Pillow school circuit-1
Source: InternetPublisher:石榴姐 Updated: 2019/01/03
The field sawtooth wave signal is sent to the base of V551 from R514, integrated by R516 and C514, and differentiated by the EB pole of C510, R519, C509, and V551 to form a parabolic wave signal, which is then amplified by V552 and output from the collector, directly sent to V553 The base of the V553 collector is added to the negative terminal of V402 via R529 and L403. The current on the horizontal deflection coil is modulated by V401, and the east/west pincushion distortion is corrected.
What is added to R520 is a parabolic wave signal. Adjusting R520 can adjust the amplitude of the parabolic wave signal, which also adjusts the pillow calibration. The DC voltage is added to R523, and the width can be adjusted by adjusting R523.
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