SU1531197A1 - Device for checking clock pulse generator - Google Patents

Abstract

The invention relates to electrical measuring equipment and can be used to control a clock pulse generator. The aim of the invention is to improve the reliability of the device. The device for monitoring the clock pulse generator contains a Schmitt trigger 1, an actuator 2, a T-trigger 3, and integrating circuits 5 and 6. The introduction of block 7 for selecting the larger of the two signals improves the reliability of the device by simplifying it. 2 Il.

Description

SRG.1

The invention relates to electrical measuring equipment and can be used to control a clock pulse generator.

The purpose of the invention is to increase the reliability of work.

FIG. 1 is an electrical block diagram of the device; in fig. 2 - time diagrams of his work.

The device for monitoring the clock pulse generator contains a trigger 1 IITit, an actuator 2 and a T-trigger 3, the input of which is connected to the input bus 4, and the direct and inverse outputs are connected respectively to the inputs of the first 5 and second 6 integrating circuits of the two signals, the first and second inputs of which are connected to the outputs of the first and second integrating circuits, respectively, and the output through the Schmitt trigger 1 is connected to the input of the executive body 2.

Block 7 can be performed on a voltage follower, the input of which is connected to the load and to the cathodes of the diodes, the anodes of which are the inputs of block 7.

The device works as follows.

Clock pulses from the input bus 4 (controlled generator) arrive at the input of trigger 3 (Fig. 2a), which forms on the first and second output a square wave with a frequency half the frequency on the executive body (Fig. 26, c). The signals from the outputs of the trigger 1 are fed to the inputs of the integrating circuits 5 and 6. The signals at the outputs of which (Fig. 2d, e) alternately increase and decrease exponentially. The signals from the outputs of the integrating circuits arrive at the inputs of the block 7 for the selection of the larger of the two signals (FIG. 2e). The constant time of the integrating circuits 5 and 6 is chosen so that the signal on the choice of block 7 does not have time to rise to a level equal to the trigger threshold of trigger 5, as a result of which the signal on its output (Fig. 2) is constant npHcvTCTByeT and executive unit 2 does not work .

When stopping the arrival of clock pulses at the device input

trigger 1 stops working. A single signal is established at one of its inputs, so the signal at the output of the integrating circuit connected to this output continues to increase. This leads to an increase, for example, at the output of block 7 (fig.2e) to a level exceeding the trigger threshold of trigger 1. Schmitt trigger 1 (fig. 2g), actuator 2 actuates.

Claims (1)

Invention Formula A device for controlling a clock pulse generator, containing a Schmitt trigger, an actuator and a T-trigger, the input of which is connected to the input bus, and the direct and inverse outputs are connected respectively to the inputs of the first and second integrating circuits, increase reliability in operation, a block for selecting the larger of two signals is entered into it, the first and second inputs of which are connected to the outputs of the first and second integrating circuits, respectively, and the output through the trigger is connected to the executive input RGANI. FIG. 2 Compiled by V. Chizhikov Editor G, Volkova Tehred M. Didyk Proofreader M. Kucher va Order 7965/55 Circulation 884. VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and publishing plant Patent, Uzhgorod, st. Gagarin, 101 Subscription