Read Sharp 28JW-74H (serv.man2) Service Manual online
50Hz Widescreen Colour Television – GA20 Chassis
Sharp Electronics (UK) Ltd
Technical Support
Issued June 02
Page 9
As the magnetic field starts to collapse the back emf produced forward biases the diode and the
energy is returned to the circuit, effectively damping the oscillation, and the beam spot moves back to
the centre of the CRT in a linear fashion.
energy is returned to the circuit, effectively damping the oscillation, and the beam spot moves back to
the centre of the CRT in a linear fashion.
Scan Coils
S-Correction
Fly-Back Tuning
Capacitor
Efficiency
Diode
Horizontal
Output
Direction Of Scan
As energy is saved by the action of the diode, it is referred to as the Efficiency Diode.
As the beam spot returns to the centre position the next horizontal drive pulse arrives and the process
continues.
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