SU1064339A1 - Selector switch for electric circuits - Google Patents

Abstract

ELECTRIC CIRCUIT SWITCH containing a multi-digit shift register, each cell of which is a double-wound ferrid with actuation and release windings and two reed switches, one of which is switching, characterized in that, in order to expand functional possibilities by means of simultaneous activation of several electrical circuits with their sequential switching off, the switching contact of the switching reed switch of the last cell ferrid is connected to the output intended for switching off the positive terminal of the generator of control pulses, the disconnecting contact of this reed switch is connected to the start windings of all the cells' ferrides, the switching contact of the switching reed switch of the ferride of each cell except the latter is connected to the closing contact of the switching reed switch of the subsequent cell ferride, respectively, the closing contact of the switching reed switch the first cell ferride is connected to the start of the winding, releasing the ferride of this cell, the opening contact of the switching reed switch ferrid of each hour Menus except the last is connected to the start winding Ferriday releasing the subsequent cell, respectively, and the ends of the actuation and release windings 5 Ferriday all cells connected to a terminal intended dp connecting the negative terminal of the generator control pulses constituents.

Description

The invention relates to programing devices in the field of automatics and switching technology and can be used in automatic control systems, control, measurement and communication of various branches of technology as a pulsed multiplexing switch of electrical circuits. A multi-item electric circuit switch is known, which contains a control body in the form of a ferrid diode shift register and an executive body on ferrides. The switch consists of n cells of the same type, each of which contains a ferromagnetic core, on which control windings, magnetically controlled contacts (reed switches) and a permanent displacement magnet tH are located. The disadvantages of this switch are relatively high complexity and large size and mass. This switch does not implement the function of simultaneous switching of loads with their subsequent sequential switching off. .. The closest to the proposed technical entity is an electrical circuit switch containing a multi-bit shift register, each cell of which is a double-winding ferride with actuation and release windings and two reed switches, one of which is switching C2. The disadvantage of this device is that it performs sequential switching on and simultaneous shutdown of all loads, which reduces the functionality of the device. The purpose of the invention is to enhance the functionality of the switch by providing simultaneous switching on of several electrical circuits with their sequential switching off. The goal is achieved by the fact that the switch of electrical circuits containing a multi-bit shift register, each cell of which is a two winding ferride with windings Slab and release and two reed switches, one of which switches the switching contact of the switching reed ferron of the last cell connected with an output intended for connecting the plus terminals of the generator of control pulses, the disconnecting contact of this reed switch is connected to the beginnings of the windings of the actuation of ferridosis in The switching cells of the switch of the ferrite of each cell except the latter are connected to the closing contact of the switching reed switch of the subsequent cell, respectively, the contact contact of the switching reed switch of the first cell of the ferrid of the switch of the ferride of the cell, the opening contact of the switching switch of the ferride of each cell the latter is connected to the start of the release ferrite winding of the subsequent cell, respectively, and the ends of the windings of actuation and release of the ferrido in all cells they are connected to a terminal intended for connecting the negative terminal of the generator of control pulses. On . 1 is a circuit diagram of an electrical circuit switch; on fi-g. 2 - the cyclogram of its functioning. The switch consists of n cells of the same type I, 2 g each of which has a ferromagnetic core 1 of material of average magnetic rigidity, on which windings 2 and 3 operate and release, respectively, and switching 4 and load 5 reed switches. The windings are connected oppositely, and their common point connecting the ends of the windings is connected to the common point of the generator 6 control pulses (.IR1. The winding 2 actuations of each ferride must ensure the magnetization of the core 1 to saturation and its reed switches 4 and 5. The release winding 3 should provide demagnetization of the core of the ferride, which will ensure the release of the reed switches. The switching reed switches 4 of each cell are intended for switching the internal circuits of the switch - actuation and release windings. The 5 s of each cell are intended for switching external loads 7.1, 7.2, ..., 7p of the switch. The load reed switches can be either switchable or switching. The switch of electrical circuits is connected to the GI through the switching contact of the switching reed switch of the last cell (the last ferride), This contact forms the input of an electrical switch and is connected to the positive terminal of the control pulse generator. The opening contact of the switching reed switch of the last cell is connected with the beginning of the windings of the operation of the ferrides of all the cells. The closing contacts of the switching reed switches of each cell except the first one are connected respectively to the switching contacts of the switching reed switches of the previous cell, forming a blocking circuit. The closing contact of the switching switch of the first cell is connected to the winding 3 of the release of the first cell. The opening contacts of the switching reed switch of each cell except the last one are connected to the start winding of the release cell of the next cell, respectively.

The above scheme for connecting contact details of reed switches and windings of an electrical circuit switch ensures that all cells and their loads are turned on simultaneously and are switched off sequentially.

Switching of electrical circuits is controlled by short-time square-wave pulses, the duration of which is determined by the time of magnetization of the core. The duration of the control pulses must not exceed the response time of the ferrid reed switches. The frequency of the control pulses is determined by the response time of the ferride, i.e. the interval between the control pulse and must be longer than the response time of the ferride, which is practically determined by the maximum response time of the reed switches used in the ferrite.

We offer the switch works as follows.

In the initial state, let the cores of the ferrides of all cells be demagnetized, the windings de-energized, and the state of the contacts of the reed switches is as shown in FIG. 1. Then, the first control pulse from the GI will come through the closed contacts of the reed switch 4 of the last cell to the windings 2 of the operation of the ferrides of all the cells. This will magnetize the cores of the ferrides of each cell and trigger their reed switches 4 and 5. Switching the reed switches 4 of all ferrides by switching contacts (closing the switching and closing contacts) connect the release winding 3 of the first cell to the GI, interlocking the blocking circuit. Load reed switches of all cells will also work, which will ensure the inclusion of the corresponding loads (Fig. 2). This state of the electric circuit switch is stable, since the magnetized cores of all the ferrides will keep the contacts of the reed switches in a closed state even after the end of the pulse. The second impulse OTG enters through the switching and closing contact, you are switching the reed switch of the last cell through the blocking circuit to the winding 3 releasing the first cell. There will be a demagnetization of the core 1 of the first cell ferrid and the release of the contacts of its reed switch. The clocks of the reed switches of the first cell are returned to the vehicle. to its original position (as shown in Fig. 1 |. This will break the interlock circuit of the power supply of the winding 3 to release the ferride

5 of the first cell (switching and eamykaklatsy contacts of the switching hero 4 of the first cell are open). The reed switch 5 will shut off the load 7.1 (Fig. 2, intulse 2). Third

0 the impulse from the GI will go through the blocking circuit and the closed contacts of the switching reed switch 4 (switch and disconnect) of the first cell to the winding 3 of releasing the ferride of the second cell. Degaussing will occur

5 core ferride second cell and releasing the contacts of its reed switches. Switching reed switch 4. The second cell will break the chain | lock and connect to the GI winding 3 release

0 next cell. The load reed switch 5 of the second cell will disconnect the load current 7.2 (Fig. 2, impulse 3 t. C - the impulse GI will go to the release winding of ferrid (cell

5 and turn off its load. In this case, the reed switch 4 (fi -1) cells will break the blocking circuit and connect the h-cell release winding to the GI, and the load

The reed switch 5 of this cell will switch off the 7p load (h-lJ. The next (n + 1) -and the impulse from the GI will go into the winding of releasing the last cell. Demagnetizing the core of the last cell will cause the contacts to be released

5 reed switches of this cell. Switching

- the last cell of the last cell again connects the ferrides of all the cells to the GI winding, and the load reed switch loads 7p. The circuit reverts the 0s to the initial state, and the noBif loop is in progress.

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FIG. Z

Claims (1)

ELECTRIC CIRCUIT SWITCH containing a multi-bit shift register, each cell of which is a double-wound ferride with actuation and release windings and two reed switches, one of which is switching, characterized in that, in order to expand the functional capabilities by ensuring the simultaneous inclusion of several electrical circuits with them. by successive switching off, the switching contact of the switching reed switch of the last cell ferride is connected to the output intended for connecting the positive terminal of the control pulse generator, the opening contact of this reed switch is connected to the beginning of the operation windings of the ferrides of all cells, the switching contact of the switching reed switch of each cell except the last connected with the make contact of the switching reed switch of the ferride of the subsequent cell, respectively, the make contact of the switching reed switch of the ferride the first cell is connected to the beginning of the release coil of the ferride of this cell, the opening contact of the switching reed switch of the ferride of each cell except the last is connected to the beginning of the release coil of the ferride of the next cell, respectively, and the ends of the actuation and release windings of the ferrides of all cells are connected to the terminal intended for connecting the negative terminal control pulse generator. I / O