DD144635A1 - CIRCUIT ARRANGEMENT FOR SPECIFIC CONTROL, IN PARTICULAR INDUSTRY-ASSISTED CONSUMER - Google Patents

Abstract

The aim of the invention is to reduce the number of Actuators in special power electronic circuits to reduce. Furthermore, the circuit must be through a low component cost and universal usability distinguished. The invention is based on the technical object a universally applicable circuit arrangement for special Control in particular inductance-consuming consumers to create the AC voltage network, in which the number of Actuators is less than the number of consumers. ; According to the invention the object is achieved in that at least one with a pole of an AC voltage source connected electronic switch with its second connection connected to two diodes arranged in opposite directions, that each of these diodes, each with a terminal of the consumer is connected and that the second terminal of the consumer is connected to the second pole of an AC voltage source.

Description

213,948

Circuit arrangement for special control, in particular inductance consumers

Field of application of the invention

The invention relates to a circuit arrangement for special control, in particular inductance-prone consumers preferably on the AC voltage network. A convenient application results in power electronic devices, such as consumer electronics.

Characteristic of the known technical solutions

In many technical devices, it is necessary, certain consumers, such as solenoid valves, simultaneously, combined or individually to control. This is usually done by separate actuators for each consumer, which requires in addition to a large number of actuators also correspondingly high cost for their control. These disadvantages of the known technical solutions also occur when using electronic actuators in an analogous manner.

Object of the invention

The object of the invention is to reduce the number of actuators in special power electronic circuits. Furthermore, the circuit arrangement must

213 94 ö

characterized by a low component cost and universal usability.

Explanation of the essence of the invention

The invention has for its object to provide a universally applicable circuit arrangement for special control in particular inductance consumers on Weehs voltage network, in which the number of actuators is smaller than the number of consumers and the other circuitry is low effort. According to the invention the object is achieved in that at least one connected to one pole of a source of alternating voltage electronic switch is connected with its second terminal to two diodes arranged in opposite directions, that each of these diodes is connected to one terminal of the associated load and that the second terminal the consumer is in each case connected to the second pole of a source of alternating voltage U <v. In the case of inductive loads, freewheeling diodes are arranged parallel to the loads! As electronic switches triac elements are preferably used, which can be controlled by the Hullspannungsverfahren even with inductance load.

An economically particularly favorable solution results in the special control of four inductor-consuming consumer brewers, such as solenoid valves, using two triac switches, which are controlled by an integrated MOS circuit U 706 D.

Embodiment

The invention will be explained below with reference to an embodiment. In the accompanying drawings show:

1: The circuit diagram of an embodiment of the inventive solution with triac elements as electronic switches,

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2: the most important waveforms of the solution according to the invention according to the embodiment of Pig. 1. The embodiment of FIG. 1 contains the electronic switches Th 1 and Th 2, the diodes D arranged in opposite directions in pairs, and the consumers M, for example, magnetic valves with the associated differential diodes ID. The illustrated arrangement is executable for two consumers M with a triac switch as electronic switch Th or even for a larger number of consumers M arbitrarily expandable. Assuming that at the beginning of the positive half cycle of the AC voltage U / v of the control electrode G- of the electronic switch Th 1 is fed Zünditnpuls, so builds up in the load Kj ^ an excitation current; at the same time the diode D-j2 is blocked. At the end of the positive half cycle commutates this exciting current due to now blocking diode D-j-j on the freewheeling diode ED ^, whereby the electronic switch Th 1 is de-energized at the end of the half-wave. This allows the application of the Hullspannungsverfahrens for controlling the triac's even with inductance-consuming consumer M. Depending on the, at the beginning of which half-wave the ignition of which Triacschalters takes place, the consumers M are switched on.

Claims (5)

1. Circuitry for special control in particular inductance sb ehaft et he consumer, characterized in that at least one connected to a pole of an AC voltage (TSro ) electronic switch (Th 1) with its second connection to two oppositely arranged diodes (DJ ₁ , D ₁₂ ), that each of these diodes (D ₁₁ ; DJ ₂ ) is not connected to any one terminal of the associated load (MJ-]; 2 <Lj2 ^ and that the second terminal of the loads (M ₁₁ ; J & ip) is connected to the respective one second pole of an AC voltage (U / V) is connected. 2 · Circuit arrangement according to item 1, characterized in that arranged as an electronic switch triac elements with the control current-carrying main terminal at a common potential. 3 · Circuit arrangement according to item 1, characterized in that the inductance-prone consumers (Ej ₁ J Ej ₂ ) freewheeling diodes (S ¹ DJ ₁ , PD ₁₂ ) are connected in parallel. 4 · Circuit arrangement according to item 1 to 3 », characterized in that the electronic switches (Th) are controlled according to the Hullspannungsverfahren. For this 2 pages drawings - ⁴ - 213 948 invention claim -5 -