Voltage regulator for a television deflection circuit

A kinescope deflection apparatus including a feedback voltage regulator, comprising:

• a deflection winding disposed about the kinescope;
• deflection switching means coupled with said deflection winding for controlling the flow of current therein during trace and retrace intervals of the deflection cycle and for establishing the voltage being regulated;
• a source of energizing potential;
• first inductance means coupled to said source of energizing potential and to said deflection switching means for supplying energy to said deflection switching means from said source of energizing potential;
• second inductance means serially coupled with said first inductance means;
• controllable switch means including a control electrode and a controlled current path coupled in parallel with said second inductance means;
• and
• control means coupled to said control electrode and to the voltage being regulated for controlling the operating time of said controllable switch means in a manner to regulate the energy supplied to said deflection switching means.

A kinescope deflection apparatus including a voltage regulator comprising:

• a deflection winding disposed about the kinescope;
• bidirectional switch means coupled in parallel with said deflection winding;
• a source of energizing potential;
• first inductance means coupled between said source of energizing potential and said bidirectional switch means for supplying operating energy to said deflection apparatus;
• second inductance means serially coupled with said first inductance means;
• controllable switch means coupled in parallel with said second inductance means;
• and
• control means coupled to said controllable switch means and to the regulated voltage for controlling the operating time of said controllable switch means in a manner to control said operating energy and maintain said regulated voltage.

A energy regulator for a kinescope deflection arrangement comprising:

• a deflection winding disposed about the kinescope;
• a voltage source serially coupled with said deflection winding;
• first bidirectional switch means coupled in parallel with the serial combination of said deflection winding and said voltage source for establishing trace and retrace current flow in said deflection winding during respective trace and retrace intervals of the deflection cycle;
• reactive energy storage means including a first terminus coupled to a first electrode of said first bidirectional switch means;
• second bidirectional switch means having a first electrode coupled to a second terminus of said reactive energy storage means and having a second electrode coupled to a second electrode of said first bidirectional switch means for recurrently coupling energy from said reactive storage means during a commutating interval of said deflection cycle;
• first inductance means;
• second inductance means serially coupled with said first inductance means;
• a source of energizing potential;
• first coupling means for coupling said first and second inductance means with said source of energizing potential and with said reactive energy storage means;
• controllable switch means coupled in parallel with said first inductance means;
• and
• control means coupled to said controllable switch means and to said reactive energy storage means for controlling the operating time of said controllable switch means during said deflection cycle in such a manner as to control the energy stored in said reactive energy storage means at the beginning of said retrace interval.

A horizontal deflection circuit for a television receiver having a horizontal first stage including means for controlling line sweep and commutation, the energy required by each horizontal first stage being provided by a controllable supply circuit comprising:

• a source of DC energy;
• a storage inductance;
• a second inductance connected in series with said storage inductance, said series connection being disposed between said source of DC energy and said horizontal final stage;
• and
• a thyristor connected in parallel with said second inductance and controlled to allow current from said source of DC energy to bypass said second inductance and flow directly to said storage inductance, whereby current returning to said DC source from said storage inductance must flow through said second inductance.