Television – Receiver circuitry – Power supply
Patent
1992-07-10
1994-08-23
Powell, Mark R.
Television
Receiver circuitry
Power supply
348728, 363 21, 455 32, 455140, H04N 563
Patent
active
053411790
ABSTRACT:
In a BS (direct broadcast by satellite) timer recording mode, a constant voltage diode for controlling 18 V is directly inserted in a power circuit. Alternatively, a delay circuit is inserted at the input of a switching circuit for switching the constant voltage diode, thus absorbing the switching time difference between 140-V control and 18-V control. Therefore, the secondary side output voltages can be prevented from being increased, and the output voltages can be stabilized both in the BS timer recording mode (light load powering) and in the television mode (maximum load powering).
REFERENCES:
patent: 4595977 (1986-06-01), van der Ohe
patent: 4903130 (1990-02-01), Kitagawa et al.
patent: 5227964 (1993-07-01), Furuhata
Matsushita Electric - Industrial Co., Ltd.
Murrell Jeffrey
Powell Mark R.
LandOfFree
Source voltage control switching 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 Source voltage control switching circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Source voltage control switching circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-506140