SU760456A1 - Scaling device - Google Patents

Description

The invention relates to a pulse technique and can be used to divide the pulse repetition frequency in the low and infra-low frequency ranges.

A counter is known that contains counting relays, the windings of which are connected to counting buses through closing contact groups. The disadvantage of the counter is the limited functionality of £ 1]. ten

Also known is a counter containing the input relay, the initial state setting circuit and the discharge relays, the windings of which are connected to the counting buses through the closing contacts .. 15

The disadvantages of the meter are the complexity and limited functionality of £ 2 "). ·

The purpose of the invention is to simplify the device and expand its functional capabilities (2).

To achieve this goal in a scaling device assembled in a ring circuit containing an input relay, a resistor, a discharge relay with two to 25 groups of closing contacts, parallel to the windings of which the diodes are connected counter to the supply voltage and the first terminals of the windings are connected to the first terminal of the source pi - thirty

2

A resetting bus, two counting buses and a relay circuit for resetting, in which the time-sensitive capacitor is connected in series with the winding of the reset switch between the first and second terminals of the power source, the switching contact of the input relay is connected to the second terminal of the power source, which is closed (short) contact - to the first (second) counting bus, to which the second terminals of the windings of odd (even) bit relays are connected, through their first make contacts, in parallel to which the second closes are connected latching contacts of discharge relays of the previous discharge In addition, the second terminals of the windings of the odd relay through. the newly introduced bipolar keys of their discharge and the corresponding closing contacts of the installation relay to the initial state are connected to the second terminal of the power source.

FIG. 1 is a schematic diagram of the device; FIG. 2,3,4 -. timing diagrams of the device, respectively, in the modes of formation of pulse sequences with a period equal to four periods of the input sequence of pulses,

760456

pulses with the same period and single pulses with a period equal to twice the period of the input sequence of pulses.

The device contains an input relay 1 with a switching 2, disconnecting the 3rd closing 4 contacts, a resistor 5, a discharge relay 6, -6 _in with two groups of closing contacts, in parallel to the windings of which the diodes 7 are connected to the supply voltage and the first pins are fainting connected to the first bus 8, the power source, two counting buses 9 and 10, and a relay circuit for resetting, in which the time-dropping capacitor 11 is connected in series with about-5 coils of the relay 12 of the reset state between the first and second buses - 8 , and 8 _g power supply, switching contact 2 of input relay 1. is connected to the second bus 8 ₄ power supply sources, its opening (closing) contact 3 (4) is to counting bus 9 (10), to which the second windings of odd (even) terminals are connected a) of the bit relays through their first closing contacts of 13 contacts 13 ,, 13 ^, 13 ₅ , 13 ₇ ', (14 ₂ , 14 ₄ ,

14 ₀ , 14 _a ), in parallel with which are connected the second closing contacts 15,15 ₃ bit relays of the previous discharge. In addition, the second pins of the windings of the odd bits of the relay through again. * Entered two-pole keys 16,, 1b ₂ ,

16a ,, 16 ^ of its discharge and the corresponding closing contacts 17,, 17 ^,

17¾, ₁₇ April relay 12 of the plant to the initial state are connected to the bus _{2 August} sources ³⁵ supply nick. Output pulses are removed from tires 18, 19, 20, 21.

In the course of operation, the device provides the formation of either one imdd pulse for the period of the output signal, or groups of AND pulses for the same period. For the formation of a single pulse for the period of the output signal, one of the keys 16, -1¾ closes. Let, for example, before switching on the power, close the key 45, 16. When the supply voltage is switched on, relay 12 briefly triggers due to the charge of capacitor 11. The output impulse (C, ₂ in FIG. 2) of the initial state setting circuit 50 through the closed key 16 enters the winding of relay 6, as a result of which it is set to lock with its pin 13, and its pin 15, prepares the switching circuit 55 of the relay 6 ^ (and ₆ , in figure 2).

When the first input pulse appears on the winding of the relay 1, the positive output-bus 8 · 2 of the power source is supplied. is connected by pins 2, 4 to bus 10, 60

as a result, the relay 6 is triggered (υθ ₂ in FIG. 2) and is set to lock with its contact 14 ^, and the relay 6 is turned off. Contact 15 _g prepared a circuit for switching on the relay 6¾. 65

During the switching of the group of contacts 2,3,4 relay 6, remains in the on state due to the action of diode 7 connected in parallel with the windings of all discharge relays /

At the end of the first pulse, a group of contacts 2,3.4 is set to the initial position, and a relay 6 срабат (and $ ₈ in Fig. 2) is activated, which prepares the switching circuit of relay 64 by contact 15 ₃ ; Then the processes are repeated similarly. After the fourth input pulse, the circuit is set to its original position and a new work cycle begins.

With the bus 18 remove the output pulses, the duration of which is determined by the duration of the input pulses, and the repetition rate - the number of counting relays. For the circuit in FIG. 1 division factor is four. To obtain a division factor equal to n, include 2η counting relays.

From tires 19,20,21 remove the same pulse sequences as from tire 19, but shifted relative to each other at time T (and _6. , And., And _A.

in fig. 2). ... ⁶ .

If you need to get a different order of impulses on the output tires before starting work, instead of the key 16, you close the other key. So, for example, when the key 16¾ is closed, a pulse appears on the bus 20 on the first input pulse, and then after a time T on the next steps.

To form a group of pulses, an appropriate number of bipolar switches is closed before switching on the supply voltage.

. . · FIG. 3 shows the voltage diagram for the case when the keys are closed 16, and 16 ₂ . In this case, when the supply voltage is turned on, the relays 6 and 6 ₂ are set to lock in groups of 13, and 13¾, respectively (and ₆ , and in FIG. 3). When the input pulses on the relay 1 on the input tires are formed pairs of impchls, following with a period of 4T (see. 17 _6} , 1 / _b4 ,

^on fig.Z).

To obtain three pulses in each group, three are closed, a key, etc. The sequence of a group of pulses is also determined by the number of counting relays in the scaler.

In the proposed device, the division ratio can be changed quite simply. To do this, ¹ close the keys 16, - Ι64 through one.

FIG. 4 shows the voltage diagram when the keys 16 are closed, and 16¾. At the outputs of the device, pulses are generated with a repetition period of 2T. Thus, the division ratio is reduced from four to two.

Technical and economic effect from the use of the proposed device is expressed in the simplification of the device

five

760456

b

n in expanding its functionality.

The simplification of the device is achieved by eliminating the opening contact groups of the counting relays. This allows you to perform the device with the use of high-speed and economical reed relays that have only closing contact groups.

Expansion of functionality lies in the fact that the device provides for the formation of not only single pulses, but also groups of pulses with a predetermined number of pulses in a group. In addition, the proposed device allows you to simply change the division ratio and the order of output pulses.

Claims (1)

Claim A counting device assembled according to a ring circuit containing an input relay, a resistor, discharge relays with two groups of closing contacts, parallel to the windings of which diodes are connected oppositely to the supply voltage and the first terminals of which windings are connected to the first power supply terminal, two counting buses and a burdock installation circuit to the initial state, in which the timed capacitor is connected in series with the winding of the installation relay to the initial state between the first and second terminals of the power source, I distinguish ⁵ i so that, in order to simplify . device and expanding its functionality, the switching contact of the input relay is connected to the second terminal of the power source, its opening (closing) contact - to the first (second) counting bus, to which the second terminals of the windings of the odd (even) bit relays are connected through their first closing contacts , 15 parallel to which are connected the second closing contacts of the discharge relays of the previous discharge, in addition, the second conclusions of the windings are odd. Relay through the newly introduced bipolar 20 keys of their discharge and the corresponding closing contacts of the resetting relay are connected to the second terminal of the power supply.