SU1441468A1 - Pulse shaper with voltage doubling - Google Patents

Abstract

The invention can be used to increase the output pulses of the pulse amplifiers. The purpose of the invention is to expand the area when-. changes by increasing the load capacity and expanding the range of the duty cycle of the generated pulses. After parallel charging of storage capacitors (K) 1 and 2, the signal through optoelectronic pairs 12 and 13 and resistors 14 and 15 is fed to transistors (T) 0 and 11, opening them and connecting them in series K 1 and 2. As a result, the diodes ( E) 6 and 7 are closed, and a negative polarity pulse is approximately equal in amplitude to twice the voltage of the power source, opening D 16, is applied to the load, opens T 8 and closes T 3. D 4 and 5 prevent other ways of discharge K 1 and 2 . At the time of termination of the input pulse T 10 and 11 are closed, the discharge on the load stops, T 8 closes, and T 3 opens and a quick charge occurs. K 1 and 2. D 16 prevents the supply of a positive voltage generated by a direct voltage drop on D 6 to the load. 2 hp f-ly, 1 ill. (L with

Description

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The invention relates to a pulse technique and can be used in various equipment to increase the amplitude of the output pulses from a pulse amplifier.

The purpose of the invention is to expand the field of application of the pulse former by increasing the load capacity and expanding the range of the duty cycle of the pulses.

The drawing shows a pulse shaper circuit with voltage doubling.

A double-voltage pulse shaper contains accumulative capacitors 1 and 2, field-effect transistor 3, diodes 4-7, field-effect transistor 8, resistor 9, bipolar transistors 10 and 11, optoelectronic 20 pairs 12 and 13, resistors 14 and 15, diode 16, where the first pin of the capacitor 1 is connected to the cathode of diode 4, the collector of the transistor 10 and the first pin of the resistor 14, the second pin of which through the output circuit of the optoelectronic pair 12 is connected to the base of the transistor 10, the emitter of which is connected to the anode of the diode 7 and the first output of the capacitor 2, the second A view of which is connected to the cathode of diode 5, the collector of transistor 11 and the first output of resistor 15, the second terminal of which through the output circuit

The rptoelectronic pair 13 is connected to the base of the transistor 1I, the anodes of the diodes D and 5 are connected to the source of the transistor 3, the drain of which is connected

with a terminal for connecting power, and through a resistor 9 with a gate 40 of transistor 3 and a drain of transistor 8, the source of which is connected to the cathode of diode 16, the anode of diode 6 and the second terminal of capacitor 1, the anode of diode 16 is connected to the terminal for connecting 45 load, the emitter of the transistor 11, the cathodes of diodes 6 and 7, and the gate of the transistor B are connected to the common bus; the inputs of the optoelectron-jQ pairs 12 and 3 are connected to the input terminals of the pulse former.

The pulse shaper with voltage doubling works as follows.

After parallel charging of the storage capacitors 1 and 2 g-lionic, the signal released from the control circuit through optoelectronic pairs

12 and 13 and limiting resistors

14 and 15 are fed to the input of switching (bipolar) transistors 10 and 11, which open, connect in series capacitors 1 and 2, causing the diodes 6 and 7 to close, and a negative polarity pulse, approximately equal in magnitude to twice the source voltage power, opening the diode 16, enters the load and at the same time, by opening the transistor 8, closes the transistor 3,

Diodes 4 and 5 prevent other ways of discharging storage capacitors, except through the switching transistors, diode 16 and the load.

When the input pulse stops, the transistors 10 and 11 close, the capacitance to the load is stopped, the transistor 8 is closed, and the transistor 3 is biased by applying bias through the resistor 9, resulting in a fast charge of capacitors 1 and 2 across the circuit: plus power supply, transistor 3, diodes 4 and 5, capacitors 1 and 2, diodes 6 and 7, and minus the power supply. Fluid 16 prevents the supply of positive voltage, which is caused by the direct voltage drop across diode 6, to the load.

Claims (2)

Invention Formula one . A pulse shaper with voltage doubling, containing the first and second storage capacitors, the first diode, the first and second switching elements, and the first plate of the first storage capacitor is connected to the first plate of the second storage capacitor through the first switching element, in order to expand fields of application, four diodes and a third switching element are inserted in it, the second lining of the first storage capacitor connected to the anode of the first diode, rvym third input of the switching element and the cathode of the second diode, the anode of which is connected with a terminal for connecting a load, the second input of the third element is connected to kommutirzgyuschego terminal for connecting polozhitelnogo- poles of the power source, and output - with the anodes of the third and chetverto3 The diodes, the cathodes of which are connected respectively to the first plate of the first and second plates of the second storage capacitor, the cathode of the fourth diode is connected to the first end of the second switching element, the cathodes of the first and fifth diodes are connected to the common busbar, the third input of the third and second end of the second commutator elements, with the first plate of the second storage capacitor, the anode of the fifth diode is connected; the first inputs of the first and second switching elements are connected to the first input terminal, and the second inputs are connected to Torah input terminal, 2. Shaper according to claim 1, 1, and t — characterized in that the first and second switching elements are made in the form of a transistor switch, the collector of which is connected through a series-connected resistor and output element of an optoelectronic pa The connectors are connected to the base, the collector of the transistor is connected to the first output of the switching element, the emitter is connected to the second output of the switching element, and the input of the optoelectronic pair is connected to the control voltages of the first and second switching elements.  3, The shaper of claim 1, 1, of which the third switching element is provided in the form of a transistor switch comprising the first, second field-effect transistors and a resistor, the drain of the first transistor connected to the gate of the second. transistor and the first output of the resistor, the second output of which is connected to the drain of the second transistor, the source and gate of the first transistor, the drain of the second is connected respectively to the first, third and second inputs of the switching element, and the source of the second transistor to the output.