Electrical transmission or interconnection systems – Switching systems
Patent
1987-05-06
1989-02-07
Shoop, Jr., William M.
Electrical transmission or interconnection systems
Switching systems
307 3, 307311, 307108, 307109, 307 37, 307106, 363 48, 400120, 328 67, 361190, H03K 300, H01L 912
Patent
active
048033790
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention is directed to a circuit arrangement for a power supply of a control or regulating element and of active power consumers comprising a power pack with voltage rectification, particularly a capacitative power pack, and/or comprising an accumulator, for electrical and electronic control or regulating devices.
Such devices such as time switch clocks, room thermostat timers, program switching devices, time relays, machine controls and regulators, freely programmed, remote controlled executive sequencers --to name only a few--are usually provided with a control or regulating element, particularly a voltage-stabilized control or regulating element, and with relatively power-intensive power consumers such as switch relays, motors, controlled heating resistors or lamps that are actuated by the control or regulating element. Not only do such power consumers require an appropriately dimensioned power supply, but the power supply should also produce only relatively little stray hear, should require little space and should be economically manufacturable. The use of a capacitive, so-called capacitor power pack should be assured.
In the known circuit arrangements for the power supply of such devices, the control or regulating elements and the power consumers are connected electrically parallel to one another and to the power supply. In particular, the power packs therein must be appropriately dimensioned in terms of their power. The development of stray heat and the space required are correspondingly high and the costs of acquisition are considerable. The use of a capacitive power pack is often impractical in such circuit arrangements for dimensioning-related and economical reasons. Also disadvantageous is that a universally employable power supply is provided for reasons of economy and efficiency in devices of the species initially cited wherein only one or more power consumers can be provided, this universally employable power supply having to be designed therein for the apparatus having the highest energy consumption, thus having to be designed with a relatively large space requirement, a relatively great stray power and high acquisition costs.
SUMMARY OF THE INVENTION
The object of the invention is to avoid these disadvantages of the known arrangements and to create a circuit arrangement for the power supply of devices of the species initially cited which cannot only be universally employed in a plurality of apparatus having a different number of power consumers but which also exhibits a relatively low development of stray heat, a low space requirement and also economically enables the use of what is referred to as a capacitor power pack.
This objective is achieved with a circuit arrangement which has a purely capacitive power supply, at least one power consumer, and a control element for causing power to be supplied to the power consumer. The power supply, the power consumer and the control element form a series circuit. The power consumer may have a relay activated by a means for switching, such as a transistor. The means for switching is connected to the control element. The purely capacitive power supply has a series capacitor for defining the current flow in the series circuit. The circuit arrangement may have a plurality of power consumers connected in series with each other and the power supply and the control element.
What is advantageous in this circuit arrangement is not only the simple, electrically optimum and economical structure of the power supply, particularly with a capacitor power pack with voltage rectification, but also the relatively small space requirement and the extremely low development of stray heat that can be achieved therein, not only in the power pack but also in the power consumers. Further advantageous therein is that, in particular, the windings of inductive power consumers can serve as a dropping resistor during operation not only for a provided stabilization of the supply voltage of a control or regulating element but can also act as a l
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Achim Storz
Remigio Ros
Dieter Grasslin Feinwerktechnik
Ip Paul
Shoop Jr. William M.
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