage of the synchronous generator by changing the excitation current of the excitation machine. The basic principle of the bookmark3 transistor voltage regulator is shown in (a). In the figure, the high power transistor BG is connected in series in the excitation coil circuit of the exciter to control the excitation current of the exciter. By properly setting the operating conditions of the high-power transistor to operate in the switching state, the equivalent circuit is as shown in (b). The solution of the above equation is: April 2002, analog device 3 test results, IF amplification unit test data, see Table 1, Table 1, test data input signal power / dBm output signal power / dBm, as shown in Table 1, the test results meet 60dB Dynamic Range. Here PM demodulator test (read peak-to-peak from oscilloscope); set modulation index: ffip=0.31.2 rad; modulation frequency: use low frequency signal source instead, from 4110 kHz; observe from locking index and demodulation waveform, ring The road is in the range of -84-20dBm, stable operation, the final stage viewing gain is adjustable, can adapt to different phase modulation index, and the demodulation output peak-to-peak value can be adjusted to 3.5V. 4 Conclusion The VCX0 and intermediate frequency unit should be shielded in the test. Isolation, otherwise the VCX0 output signal is spatially coupled to the IF unit input. In the case where no input signal is applied, the loop is locked, causing a false lock phenomenon. Higher Inner Ring Ball Bearing
Higher Inner Ring Ball Bearing : Hebei Naimei Bearing Co., Ltd. is specilized in Higher Inner Ring Ball bearings . it is one of Non-srtandard bearings . We have completed processed system. the several Auto- professional machines to guarantee the Quality. Our products are sold to America,Europe Oceania etc. We are the trustworthy team who works for the customers.
If you need other styles Non-standard
bearings , please send us your drawing or samples , we have professional
technical department service to you .
Higher Inner Ring Ball Bearing,Ring Ball Bearing,Window Sliding Bearing,Plastic Injected Roller Bearing Hebei Naimei Bearing Co., Ltd. , https://www.nmn-bearing.com
