SU394943A1 - RING COUNTER PULSES - Google Patents

Description

one

The invention relates to the field of pulsed technology.

Circular pulse counters are known that contain countable bits on thyristors connected in series with the load and a constant voltage source, switching capacitors connected between the discharge outputs, communication transformers whose primary windings are connected in series with the diodes between the input pulse bars and the output of each counting bit, and the secondary ones are connected to the control switch of the thyristor of the next bit, and an integrating C-circuit connected between the output of the last bit of the counter and n rvichnoy transformer it winding communication bias resistor connected between the input terminal and schinoy power source and the input transformer is connected in series with an isolating capacitor.

For the purpose of initial installation of the first discharge of the counter to the conducting state, the first counting pulse in the proposed device is a bias resistor connected to the power supply terminal to which the loads are connected, and a resistor is connected parallel to the capacitor / C circuit.

The drawing is a diagram of the reverse version of the proposed counter.

The proposed counter contains counting bits of thyristors 1, 2, and 3, connected in series with a 4-l power source with loads of 5, 6, and 1, and switching capacitors 8, 9, and 10, connecting the outputs of the counting bits. The thyristor control circuits include communication transformers 11, 12, and 13, the secondary windings of which are connected to thyristor control junctions, and

primary successively diodes 14, 15, and 16 are connected between the input width of 17 direct counting and the outputs of the thyristor bits.

The primary winding of the transformer 13,

connected in series with the diode 16, connected to the discharge output on the thyristor / via an integrating / C-circuit consisting of a resistor 18 and a capacitor 19, ground by resistor 20. A bias resistor 21 is turned on between the input thickness 17 and the power supply terminal. The windings of the transformers, connected in series with the diodes 22, 23 and 24, are used in the countdown. The input transformers 25 and 26 are connected to the forward and reverse counting cables and are separated from the power supply by the capacitor 27.

The counter works as follows. When power is applied, all the thyristors remain off, and the switching capacitors are discharged, capacitors 19 and 27 are charged to a part of the supply voltage depending on the ratio of resistors 18 and 20. Through open diodes 16 and 23, the anodes of which are connected to capacitor 19 , the voltage across this capacitor is attached to the cathodes of all the other diodes and closes them. Therefore, the first counting impulse arriving at the input transformer 25 (with forward count) or transformer 26 (with counting down) causes the inclusion of only one thyristor.

In the forward run, the first input pulse passes from the transformer 25 through the diode 16 and turns on the thyristor 3 through the transformer 13. In reverse counting, the input pulse from the input transformer 26 passes the diode 23 and turns on the thyristor 2 through the transformer 12. after switching on the first pulse of the thyristor 3, the voltage of the cathode of the thyristor 5 is applied to the anode of diode 15. Through the open diode 15 this voltage goes to bus 17 and locks diodes 14 and 16. Due to this, the second direct pulse is transmitted through the open diode 15, only the thyristor 2 is turned on.

After switching on the next thyristor, the previously switched on thyristor is switched off by means of a switching capacitor. The counter works apologichically in the event of the arrival of the following counted pulses at the inputs of a direct or reverse count. After switching on the next thyristor, the positive voltage pulse on the plates of the switching capacitors discharges the capacitor 27 through the primary windings of the communication transformers, diodes and through the input transformer and thus excludes the possibility of switching on the next thyristor from one counting pulse.

Subject invention

An annular pulse counter containing counting bits on thyristors connected in series with the load and a source of direct voltage, switching capacitors connected between the outputs of the bits, communication transformers, the nervous windings of which are connected in series with the diodes between the input bus bar and the output of each bit yes, and the secondary ones are connected to the thyristor control transition of the next bit, integrating the / C-circuit connected between the output of the last digit of the counter and the primary winding of the transistor communication circuit resistor

the bias connected between the input bus and the power supply terminal and the input pulse trapsformer connected afterwards, optically with a coupling capacitor, characterized in that, for the purpose of the initial installation of the first discharge of the meter, in the conductive state with the first countable pulse, The bias resistor is connected to the power supply terminal to which the loads are connected, and parallel to the capacitor

/ C-circuit resistor included.

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