SU566340A1 - Pulse modulator - Google Patents

Description

one

The invention is related to radar and can be used by B devices for generating pulses.

A pulsed modulator containing a power source is known, with a positive pole through a series-connected choke with an additional winding, a charging diode, an energy storage device and a circuit breaker, a busbar of the modulator is connected, Me-Adu bus and input

The energy storage device includes a discharge switching element, a source of start pulses, a control voltage generator connected in series and a pulse-phase control device, the output of which is bridged by the primary winding of a pulse transformer, the secondary winding of which is connected to the control electrode of the control switching element at one end, for example on a thyristor connected in parallel to the input of the control voltage generator, the anode of which is connected to one of the endpoints through a resistor s more charging choke coil, the other end is connected to Torah second end vtorv hydrochloric pulse transformer

  However, this pulse modulator possesses low noise immunity ().

The purpose of the invention is to increase the noise immunity of an impulse motor.

To do this, they have 1 lcd of MScotor, containing a power source, with a positive pole through a series inductor with an additional winding, a charge diode, an energy storage device, a common modulator bus, between which and the energy storage device a discharge switch is connected an element, a source of start-up pulses, a series-connected control voltage generator and a pulse-phase-control device whose output is shunted by the primary winding of an impulse transfo The armature, the secondary winding of which with its one condom is connected to the control electrode of a regulating switching element, for example, a thyristor |, connects the parachute to the input of the control voltage reverter, the anode of which p source is connected to one end of the additional winding of the charge, the other end of which is connected to At the end of the secondary winding of the downstream transducer, the pulse transformer is equipped with an additional MOTKOEj, switched on by the common bus | A pore and a delay device whose output is connected via an impulse generator to one of the inputs of the logic element I, the second input of which is connected to you: the source of the pulse source 3anycKat. And the output is about the input to the electrode of the discharge element.

; : The drawing shows a structural electric circuit of the pulse module {c.

A pulse modulator contains a power source 1, with a positive pole to a csfogr through serially connected aard choke 2 with an additional winding 3, a dual drive 4, a storage unit 5 of the power supply and a load 6 connected to the curtain bus between the modulator bus and the input of the curler 5 energy enabled bit switch | The starting element 7, the source 8 of the start-up pulses, the control voltage generator 9 in series and the pulse-phase switching device 10, the output of which is shunted by the primary winding 11 of the pulse transformer 12 is the secondary winding 13 of which is connected to the control electrode by means of an adjusting electrode switching element (switch) 14 connected in parallel with the input of the generator 9 of the control voltage. The anode of the regulating switching element 14 I through a resistor 15 is connected to one of the Kondov {Additional winding 3 charge path: the village 2, the other horse of which is connected to the second end of the secondary winding 13 of the pulsed transducer of the matrix 12. The pulse transformer 12 is provided with an additional winding 16 included between common bus modulator and the device 17 of the delay, the output of which through the pulse generator 18 is connected to one of the inputs of the logic element And 19, the second input of which is connected to the output of the source of the starting pulse 8, and the output - with control electrodes of the discharge switching element 7,

Their pulse modulator operates as follows.

The HMnvnbCbi start-up of the regulating switching elamena-14 is fed to the input of the delay device 17 from the winding 16 of the pulse transformer 12. These pulses are delayed in the delay device 17 by the time required for the end of the transients in the circuit formed by the winding 3 of the charge throttle 2 regulating the switching element 14 and a resistor 15. The delayed pulses trigger the gene for ator 18 pulses, which forms strobe pulses of constant duration, arriving at one of the inputs of the logic cops and 19.

When the total time interval is equal to or greater than the period of the pulse of the modulator, the start pulse of the switching element 7 to the second input of the element And 19 will cause the appearance of pulses at its output, which ensures the launch of the ward j 7 element 7.

If this condition is not fulfilled (for example, if the source of 8 starting pulses fails), element 19 turns out to be locked, there are no pulses at its output, switching element 7 does not start, which excludes the possibility of loss of controllability of switching element 7, since it will not start when the impulses are received, the starting point is the moments of time preceding the termination of the charge of accumulation 5 in the zeroing of its charge current. This eliminates the possibility of Ez modulator failures due to a short scan in a charged non-, pi. The possibility of lies is also excluded. direct (untimely) operation of the switching element 7 and, consequently, the appearance of false pulses at the output of the modulator.

Claims (1)

1. USSR author's certificate No. 350148, cl. H 03 K 3/53, 1971. VX rviNn f TU, / / -XX-N / eight FROM