SU449437A1 - Random Pulse Generator - Google Patents

Description

one

The invention relates to a pulse generator for various purposes, may

be used for high voltage PI

tani microwave devices, laser diodes, Gunn diodes.

Known random-pulse generators are known, including latching diodes and triggering diodes, a random voltage generator, a current source, charge and discharge inductances, a storage capacitor, an amplifier, a square pulse generator, a voltage divider across resistors, and a normally open key device, the output the current source through the fixing diode, the charging and discharge inductances is connected to the load, and the output of the random voltage generator through. the amplifier and the start-up diode are connected to the input of a square-wave generator, the output of which is connected to the control electrode of the thyristor, and a storage capacitor is connected between the charge and discharge inductances, the second terminal of which is connected to the current source.

The purpose of the invention is to increase the reliability of the device by the fact that, in the proposed generator, a normally open key device is connected between the current source and the amplifier output, the control input of which is connected to the cathode of the fixing diode through a voltage divider.

FIG. 1 shows a diagram of a random pulse generator; in fig. 2 shows the stress diagrams.

A random pulse generator consists of a current source 1, a random voltage generator 2, an amplifier 3, and a divider. voltage 4, a normally open key device 5, a fixing diode 6, a starting diode 7, a rectangular pulse generator 8, an output device 9, a charging inductance 10, a storage capacitor 11, a thyristor 12, a discharge inductance 13, and feedback 14.

The generator works as follows. The supply voltage from the current source is supplied to the random voltage generator 2, the amplifier 3, the normally open key device 5, the square impulse generator 8. and the generator input circuit consisting of charging inductance 10 and the storage capacitor 11. Cumulative the capacitor is charged before the supply voltage. The start-up diode 7 is the perth key device 5, and the noise voltage (Fig. 2a) does not pass to start the square pulse generator 8.

The first start of the thyristor 12 occurs at the frequency of self-oscillations of the generator 8, which is chosen so that

get at the output of the generator maximum period. After charging the capacitor 11 (see Fig. 26), a reverse voltage is applied to the cathode of the fixed diode 6 (see Fig. 2c), which is zero at the first charge and then, at the end of the transition process, reaches the supply voltage.

When the reverse voltage (see Fig. 2c) applied to the clamp diode,

reaches the value of U $ E, grub n

Cheat unit 5 is locked by feedback 14, and the square pulse generator 8 is synchronized by the voltage of the noise. By adjusting the threshold for triggering the key device 5 by a voltage divider 4, it is possible to almost completely eliminate the synchronization by the voltage of the noise of a square pulse generator

at the time of completion of the transient process in the discharge circuit of the generator and thereby increase its reliability.

Subject of the invention:

Random pulse generator containing latching diodes and start-up D1shdy,. generator of random voltage source

current, charge to discharge inductance, storage capacitor, amplifier, generator of rectangular pulses, divider is stressed on resistors and normally open key device, the output of the current source through the fixing diode, charged and discharged inductance is connected to the load, and the output of the generator of random voltage across the amplifier and the start-up diode - with the input of the generator

rectangular pulses whose output;

connected with the control electrode of the thyristor, and between the charge and discharge inductors is a cumulative. a capacitor, the second speed of which is connected to a current source, characterized in that, in order to increase generator reliability, a normally open key device is inserted between the current source and the amplifier output

the input of which is connected to the cathode of the clamping diode through a voltage divider on the resistors. sh-

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