TDA8145 pincushion correction circuit diagram

Published:2011/10/17 21:24:00 Author:Rebekka | Keyword: pincushion correction | From:SeekIC

TDA8145 is a widely used pincushion correction special IC. Its basic working principle is as follow: Field sawtooth voltageis sentto the N551's (2) feet by passing C592, R550. VR552 is the pillow distortion correction adjustment potentiometer. Adjusting it essentially can change the the amount of negative feedback from N551's 5 feet to 7, and it changes the pin 5 sparabolic wave output voltage rangeto make themoderate correction. There is not distortion of grating to keep rectangular state. VR553 is theline adjusting potentiometer.



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