SU858529A1 - Pulse recurrence rate multiplier - Google Patents

Abstract

An operation line for the production of printed-circuit cards comprises a computer (1) connected to a data input device (2) and, through a conjugating nuit (3), connected to an automatic laser engraving machine, which is mechanically connected with a cassette (5) of model plates and with a printing press (6) mechanically connected with a complex (7) of equipment for mechanical and chemogalvanic treatment of the printed-circuit cards. The automatic laser engraving machine comprises a system (17) for scanning the model plate optically connected with a laser optical system (18). The conjugating unit (3) comprises a switching circuit (8), a requests former (11) and a multiplier of the frequency of repetition of pulses.

Description

eo lh: l

Ф t The invention relates to a pulse technique and can be used in radio engineering devices for various purposes, in particular in a technique for processing and recording information. A pulse multiplying frequency multiplier, which contains differentiating chains, an inverter, a full-wave rectifier and a threshold block lj, is known. A disadvantage of this device is its limited functionality. The closest in technical essence to the invention is an impulse following frequency multiplier containing a full-wave expander, the output of which is connected to the filter input and the first inputs of the comparators, the second inputs of which are connected to the outputs of the voltage divider, the input of which is connected to the output of the filter, and the outputs with the inputs of the adder 2j. The disadvantage of this device is limited functionality, since with its help the pulse frequency cannot multiply N times and the input voltage to H0 be sinusoidal. The purpose of the invention is to expand the functionality by obtaining a multiplication factor equal to N. To this end, a pulse multiplier containing a series-connected filter, a voltage divider, a comparators and an adder are inserted into the frequency multiplier, which are connected in series to a pulse shaper and an amplitude detector, the voltage divider is made with (outputs, each of which is connected to the first input of the corresponding comparator, the second input of which is connected to the output a sawtooth voltage regulator, and an output with a corresponding adder input whose additional input is connected to the output of the pulse former Fig. 1 is a block diagram of the deviceJ in Fig. 2 are time diagrams explaining its operation. The device contains a pulse former 1, and a former 2 saw different voltage 5 amplitude detector 3, filter 4, voltage divider 5, comparators, Ummat-6 7. The device works as follows. The shaper 1 receives a periodic signal, the frequency of which should be multiplied. It is converted into pulses whose parameters do not depend on the shape and magnitude of the amplitude of the input signal (Fig. 2a). These pulses are fed to the inlet of shaper 2. The sawtooth pulses (Fig. 26) are fed to detector 3, whose rectified voltage is fed to the input of filter A. A constant voltage equal to the sawtooth voltage amplitude is obtained at the filter output. A constant voltage is applied to the input of the divider 5, the (N-1) outputs of which are the (N-1) equipotential voltage levels U, U, ...,). supplied to the first inputs of the comparators The second inputs of the comparators are supplied with a sawtooth voltage from the former 2. (N-1) times during the input voltage period, the current value of the sawtooth voltage increases with increasing voltage levels Uy, U2, ..., and,;, supplied to the inputs of the comparators. In this case, the pulses are formed, which are fed to the input of the adder 7 (FIG. 2B, g, e). The addition of pulses from the outputs of the comparators to the adder and from the output of the imaging device 1 provides at the output of the adder pulses with a frequency of N times the frequency of the input signal. Thus, this device makes it possible to multiply the frequency of a pulse of an arbitrary shape by any number N times, depending on the number of comparators and the corresponding number of times of the voltage divider and the inputs of the adder. This pulse frequency multiplier is universal. It makes it possible to multiply at any given number of times, which leads to a simplification of the construction schemes of the most diverse pulse devices used in information processing systems, computer technology and many other applications.

"{ at

Claims (1)

A PULSE FREQUENCY FREQUENCY MULTIPLIER, comprising a series-connected filter, voltage divider, comparators and adder. Characterized in that, in order to expand the functionality by obtaining a multiplication factor equal to N, a pulse shaper and a sawtooth voltage shaper are introduced into it. and an amplitude detector, and the voltage divider is made with (ND-th outputs, each of which is connected to the first input of the corresponding comparator, the second input of which is connected to the output of the sawtooth voltage shaper, and the output - with the corresponding inputs of the adder, an additional ¹ · input of which is connected to pulse shaper output. Z)