SU1633484A1 - Antichatter device - Google Patents

Abstract

This invention relates to the field of m 1 lylopop technology. The purpose of the invention is to expand the scope by providing bounce protection for a paraphase output signal. The device contains a synchronous D-trigger, an asynchronous trigger, an element LNN-NOT, a delay element, while at the outputs of the synchronous D-trigger a para-fea signal is generated that is protected from the bounce pulses of the input signal. 2 Il.

Description

The invention relates to a pulse technique and can be used in automation and computing devices, for example, in the generation of control signals.

The purpose of the invention is to expand the scope of application for the account. provide bounce protection for a pa-phase output signal.

Figure 1 shows the functional diagram of the device; in FIG - temporary diagiach; his works.

A device for protection of the voltage (input signal ci; iepi synchronous D-flip-flop 1, uir.iit. The input of which is connected to the high-level power supply circuit and the clock choke to the input bus of the device and the first input of the element IL lH -IIb 2. The second input of the element IPI-NOT 2 podkl; n to the input of the installation zero asin /. Trigger trigger 3 and through the element 4 of the delay with the inverse output of the synchronous

D-flip-flop 1, connected by the input of the zero setting to the direct output of the asynchronous trigger 3, the input of the installation in the unit of which is connected to the output of the OR-NOT 2 element.

 The delay element 4 can be made in the form of a capacitive integration run, in order to increase the temperature stability of the delay time and which can be set at its output by a forming trigger H g and t.

The device operates as follows.

After turning on the power, if a zero voltage level is present at the device input, the triggers I and 3 are reset to the initial zero state. The time of bringing the device to the initial state does not exceed the delay time of signal propagation in the delay element 4.

The first positive front of the input pulse device

(L

about

with so

42

oo

four

the signal of the signal (fn.2a) switching the D-trigger I to the state of the logical unit (Fig. 26, c). The signal of the logical unit stored at the output of the delay element 4 prevents the bounce pulses through the OR-NOT 2 element and keeps the asynchronous trigger 3 in the initial zero state. At the input of the zero setting, synchronously with the D-tripper 1, there is a jr zero voltage level, which excludes the repeated triggering of the trigger from the grinding pulses.

After the delay time of the operation of the element 4, the delay at its output appears zero at the spike (flash 2 g), POD1 from the pick-up device to receive the greedy front of the input pulse. Moreover, the delay time of propagation of a signal in 1emst 4 delay should not be less than the time of the presence of bounce-1 pulse on the fronts of the current and the pulse.

On the first negative front of the gchots signal (Fig. 2a) on yr - J ie - elements ШШ-11Е 2 formed n - perceptive and perspach. nmpulya ;; ycianoBKn in asynchronous trigger 3, Asynchronous trigger J, having set up a single state (Fig. 2e), causes the synchronous D-trigger 1 on the IHOFIKM lip of the zero state to its original zero state (Fig. 2b, c) and holding it polo / kenya, independently of g with g-stacks of pulses of a drebe and l at the command input,

Through the delay time of the signal propagation in the element 4, a positive voltage level is formed at its output (Fig. 2d), causing the zero level to appear at the unit input to the asynchronous unit 3 (Fig. 2e) and reset it to the initial zero state ( Fig. 2c) at the zero input (Fig. 2d).

In this case, the device returns to its original state and is ready to receive the next input signal.

Thus, at the outputs of the synchronous D-Tp.ir r 3p a 1, you form a paraphase of the signal, “z-ta. Valuable oi” of pulses of chatter p of the unpowered signal. 4 O p h h a ri i o b ete n i

YcTpoi ciBo d i -kills from bounce, with iep / at the most synchronous D-trigger, control .. vl. in KOTI of a high-level connection, high-frequency i-rs mountains and a delay element, about 1 and a delay, 41), with an extension of the i4er application protection protection oi pair J jia snot about the output tiiii Ti, into it n of the subsoil and the element Sh1I-H, IK of the opening, boropoio is connected to

I SHOULDER AND TECTONIGM INPUT

 i Chron M o D-ip.nrepd, the inverse NAUCH of which the delay of the delay

It is located with the lorpm in the sequence of the AND 1 and NES element and the zero input of the asynchronous ipmrepa, the common input with the first input with the output of the OR-Hb element, and the right side with the input of the zero-setting of the synchronous D-trnper.

Claims (1)

Acquisition Formula A device for protection against bounce, containing a synchronous D-trigger, the control input of which is connected <. with a high-level job bus, asynchronous ”trigger and delay element, with the stipulation that, in order to expand the scope of application by providing protection against d rattling of a paraphase output signal, a PLATE element is inserted into it, whose first input is connected to a suitable bus and clock input of a synchronous D-trigger, whose inverse output is connected via a delay element to the second input of the OR-HE element and the zero input of an asynchronous trigger connected by a single input to the output of the OR-HE element, and the direct output with installation input and zero synchronous D-flip-flop.