SU1453632A1 - Illumination control system - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is to reduce the number of wires connecting the power buttons and ease of operation by allowing the time relay to restart. The device contains buttons for switching on I time relay 2, power switch 3, lighting lamps 6, three-winding transformer 7. When you press any of the on buttons I through the first primary winding of the three-winding transformer 7, the lighting lamps 6 and the turn on button 1 begins to flow. The secondary winding of the transformer 7 is the voltage applied to the start of the time relay. 2, which turns on the power switch 3, as a result of which the lighting lamps 6 are turned on. When the power button is released, the currents flowing through the primary windings become equal to each other and cancel each other out. After some time specified time relay 2 turns off and turns off the power switch 3 and the lighting lamps 6. 2 Cp f-ly, 3 ill. (f, C

Description

1

12

12

The invention relates to electrical engineering and can be used to turn on lighting in extended rooms from several places for a predetermined time interval.

The purpose of the invention is to reduce the number of wires connecting the power buttons.

FIG. - 3 shows examples of the device.

The device of FIG. 1 (main variant) contains buttons 1 on, relay 2 on time, power switch 3, circuits 4 and 5 for connecting lighting lamps 6, three-winding transformer 7, two of which are the primary windings .8 and 9 of which are connected in series in chains A and 5 lamp connections, the secondary winding 10 of the transformer 7 is connected to the contacts 11 of the start of the relay 2 time, the output of the relay 2 time to the control input of the power switch 3.

Buttons 1 are connected between the wire of the circuit 4 of the connection of the lighting lamps and the neutral of the power circuit 12. Pins 13 and 14 must be connected to the lighting network. For this device variant, pin 14 must be connected to the neutral wire 12 of the power circuit. Parallel to the contacts of the buttons 1, neon lamps 15 in series with resistors I6 or other indicators can be switched on to enable searching for buttons in the dark. The diagram does not show the power supply circuit of the time relay 2.

The second variant of the device (Fig. 2 is different in that the buttons 1 are connected to the wire 5 of the connection circuit of the illumination lamps 6 through the current-limiting elements 17. In this embodiment, the network contact 14 can be either connected or not connected to the neutral of the power circuit 12, pin 13 must not be connected to neutral.

- The third variant of the device (Fig. 3) is characterized in that the power-on buttons 1 are implemented with switching contacts. The movable contact of each button through the lighting lamp 6 is connected to the wire of the lamp connecting circuit 5, normally closed to the wire of chain 4, normally open to the neutral 12. In this embodiment, the network contact 14 can be either connected or not connected to the neutral.

five

0

50

5 0 5

0 З

0

five

circuit 12, pin 13 must not be connected to neutral.

The device of FIG. 1 works as follows.

In the initial state, time relay 2 and illumination lamps 6 are turned off. When pressing any of the I buttons from pin 13 through the winding 9, lamtsy 6 and button 1, a current begins to flow, the secondary winding 10 of the transformer 7 appears and the voltage applied to the contacts 11 of the time relay 2. The time relay 2 switches on and turns on the power switch 3, as a result of which the lighting lamps 6 turn on. When the button 1 is released, the currents, flowing through the windings 8 and 9, become equal to each other and compensate each other.

The voltage across winding 10 becomes zero. After some time, the relay 2 times turns off and turns off the power switch 3 and the lighting lamps 6.

Some drawback of the device of FIG. 1 is the impossibility of extending the lamp on time by pressing the buttons 1 again with the lamps on.

In the devices of FIG. 2 and 3, this deficiency is eliminated. The inclusion of a time relay in the devices of FIG. 2 and 3 is the same as in the device of FIG. 1, however, pressing any of the buttons 1 when the lamps are on. leads to the difference of currents through the windings 8 and 9 and the re-start of the relay 2 time. The difference in the winding currents in the device of FIG. 2 is determined by the current of the current-limiting element 17, for which a wire resistor, a low-power incandescent lamp, a thermistor with a positive temperature coefficient of resistance, a capacitor, and a choke can be installed. In the device of FIG. 3 current-limiting element is excluded, the difference in primary currents. The transformer windings are determined by the current of one lighting lamp 6, but button 1 with switching contacts is required.

Claims (3)

1. A lighting control device containing power buttons, a time relay, a power switch, lamps for lighting, the first terminals of which are connected to the first output for connecting the network, and the second outputs through the power switch - with the second output of the network connection, the first terminals of the contact of the on buttons is connected to an output for connecting the neutral wire. The closing contacts of the switch-on buttons are connected with one of the lighting lamps. 2. The device according to claim 1, which is designed so that, for the purpose of ease of operation by allowing the time relay to restart, sequentially with; The time relay output is connected to the control of the switch-on buttons and complementing the input of the power switch, characterized in that, in order to reduce the number of wires connected to the switch-on buttons, a three-winding transformer with two identical primary windings is inserted into it, the first of which is connected between the first leads of the lighting lamps and the first lead to connect the network, and the second is connected between the second lights, illuminate the lights of the lamps and the power key, and connect the current leads to the lighting lamps The unique elements and the second ones of the closing contact of the switch-on buttons are connected with the first lights of the lamps. 3. The device according to claim 1, characterized in that, for the purpose of ease of operation by allowing the timer to be restarted, the on buttons are provided with opening contacts, by means of which the second primary winding of the three-winding transformer is connected to the same name wires, the secondary the transformer winding is connected to 25 current lighting leads triggering input of a time relay, bt-lamps. The closing contacts of the switch-on buttons are connected with one of the lighting lamps. 2. A device according to claim 1, in accordance with claim that, for the purpose of ease of operation by allowing the time relay to restart, sequentially; additional current-limiting elements are included with the switch-on buttons, and the second ones of the closing contact of the switch-on buttons are connected with the first lights of the lamps. is 3. The device according to claim 1, characterized in that, for the purpose of ease of operation by allowing the timer to be restarted, the on buttons are equipped with opening contacts, by means of which the second primary winding of the three-winding transformer is connected to the corresponding lighting terminals Jl F1L1 G1L / .j