SU452032A1 - Device for automatic control of dynamic advertising. - Google Patents

Description

I

A known device for automatically controlling an advertisement, comprising a driver unit connected to a switching circuit, the output of which is electrically connected to the output stages, is not sufficiently reliable and durable.

In order to create decorative advertising lighting effects, the switching circuit contains series-connected circular reversible and non-reversible counters, a trigger and a reverse unit. The output of which is connected to one of the inputs of the reversible counter, the outputs of the counters are connected to the corresponding output stages, and the master unit is equipped with a frequency regulator . All circuit elements are made on cold cathode thyratrons, and the counters contain photoresistors, a single-stage transistor photoamplifier with a magnetically controlled contact winding as a collector load, the photoresistor being connected to the base circuit of a single-stage transistor amplifier, and the output stages are not triacs with a magnetically controlled contact input flail x

j FIG. 1 shows a diagram of the device; in fig. 2 - switching part of the circuit.

The driver unit is an auto-oscillator 1 having frequency adjuster 2.

The pulses of the oscillator are fed to one of the inputs of the reversible ring counter 3, in series with which is connected an irreversible ring counter 4. The pulses from the last stage

non-reversible counter arrive at

the trigger input 5, which is simultaneously a control signal generating device for the reverser unit 6, from the output of which the signal goes to one of

inputs of the reversible ring counter, and a control signal generating device for the effect control channel blinking. The outputs of the reverse and non-reverse ring counters 3 and

4 are connected to the inputs of output stages 7 and 8, creating lighting effects of a traveling wave with reversal and printing, respectively.

The switching part of the circuit and

unit is made of 9 c) thyratrons with a cold cathode, the use of which

greatly facilitates the design of work associated with setting up and repairing the device. The connection between the switch thyratrons and the output cascades performed on triacs is made using photoresistors 10,;

The respective DC power amplifiers 11 connected to the circuits of the bases, the loads of which are the windings 12 of the magnetically controlled contacts. The latter commute the input circuits of the output from cascades 7 and 8, made on triacs. The master oscillator 1, which is tuned to the Required frequency by the regulator 2, sends signals to the input of the reversible ring counter 3. The latter is intended for current distribution to the effect of a traveling wave with a reverse. Every third pulse through this counter is fed to the input of a non-reversible bit ring ring counter 4, which serves to create a print effect, i.e. group control for light advertising objects in the amount of up to. Trigger 5, receiving control signals from the last cell of an irreversible // - bit ring counter, controls the reverse device 6, thus affecting the reversible counter 3. The output elements of the universal switch are the power stage units 7 for the ring reversing counter 3 for the effect of a traveling wave with reverse and cascades 8 for non-reverse counter 4 per effect printing. Output stages 7 and 8 are made using triacs, the ignition circuits of which are switched by magnetically controlled contacts. Excitation winding 12 of each magnetic control

This contact is included in the collector circuit of the corresponding single-stage transistor photo amplifier. A photoresistor 10 is included in the circuit of the photoamplifier 11, the working surface of which is illuminated by a thyratron 9 at a certain time.

Subject invention

Claims (2)

1. A device for automatic control of dynamic advertising, comprising a driver unit connected to a switching circuit whose output is electrically connected to output stages, characterized in that, in order to create decorative lighting effects, the switching circuit comprises series-connected circular reversing and non-reversible counters, the trigger and the reverse block, the outlet of which is connected to one of the inputs of the reversible counter, the counter outputs being connected to the corresponding output stages, and the master switch ca. frequency regulator is provided. 2. The device according to claim 1, that is, that all the circuit elements are made on cold cathode tiratrons, and the counters contain photoresistors a single-stage transistor photo amplifier with a magnetic contact winding, moreover, the photoresistor is included in the base circuit of a single-stage transistor amplifier, and the output stages are made on triacs with magnetically controlled contacts in the usdshdh chains. ig.1 eleven fpui.2