公开(公告)号：FI65519B

公开(公告)日：1984-01-31

申请号：FI771239

申请日：1977-04-19

Applicant: RCA CORP

Inventor： HAFERL PETER EDUARD

IPC: H04N3/16 ,  H03K4/62 ,  H03K4/83 ,  H03K4/92 ,  H03K6/00

Abstract: In a switched vertical deflection circuit, two SCR switches couple horizontal retrace pulses to a capacitor. A modulator couples pulse width modulated gating pulses to the SCR's. The SCR's couple to the capacitor successively smaller portions of the horizontal retrace pulses during a first part of the vertical trace interval and successively larger portions during a second part for developing in a vertical deflection winding a sawtooth vertical deflection current. The modulator couples gating pulses to one of the SCR's during the vertical retrace interval for substantially loading the horizontal deflection circuit during the vertical retrace interval for preventing undesired oscillations within the horizontal deflection circuit.

公开(公告)号：DK35183A

公开(公告)日：1983-07-30

申请号：DK35183

申请日：1983-01-28

Applicant: RCA CORP

Inventor： HAFERL PETER EDUARD

IPC: H04N5/63 ,  H04B1/034 ,  H04N3/18 ,  H04Q9/00 ,  H04N

Abstract: A deflection generator (21) of a television receiver includes a trace switch (27) that during normal mode of operation is switched at a deflection rate to generate scanning current in a deflection winding (LH). The deflection generator includes a retrace capacitance (CR) for forming a retrace resonant circuit with the deflection winding to produce a retrace pulse voltage. A load circuit (at Vb) is coupled to the deflection generator and is energized by the retrace pulse voltage during normal operation. A remote control circuit (30) develops a remote ON-OFF command signal. A standby circuit (Q2) is series coupled with the deflection generator (21) and is responsive to a remote ON-OFF command signal for producing substantially a short circuit through the trace switch (27) upon receipt of the OFF-state of the command signal. The retrace pulse voltage then collapses and places the load circuit in a standby mode of operation.

公开(公告)号：DK179883D0

公开(公告)日：1983-04-22

申请号：DK179883

申请日：1983-04-22

Applicant: RCA CORP

Inventor： HAFERL PETER EDUARD

IPC: H04N3/233 ,  H04N

公开(公告)号：FI831287A0

公开(公告)日：1983-04-15

申请号：FI831287

申请日：1983-04-15

Applicant: RCA CORP

Inventor： HAFERL PETER EDUARD

IPC: H04N3/233 ,  H04N

公开(公告)号：FI63143C

公开(公告)日：1983-04-11

申请号：FI770785

申请日：1977-03-11

Applicant: RCA CORP

Inventor： HAFERL PETER EDUARD

IPC: H04N3/16 ,  H03K4/83 ,  H04N20060101 ,  H04N3/23 ,  H04N3/233 ,  H04N3/22

公开(公告)号：FI62608C

公开(公告)日：1983-01-10

申请号：FI770284

申请日：1977-01-28

Applicant: RCA CORP

Inventor： HAFERL PETER EDUARD

IPC: H04N3/16 ,  H03K4/83 ,  H04N3/22 ,  H04N3/23

公开(公告)号：DE3217682A1

公开(公告)日：1982-12-02

申请号：DE3217682

申请日：1982-05-11

Applicant: RCA CORP

Inventor： HAFERL PETER EDUARD

IPC: H03K4/64 ,  H03K4/90 ,  H04N3/22

Abstract: A linearity correction circuit for use with the horizontal deflection circuit of a television receiver comprises an inductor having two inductor portions. A capacitor, coupled to the S-shaping capacitor of the horizontal deflection circuit, is charged through one portion of the inductor during the horizontal trace interval, and discharged through another portion of the inductor during the horizontal retrace interval in order to provide linearity correction. The inductor may be tapped to allow charge/discharge current switching during the trace interval without introducing beam velocity modulation errors so that the linearity correction circuit may be efficiently combined with horizontal driver circuitry.

公开(公告)号：DE3111115A1

公开(公告)日：1982-03-04

申请号：DE3111115

申请日：1981-03-20

Applicant: RCA CORP

Inventor： HAFERL PETER EDUARD

IPC: H03K4/62 ,  H03K4/72 ,  H03K4/83 ,  H04N3/16

Abstract: A synchronous switched vertical deflection circuit for use with a television receiver comprises first and second bidirectional switches coupled to conduct current in opposite directions. Horizontal rate energy is coupled into one end of the switches. Vertical deflection means are connected to the other end of the switches. Pulse-width modulated signals are applied to the control terminals of the switches to allow conduction of the horizontal rate energy in the vertical deflection means during selected portions of each vertical deflection interval.

公开(公告)号：CH614821A5

公开(公告)日：1979-12-14

申请号：CH72576

申请日：1976-01-21

Applicant: RCA CORP

Inventor： HAFERL PETER EDUARD

IPC: H04N3/18 ,  H03K4/83 ,  H04N3/16

公开(公告)号：NO139285C

公开(公告)日：1979-01-31

申请号：NO433273

申请日：1973-11-12

Applicant: RCA CORP

Inventor： HAFERL PETER EDUARD

IPC: H03F1/30 ,  H03F3/20 ,  H03F3/30 ,  H03F3/21 ,  H03F3/42 ,  H04N3/18 ,  H04N5/60 ,  H04N5/63 ,  H03F3/04

Abstract: 1460569 Transistor amplifiers RCA CORPORATION 12 Nov 1973 [13 Nov 1972] 52362/72 Heading H3T An amplifier circuit having constant current consumption comprises first and second transistors 101, 105 series connected between supply terminals, utilization means 104 coupled in parallel across the first transistor 101 and a D.C. impedance 102 monitoring the current through the first transistor and controlling via a third transistor 106 and a resistor 108 the bias to the second transistor 105 so as to provide constant current flow I 0 therethrough. As shown the D.C. power supply for an audio pre-amplifier 80 and output amplifier 100 is obtained by rectification of horizontal deflection flyback pulses from a T.V. receiver and the arrangement maintains the current drawn therefrom constant. Thermal stability of I 0 is achieved by the diodes 109 and 110. The audio amplifier is protected against a short circuit across the speaker 104 since the maximum current can only reach the value I 0 .