Power supply protection circuit

H - Electricity – 04 – N

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

350/102

H04N 3/23 (2006.01) H04N 3/18 (2006.01) H04N 3/20 (2006.01)

Patent

CA 2000524

A horizontal deflection circuit includes a flyback transformer. A secondary winding of the flyback transformer is coupled in series with a diode switch to produce a trace rectified supply voltage that energizes a vertical deflection amplifier. The diode switch also provides switching operation in an East-West diode modulator. During, for example, service mode operation, when the vertical raster is collapsed, the current in the secondary winding during trace is substantially reduced. The reduced current during trace is sensed for producing a control signal that causes the peak current supplied to the diode switch by the diode modulator to be smaller than the current in the secondary winding. This ensures that the diode switch remains conductive throughout horizontal trace, thereby preventing an undesirable increase in the supply voltage from occuring.

L'invention est un circuit de déviation horizontale, circuit qui comprend un transformateur. L'un des enroulements secondaires de ce transformateur est couplé en série avec un commutateur à diode qui produit une tension d'alimentation redressée, laquelle est appliquée à l'amplificateur de déviation verticale. Le commutateur à diode effectue également une opération de commutation dans un modulateur à diode est-ouest. Par exemple, quand la trame verticale est supprimée en mode de service, le courant dans l'enroulement secondaire est réduit substantiellement durant le balayage. Cette réduction du courant durant le balayage est détectée pour produire un signal de commande sous l'effet duquel le courant de crête transmis au commutateur à diode par le modulateur à diode devient plus faible que le courant dans l'enroulement secondaire. De la sorte, le commutateur à diode reste à l'état conducteur durant tout le balayage horizontal, empêchant ainsi une augmentation indésirable de la tension d'alimentation.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Power supply protection 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 Power supply protection circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power supply protection circuit will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-2019252

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.