Focus circuit

Details Focus circuit Focus circuit

G - Physics

09

G

G09G 1/00 (2006.01) H04N 3/26 (2006.01)

Patent

CA 2111936

In a focus circuit for cathode-ray tube (40) of electromagnetic focusing type, a DC voltage (B4) which is made by dividing CRT anode voltage (B3) by a voltage dividing circuit (27) is compared with a reference voltage (B6) by an anode voltage variation component detection circuit (29), thereby to output therefrom a signal (Ve) of anode voltage variation component. This signal (Ve) and static focus adjusting DC voltage (B7) are summed and amplified by an output amplifier 30, which issues a current for correcting focus to electromagnetic focusing coil (31).

Dans un circuit de concentration de tube cathodique (40) du type à focalisation électromagnétique, une tension continue (B4) obtenue en divisant la tension anodique (B3) du tube cathodique au moyen d'un montage diviseur de tension (27) est comparée à une tension de référence (B6) au moyen d'un circuit de détection de variation de la tension anodique (29), ce qui permet de produire un signal (Ve) de la composante de variation de la tension. Ce signal (Ve) et la tension continue de réglage de la focalisation statique (B7) sont additionnés et amplifiés par un amplificateur de sortie (30), qui émet un courant de correction de la focalisation dirigé vers la bobine de focalisation électromagnétique (31).

Affiliated with

Also associated with

Rating

Focus circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Focus circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Focus circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1847601