SU1177861A1 - Selector switch for electric circuits - Google Patents

Description

The invention relates to automation and switching technology and can be used in automatic control systems, control, measurement and communication of various branches of technology in 5 as a multi-position switch with pulse control, reversible counter _k ^ shift register.

The purpose of the invention is the expansion of functional capabilities by providing 10 * reversible operating mode, h * th * is essential for industrial software automatic control systems.

The drawing shows the principal electrical circuit of the proposed device.

The switch consists of η bits (cells) according to the number of switched loads (electrical circuits) and 20 is an η-bit re-. gistr shift. Each bit 1 is made in the form of a double-winding ferrid with external memory. It has a ferromagnetic core 2 of medium magnetic rigidity material 25, acting as an element of magnetic memory (EP), on which there are two control windings for actuation 3 and release 4, the ends of which are connected to a common switch point, and switching 5, closing 6 and load 7 reed switches. The first 8, second 9 and third 10 diodes for galvanic isolation of the pulses entering the windings are installed in the control winding circuit of each discharge. While the diode 8 in the circuit of the winding operation in each discharge its cathode is connected with its beginning. The anodes of this diode in all digits, except the first, are connected to the closing contact of the switching reed switch 5 of the previous discharge.

The anode of the diode 8 of the first discharge is connected to the closing contact of the switching reed switch 5 of its discharge.

In the winding circuit 4 lowerings of each discharge, two diodes 9 and 10 are installed. A diode 9 in each discharge is connected to the beginning of the release winding 4 by its anode, and to the cathode to one contact of the closing reed switch 6 of its discharge, the other contact of which is connected to the switching contact 55 switching reed switch 5 of its discharge. A diode 10 in each discharge is also connected by its anode to the beginning of the circuit 61 2

4 release bundles and diode cathodes *

10 of all digits are connected and connected to one contact of the closing reed switch 6 of the last discharge, the other contact of which is connected to the input of a zeroing generator.

The switching contact of the switching reed switch 5 of each discharge, except the last one, is connected to the normally closed contact of the switching reed switch 5 of the next discharge. The switching contact of the switching reed switch 5 of the last digit is connected to the input

11 switches to which bipolar control pulses are applied from the input control bus. The cathodes of the third diodes 10 of all digits through the contacts of the closing reed switch 6 ferrite of the last discharge are connected

to bus 12 install in

Thus, connected in series normally closed contacts of switching reed switches of all discharges form a blocking circuit.

Winding 3 operation of each discharge has the number of turns, in which a positive impulse provides for magnetization of the core material EP to saturation. Winding 4 release each discharge has a number of turns, sufficient for demagnetization of the core EP during the flow of a negative pulse. The volume of the core material of the EP is such that the magnetic energy stored in it during magnetization is enough to keep all of the reed switches in the actuated state.

The switch works as follows.

In the initial state, the ferrides of all discharges are turned off, their windings are de-energized, and the state of the reed switch contacts is as shown in the drawing.

 The first positive control impulse is switching on, coming to the input of the switch, passing along the blocking circuit through the normally closed contacts of the switching reed switches of all discharges into the winding 3 of the first discharge. It will magnetize its core to saturation, which leads to the activation of reed switches. In this case, the switching contact of the switching reed switch will open the blocking circuit, turn off the winding of the operation of the first discharge ferride

3 1177861

and connects the winding of the second discharge, the closing reed switch 6 connects to the blocking circuit the release winding of the first discharge, the load hermetic. 7 switches on the first load. In this 5 state, the switch is located until the next control pulse. Suppose that the second control pulse turns off, i.e. negative. It will pass along the blocking circuit 10 into the release winding of the first discharge ferrid through the closed contacts of the reed switch 6. This pulse cannot be passed through the reed switch 5 to the second discharge winding, since the second discharge diode 8 is turned on in the opposite direction. There will be a demagnetization of the core of the first discharge ferride and the return of its contacts to the initial state. The first load will turn off.

Let the third control impulse be again inclusive. Then, as indicated above, the first discharge ferride will turn on again and its contacts ²⁵ will operate, producing an open winding circuit of the first discharge, connecting the second discharge winding and turning on the first load. With the arrival of the fourth - 30th of the positive control impulse (including), which enters the winding of the second-category ferride, its core will be magnetized. Slabo-35 reed reed ferrite second discharge. In this case, the switching contact pere-. The second rechargeable reed switch 5 connects to the blocking circuit the third discharge actuation coil, 40 the closing reed switch connects the second discharge release coil, and the load reed switch 7 switches on the second load.

The fifth control pulse, also 45 including, will go into the actuation winding of the third discharge ferride. It magnetizes the core of the third ferride, which will trigger the activation of its reed switches and the inclusion of the third load. In this case, the coil of operation of the fourth discharge and the coil of release of the third one will connect to the blocking circuit.

The sixth and seventh pulses are negative, they will turn off the ferrides of the third and second digits, respectively, and turn off their loads' ./ Eighth

positive momentum. It will turn on the second-grade ferride and its load. The ninth control impulse is also positive. It will turn on the third grade ferride and its load.

Thus, a positive control pulse arriving in the actuation winding of the ϊth digit ferride triggers its triggering and activates its load. In this case, the blocking circuit of the ΐth digit disengages its actuation coil and connects the release coil. At the same time, a connection is connected to the blocking circuit of the winding of the ferride (x + 1) -th digit. The next positive control pulse will turn on the (G + 1) -th digit and its load, i.e. there will be a shift to the right. If the next impulse is negative, then the ри-th discharge ferride will be turned off, its load, i.e. shift left ..

The Q th positive control pulse will turn on the last ί-th discharge ferrid and its load. In this case, the switching reed switch 5 connects to the second control bus a release winding of the last discharge, and the closing reed switch 6 connects the release winding of all ferrides to the installation bus to “0”.

Further operation of the switch can be continued in two ways.

Or by applying negative and subsequent control pulses to the control input, i.e. making a shift to the left, etc., or by applying a zeroing signal (a signal to the zeroing input. In the second case, a zeroing signal of negative polarity through the closing reed switch 6 of the last discharge ferride will enter the release windings of all discharges of ferrides, demagnetize their cores and return switch to its original state. At the same time, all loads are turned off. Then the cycle of work is repeated.

The switch is controlled by current pulses, the duration of which depends on the core material EP. For cores made of ferrite, the duration of control pulses is several tens of microseconds. For cores made of remanent material, the duration is controlled5

1177861

6

pulses will be several hundred microseconds, which is significantly less than the response time of the reed switches.

Frequency switch properties

depend on response time and

releasing the reed switches. Maximum

5 frequency is 300-400 Hz.

♦ ·

Claims (1)

ELECTRIC CIRCUITS SWITCH containing a multi-digit shift register, each discharge of which is made as a ferride with a magnetic memory element, on which the pickup and release windings are installed, the final outputs of which are connected to the common bus, and the switching and closing reed switches that connect the switching contacts reed switches of all digits are connected to a series of interlocking circuits, one pin of which in the last digit is connected to the input control bus, characterized in that, in order to expand the functionality, three diodes are inserted into each discharge, with the initial output winding of the ferrite of each discharge connected to the cathode of the first diode, the initial output of the release winding to the anodes of the second and third diodes, the anode of the first diode of the first discharge connected with the second output of the • sequential interlock circuit, the anode of the first diode of each subsequent discharge is connected to the closing contact of the switching reed switch of the previous discharge ferride, the cathode of the second diode of each the discharge, except for the latter, is connected through the contacts of the closing reed switch to the moving contact of the switching reed switch ferrite of its discharge, the cathode of the second diode of the last discharge is connected to the closing contact of the switching reed switch of the last discharge, and the cathodes of the third diode of all discharges are connected to the contact of the last discharge ferrid of the last discharge installation in the "About". 1177861 1 1177!