Pillow school circuit-3
Source: InternetPublisher:国民男神经 Updated: 2013/02/26
Models using this pillow calibration circuit include: Korean Samsung MC-15 movement, Venus C6418, V6458, Peony 64C1, Leroy CT6388W, etc.
The field sawtooth wave voltage is sent to the pillow calibration circuit through pin (4) of P404. R455, C454, and R457 form an integrating circuit to integrate the field sawtooth wave to form an upward convex parabolic wave voltage, which is added to B of the parabolic wave shaping amplifier tube Q451. pole, after amplification and shaping, a concave parabolic wave voltage of 9V (peak-to-peak value) is output from the C pole, and then added to The B pole of the composite tube composed of Q453 and Q452 is amplified and outputs a parabolic wave voltage of 12.5V (peak-to-peak value) from the C pole of Q452. Finally, it is sent to the row scanning circuit through the (3) pin of FR459 and P403. Scan current modulation. Achieve the purpose of correcting pincushion distortion.
VR451 is the line width adjustment potentiometer, and VR452 is the pincushion distortion adjustment potentiometer.
- What is an ac to dc transformer in circuit design
- What types of power field effect tubes are there? Selection criteria for power field effect tubes
- Transfer characteristics of BJT, how to apply Shockley equation?
- How do you calculate the value of capacitors in series? Why use capacitors in series?
- What is power factor and three ways to improve it
- DIY a decorative lamp
- How to Build a Simple Temperature Indicator Circuit Using NTC and PTC Thermistors
- How to build a drag racing timer circuit using a 7-segment display and discrete components
- Why use PWM? What are its advantages?
- What is the difference between high-side and low-side resistive current sensing
- 555 square wave oscillation circuit
- 555 photo exposure timer circuit diagram
- Introducing the CD4013 washing machine timer circuit diagram
- Simple level conversion circuit diagram
- 555 electronic guide speaker circuit diagram for blind people
- Circuit diagram of disconnection alarm composed of 555
- Analog circuit corrector circuit diagram
- color discrimination circuit
- Color sensor amplification circuit
- Level indication circuit