Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Patent
1995-06-09
1997-06-24
Wysocki, Jonathan
Electrical transmission or interconnection systems
Plural supply circuits or sources
Substitute or emergency source
307 43, 307 64, 364707, 320 2, 320 11, 320 39, 320 43, 320 49, 320 54, 320 56, H02J 906
Patent
active
056420048
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a power supply for standby circuits of electrical consumers.
2. Description of Prior Art
Many devices in the field of entertainment electronics and industry, such as television sets, radios, sound tapes, printers, photocopiers and machines, today have an emergency circuit, also known as a stand-by circuit. Such devices are continuously in a state of readiness. The standby circuits often provide signal monitoring elements of function signals. This can be an operating keyboard or a remote control receiver. The signal monitoring element is coupled with a switch which puts the device into operation or back into the standby mode. To keep the receiver of a remote control active 24 hours a day, a relatively large amount of energy is required even today, because the receiver is continuously connected with the electrical power supply via a power unit.
The same problem occurs with regard to various types of monitoring installations, identification of persons, as well as with battery charging devices, for example.
For example, in the standby mode a television set or a stereo system uses 7 to 10 W. Outside of an average switched-on operating time of three hours per day, 147 Wh (21 hours.times.7 W) are therefore used for the standby of the receiver alone. This results in a total of at least 53 kW/h per year.
Various devices remain connected to the electrical power supply even during prolonged non-use of the device, because the control device assures 24 hour monitoring. This connection with the electrical power supply exists also when unloaded primary cycled electrical power devices are connected with the electrical power supply. This causes unnecessary disruptions because of phase cuts and also involves, besides a large electrical current consumption, dangers connected with safety, for example, lightning damage, current surge by touching, and short circuits because of water damage.
However, today the operation of solar-powered calculators or watches already shows that considerable functions can be executed, even under artificial light, without energy from the electrical power supply. Surveys of the population have shown again and again that people are ready to conserve energy, but do not want to forego a certain standard of living. Thus the above described shortcomings must be resolved with the aid of technology.
SUMMARY OF THE INVENTION
It is one object of the invention to provide an economical power supply for standby circuits of electrical consumers, such as remote control receivers, monitoring systems, battery charging devices and the like, which is operated without energy from the electrical power supply and is only connected to the electrical power supply when it is demanded by the consumer connected with it.
BRIEF DESCRIPTION OF THE DRAWINGS
The current supply in accordance with one preferred embodiment of this invention will be described below in connection with the drawings, wherein:
FIG. 1 shows a basic diagram of the controlled current supply, according to one preferred embodiment of this invention; and
FIG. 2 shows an example of a circuit of the controlled current supply, according to one preferred embodiment of this invention.
DESCRIPTION OF PREFERRED EMBODIMENTS
The current supply S of standby circuits of electrical devices in accordance with FIG. 1 has a power unit 5, a storage element 2, a voltage detector 3 monitoring the charged state of the storage element 2, and an optocoupler triac 4 controlled by the voltage detector 3, by which the power unit 5 can be cut off from the electrical power supply.
The secondary output of the power unit 5 is connected with the storage element 2. The voltage detector 3 controls the charged state of the storage element 2 and, if required, switches the optocoupler triac 4 on. The storage element 2 can be connected with an alternative voltage source 1. An electrical consumer 6 is supplied by the storage element 2. The electrical consumer 6 can be an electrical device, a remote control
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patent: 4709200 (1987-11-01), Ochiai
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patent: 5465039 (1995-11-01), Narita et al.
patent: 5471114 (1995-11-01), Edwards et al.
patent: 5486726 (1996-01-01), Kim et al.
Fischer Helmut
Paladini Albert W.
Wysocki Jonathan
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