SU1267592A1 - Control device for pulse transmitting valve - Google Patents

Abstract

The invention relates to a pulse technique. It can be used in radio transmitters for various purposes. The aim of the invention is to expand the functionality. An additional transistor 5 of the type rt-p-n capacitor 6, resistors 7, 8, 9 are introduced into the device to achieve the set goal by providing a pulse generator lamp with a positive bias on the grid. The device can be used with lamps that have (Left and right features (Leristics, which leads to the expansion of its functionality. 1 ill. + I /,

Description

The invention relates to a pulse technique and can be used in personal radio transmitters.

The aim of the invention is rhenium functional by ensuring the operation of a pulsed generator lamp with a positive offset on the grid.

The drawing shows a schematic diagram of a device.

A device for controlling a pulsed generator lamp comprises a n-ρ-π type transistor 1, a pulsed generator lamp 2, a first resistor 3, a second resistor 4, an additional transistor 5 of the r-p type, a capacitor 6, a third resistor 7, and a fourth resistor 8 fifth resistor 9.

Positive power bus is connected. a yen with an anode of lamp 2, the grid of which is connected to a common bus, the cathode is connected through a resistor 3 to the collector of transistor 1 and the second output of resistor 4, and through a resistor 7 to the collector of transistor 5. The base of transistor 5 is connected to its emitter through resistor 8, and with common bus. through a resistor 9. A capacitor 6 is connected between the collector of the transistor 1 and the emitter of the transistor 5. The second output of the resistor 4 is connected to the positive bus of the bias source, the negative bus of which is connected to a common bus and the emitter of transistor 1, the base of which is connected to the control signal bus.

A device for controlling a pulsed generator lamp operates as follows.

In the absence of control pulses based on transistor 1, lamp 2 is closed due to the high resistance of the closed transistor 1 in its cathode. At the same time, a voltage of several tens or hundreds of volts is set on the cathode of lamp 2 and at the same time on the collector of transistor 1. This voltage charges the capacitor 6 through resistors 3, 8 and 9 in such a way that a positive potential is formed at the terminal of the capacitor 6 connected to the transistor 1, and a negative potential is formed on the plate connected to the transistor 5. Transistor 5 is closed by voltage across resistor 8, which forms 1267592 when the charging current of capacitor 6 flows through it.

When a pulse is applied to the base of transistor 1, transistor 1 opens and due to its low output resistance, resistor 3 and capacitor 6 are connected to a common bus. In this case, the capacitor 6 charged up to the lamp-locking voltage of the lamp 2 turns out to be connected in parallel with the chain of resistors 8 and 9.

The voltage generated at the resistor 8 opens the transistor 5 and, through an open transistor 5, the voltage of the capacitor 6 is applied to the chain of resistors 7 and 3. In this case, the negative voltage on the resistor 3 is an additional unlocking voltage for the lamp 2. The load line on the grid characteristic of the lamp 2 is shifted to the right, and the working point goes into the region of positive offsets on the grid. The magnitude of this bias depends on the voltage to which the capacitor 6 is charged, and can be controlled by the choice of resistors 7 and 3.

After the end of the control pulse based on the transistor 1, it closes, the lamp 2 and the transistor 5 are closed.

The capacitor 6 begins to recharge with voltage; from the collector of transistor 1. When the next up35 equalizing pulse arrives, the cycle repeats.

’The device for controlling a pulsed generator lamp allows a positive bias to be obtained on the lamp grid and therefore can be used with lamps that have both left and right characteristics, which expands its functionality.

Claims (3)

The invention is from a pulsed technique and can be used in radio transmitters for various purposes. The aim of the invention is to extend the functionality by ensuring the operation of a pulse generator lamp with positive mixing on the grid. The drawing is a schematic diagram of the device. A device for controlling a pulse generator lamp includes a pnp type transistor 1, a pulse generator lamp 2, a first resistor 3, a second resistor 4, an auxiliary transistor 5 of the pnp type, a capacitor 6, a third resistor 7, a fourth resistor 8, the fifth resistor 9, the positive power bus is connected to the anode of the lamp 2, the grid of which is connected to the common bus, the cathode through the resistor 3 is connected to the collector of transistor 1 and the second output of resistor 4, and through the resistor 7 to the collector of transistor 5. Base trans of the 5 is connected to its emitter h cut resistor 8 and with a common bus through a resistor 9. Capacitor 6 is connected between the collector of transistor 1 and the emitter of transistor 5, the second lead of resistor 4 is connected to the positive bus of the bias source, the negative bus of which is connected to the common bus and emitter of transistor 1 The base of which is connected to the non-control signal bus. The device for controlling the pulse generator lamp operates as follows. In the absence of control pulses at the base of transistor 1, lamp 2 is closed due to the large resistance of the closed transistor 1 in its cathode. At the same time, a voltage of several tens or hundreds of volts is established at the cathode of lamp 2 and simultaneously at the collector of transistor 1. This voltage charges the capacitor 6 through the resistors 3, 8 and 9 in such a way that at the output of the capacitor 6 connected to the transistor 1, a positive potential is formed, and on the lining,. connected to the transistor 5, is negative. Transistor 5 is closed by a voltage across a resistor 8 forming 2 when an eard current flows through it of capacitor 6. When a pulse is applied to transistor 1, transistor 1 opens and due to its low output impedance, resistor 3 and capacitor 6 are connected to a common bus. At the same time, the capacitor 6, which is charged up to the voltage of the lamp 2, is connected in parallel to the chain of resistors 8 and 9. The voltage generated on the torus 8 opens the transistor 5 and through the open transistor 5 the voltage of the capacitor 6 is applied to the chain of resistors 7 and 3. In this case, the negative voltage across the resistor 3 is an additional unlocking voltage for the lamp. 2. The load line on the grid characteristic of the lamp 2 is shifted to the right, and the operating point goes into the region of positive displacements on the grid. The magnitude of this bias depends on the voltage up to which the capacitor 6j is charged and can be adjusted by choosing the values of the resistors 7 and 3. After the termination of the control pulse at the base of transistor 1, it closes, closes lamp 2 and transistor 5. Capacitor 6 begins to be energized by the voltage from collector of transistor 1. When the next control pulse arrives, the cycle repeats. The pulse generator lamp control device allows a positive offset of; lamp grid and therefore can be used with lamps having both left and right characteristics, which leads to an expansion of its functionality. Apparatus for controlling a pulse generator lamp, comprising a pulse generator lamp, the anode of which is connected to the positive power supply busbar, the grid is connected to the common bus and negative bus power source, and the cathode through the first resistor is connected to the collector of the pnp type transistor, the emitter of which is connected to the common bus, and the bases a is connected to the control signal bus, the second resistor, the first terminal of which is connected to 1267592 a positive bus source bias resistors, and the cathode is imni, the negative bus of which is a soy-pulse generator lamp through a dinen with a common bus, is distinguished by the third resistor connected to the collector and with the aim of increasing the additional transistor n- p-functions of the type j, the emitter of which is connected to ensure the operation of a pulsed-out capacitor to the collector of the trans-generator lamp with a positive pn-type capacitor and the second output offset on the grid, a resistor is inserted into it, the base is With its additional transistor .n-p-hter across its fourth resistor, the stipa, the capacitor, the third, fourth Q common bus through its fifth resistor.