SU1019605A2 - Pulse signal converter using oscillatory circuit with damper - Google Patents

Abstract

CONVERTER OF PULSE SIGNALS ON A VIBRATING CIRCUIT WITH DAMPING DEVICE according to the author. St. No. 864520, characterized in that, in order to expand the functionality by increasing the noise immunity and increasing the dynamic range, the second primary winding of the transformer, the second electronic switch on the field-effect transistor and the second control bus are additionally introduced, and the second electronic switch of the control electrode connected to the second control bus, and the drain and the source - between the end of the first primary ob-, coil and the beginning of the second primary winding of the transformer, the end of which is connected to the common w no O) with O5 about sd

Description

The invention relates to a pulse technique and can be used in radio engineering devices for various purposes, in particular as a converter of a constant or slow varying signal into a harmonic pulse train and as a pulse expander.

According to the main auth. No. 864520 is known a pulse signal converter on an oscillating circuit with a damping device, comprising an input bus, an output bus, a control bus, a common bus, a damping device connected by a control electrode to the control bus, and an oscillating circuit consisting of a parallel-connected capacitor and inductance coil, connected by one output to a common bus, and the other to an input and output bus, while a field-effect transistor and a secondary coil are used as a damping device and the inductance, the connection pin from the midpoint to the common bus, and opposing other ends - to the drain and source of the FET 1.

The disadvantage of this converter is the inability to convert the level of a slowly varying or constant signal. This is due to the fact that for constant and slowly varying signals, the resistance of the inductance is small and the capacitor of the circuit is almost at zero potential, i.e. for a constant and slowly varying signal, the loop capacitor is practically short-circuited by the low resistance of the inductor.

The aim of the invention is to enhance the functionality by increasing the noise immunity and increasing the dynamic range of the device.

This goal is achieved by adding a second transformer primary winding to the pulse converter, a second electronic switch on the field effect transistor and a second control bus, while the second electronic switch is connected to the second control bus and the drain and source between the end of the first primary winding and the beginning of the second primary winding of the transformer, the end of which is connected to the common bus.

The drawing shows the inductance circuit.

The circuit includes the primary windings 1 and 2, the capacitor 3, the key 4 on the field-effect transistor as a current breaker, the damping device 5 on the field-effect transistor, the secondary windings 6, the bus 7 and 8, the key control bus 9, the bus 10

control damping device 5 and a common tire 11.

The initial state of the converter: the key 4 is closed by a control pulse from 5 bus 9, the damping device 5 is opened by a control pulse from the bus 10.

The Converter operates as follows.

Q The control pulse from busbar 9 opens the switch 4, as a result, the current flowing through bus 7 through inductors 1 and 2 switches to capacitor 3 and charges it during the operation of the bus control impulse 9. After the impulse ends, the switch 4 again closes and free damped oscillations occur in the circuit, the amplitude of which is proportional to the current flowing through bus 7.

After measuring, for example, the amplitude of the second half-wave of the damped oscillation, bus 10 is supplied with a control pulse, which transfers the damping device 5 to a high conductivity state. Thus, the secondary windings 6 are shorted, which leads to a sharp decrease in the quality factor of the circuit and the rapid damping of the oscillations, after which the converter switches to the initial state.

Thus, the proposed device has enhanced functionality compared with the known device.

Thus, by introducing key 4, the second primary winding 2, connected according to (via key 4) with the primary winding, and control bus 9, it became possible to transform and change not only pulse signals, but also slowly varying and constant signals. Moreover, the mode of operation is changed only by feeding the control signal through bus 9.

When operating with pulse signals, key 4 is supplied via bus 9 with a constant control voltage holding key 4 in a closed state.

When operating with constant and slowly varying signals, the control pulses are sent to key 4, they open it for the time of charging the capacitor 3. Moreover, the conversion scale is changed by changing the duration of the control pulses on the bus 9, which greatly simplifies the work with the converter and extends the dynamic range of the transformations, since the change in the duration of the control pulse by force of 9 may be from tens of nanoseconds to hundreds of milliseconds.

It is significant that the device has dramatically reduced the impact of the penetration of control pulses from the bus 34

9 through the key 4 to the oscillating circuit, jointly, mutually compensate, which also

since the primary windings for penetrate-allows to expand the dynamic of the pulsing pulses included counter and e d s, zones in the direction of small value and

arising from the action of these pulsed signals.

1019605.

Claims (1)

PULSE SIGNAL CONVERTER ON VIBRATION CIRCUIT WITH DAMPING DEVICE by ed. St. No. 864520, characterized in that, in order to expand the functionality by increasing the noise immunity and increasing the dynamic range, a second primary winding of the transformer, a second electronic key on the field-effect transistor and a second control bus, with a second electronic switch with a control electrode, are additionally introduced into it. connected to the second control bus, and drain and source between the end of the first primary winding and the beginning of the second primary winding of the transformer, the end of which is connected to a common bus. W