SU684725A1 - Controllable pulse generator - Google Patents

Description

one

The invention relates to radio engineering and can be used in automation and measurement technology.

A pulse generator is known in which the frequency switching can be carried out in discrete steps 1.

The disadvantage of this device is the need to use devices that dissolve each chain from the rest of the control voltage.

The closest technical solution to the present invention is a device for converting a droken code to a time interval containing an encoder (code converter), devices for delaying the number of code bits, keys, driver. Delay devices are connected in series, and the control inputs of the keys are connected to the outputs of the corresponding bits of the encoder and the input pulse can pass either through the key or through the corresponding delay device depending on the signals of the encoder 2,

The disadvantage of the described device is the need to use delay devices with a delay time much greater than that of keys.

The purpose of the present invention is to expand the frequency range and expand the functionality of the device, namely the possibility of forming a series of pulses with a controlled tracking frequency.

Claims (2)

The goal is achieved by the fact that, in the controlled pulse generator containing the driver, encoder, devices for delaying the number of code bits, keys whose control inputs / ids are connected to the outputs of the corresponding bits of the encoder, connected to the output of the imaging device and to the input of the first key, the output of which is connected to the input of the first delay device, the second input of the And element is connected to the bus of the strutting signal, the remaining inputs are connected to the outputs of the device operatio ns delay, the output of each delay device is coupled to the input of a subsequent key, the output of which is connected to the house WMOs subsequent delay device and the output element and connected to an input shaper. Fig. 1 shows a block circuit of a controlled pulse generator; figure 2 shows the time diagrams. The controlled pulse generator contains delay devices 1,2,3, the inputs of which are connected to the outputs of the corresponding keys 4,5,6. The control inputs of the keys 4,5,6 are connected to the outputs of the corresponding bits of the encoder 7, and the other inputs of the keys 5,6 are connected to the outputs of the delay device 1,2. The same outputs of the delays 1,2 and 3 are connected to the inputs of the And 8 element. One of the inputs of the And 8 element is the generator 9 input, a. the output of the element And 8 is connected to the input of the generator 10. The output of the generator 10 is connected to the input of the key 4 by one of the inputs of the element And 8 and is the output 11 of the generator. The controlled pulse generator operates as follows. When a signal is applied to the control inputs of keys 4,5,6 they open, in the open state at the key output there is a signal applied to the input, in the closed state there is always a signal at the key output, Let the keys be 4.5. In the initial state, the signals at the output of the spinner 10 (the outputs of the delay devices 1,2,3 (Ug at the outputs of the keys 4,5,6 U - ,,.) Are equal. Since at the gate input 9 of the generator there is in the initial state the signal O (Ugx9) g then the output of the element And 8 is also the signal O (Usbixa) - When the signal TUj is applied, the gate 9 of the device (time tj) at the output of the element 8 sets the signal i () the triggering driver 10. shaper 10 sets signal O () with duration T tj (specified by the circuit) shaper output signal 10 is fed to the input of the key 4, to the output 11 of the generator and to one of the inputs of the element And 8. At the same time, the output of the element And 8 is O (Ugbtxe). The signals at the outputs of the keys 4,5,6 and delay devices 1,2, 3 (respectively, YOU "4 Bb015 outlets BblXV Bb1" 2,) are shown in the diagram (Fig. 2) If the delay time of each of the delay devices 1,2,3 is shorter than the output time of the signal; 0 at the output of the imaging unit 10 at the corresponding inputs of the element AND 8 signal O will be present until such time as the trailing edge (time t) of the signal and G (10ne shaper propagates through delay 1,2,3 device to the first private key (instant tg time). As soon as all the inputs of the And 8 element are set to signals B 9 off, the signal 1 (Ugjji g), which starts the driver 8, will also be set at its output, and the whole cycle repeats until the signal ( Ugx, is the time t). Thus, at the output of the generator, a series of pulses appears, the duration of which is determined by the duration of the signal O () formed by the driver 10, and the follow-up period depends on the total delay time of the delay devices connected to the first private key. The introduction of the new element And allows you to expand the private range of the generator, and the introduction of new connections allows the formation of a series of pulses with a controlled tracking frequency. This generator can be effectively used to create, for example, high-speed integrators, as well as to build devices with automatic frequency stabilization. Claims of the invention A controlled pulse generator comprising a driver, an encoder, delays by the number of code bits, keys whose control inputs are connected to the outputs of the corresponding bits of the encoder, in order to expand the frequency range and function capabilities, the element I is entered into it, one input of which is connected to the output of the imaging device and to the input of the first key, the output of which is connected to the input of the first delay device, the second input of the element And n dklyuchen bus strobe signal, the other inputs are connected to outputs zascherzhki devices, the output of each delay device is coupled to the input of a subsequent key, whose output is connected to the input of the subsequent Zsscherzhki device and the output element 5 and connected to the input fo 1mirpr ltel. Sources of information taken into account in the examination of f "472S 1. U.S. Patent No. 3,909,748, cl. 311–117, 30.09.7i. 2. Author's testimony of the USSR №508927, cl, H 03 K 13/24, 03/30/76. , and ex. R { , , 6