SU993472A1 - Switching apparatus - Google Patents

Description

(54) SWITCH

This invention relates to. pulse technology and can be used in radio relay stations, such as sending signals from the wireline side.

A known switchboard containing a series-connected choke, a diode rectifying bridge, and an executive relay 1.

However, this device has low sensitivity, low input resistance and large dimensions.

: The closest to the proposed is a switch containing an input quadrupole, the inputs of which are connected to the control buses, and the outputs are connected to the first diagonal of the rectifying bridge, and an executive relay.

The disadvantages of the known device are also low sensitivity and large tabarites.

The purpose of the invention is to increase the sensitivity and reduce the size.

The goal is achieved by the fact that the switch containing the input quadrupole, the inputs of which are connected to the control buses, and the outputs are connected to the first diagonal of the smart bridge, and the receiver is connected to the relay, a two-voltage converter, a storage capacitor , and a source of constant voltage, and the active quadrupole inputs are connected to the second diagonal of the rectifying bridge, and the outputs - to the inputs of the first converter

10 voltage to current, the output of which is connected to the input of the second voltage to current converter and through a storage capacitor to a common bus; the output of the second converter

15 the voltage to the current is connected to the control input of the electronic key, the first output of which is connected to the first bus of the constant voltage source, and the second through the winding of the executive relay to the second bus of the source of constant voltage. nickname is made on the transistor emitter

25 of which is connected to the first input of the active four-port network and through a pulse filter, in parallel to which a zener diode is connected, to the woofer input of the active four-pole 30, the collector of the transistor is connected to the second input of the active four-pole network, through a diode parallel to which a circuit of series-connected resistor and winding is connected, control of the JMaTopa transformer, the base of the transistor is connected to the second output of the active four-terminal network through the master resistor and to the first output - through a series connection nye audio excitation winding and a differentiating circuit, the output of the transformer under the key to the outputs of the active four -pole. The drawing shows the structures on the scheme of the proposed device. The switch contains an input impedance driver 1, connected to the first diagonal 2 of a diode rectifier bridge. The active medical amplifier 3, connected to the second diagonal 4 of the diode rectifying bridge, contains a resistor 5, the emitt of which is connected to the first output of the active quadrupole directly to the second output via a pulse filter b, and one-sided Limiter 7, for example a silicon zener diode, a collector is connected to the second output of the active circuit of the rechpole through the shunt diode 8 and the transformer control winding 9 connected in series and the limiting resistor 10, the bae is connected to the second and first the outputs of the active quadrupole, respectively, through a current-conducting resistor 11 and the excitation winding 12 and the differentiating circuit 13 are connected in series. The load winding 14 is connected to the input of the first voltage to current converter 15, the output of which is connected to the storage capacitor 16 and through the second voltage to current converter 17 the input of the electronic switch 18 connected to the executive relay 19. The input control voltage with a frequency of 16-50 Hz is fed to the first diagonal 2 of the diode rectifying bridge Erez input impedance generator 1 configured as a resistive quadripole which obviates the bypass channel symmetric two-wire telephone circuit by the switch devices. The rectified inductor call voltage taken from the second diagonal 4 of the diode rectifying bridge is fed to the active quadrupole 3. Transistor 5 turns out to be in linear mode using the current-supply resistor 11. Due to the positive feedback that occurs between the control windings 9 and drive 12, transistor 5 becomes saturated. The dwell time of the transistor 5 in the saturated and locked states is determined by the time constant of the differentiations. Circuit 13. The magnitude of the collector saturation current of transistor 5 is limited by resistor 10. One-sided 0; grader made on a silicon Zener diode and shunt diode 8 protects transistor 5 from a collector junction sample. Pulse filter 6 accumulates. energy when the transistor 5 is locked, and returns it when the saturation of the transistor 5. The voltage pulses on the load winding 14 of the transformer are converted into current by the first voltage transformer 15 in the current. The storage capacitor 16 converts high-frequency current pulses into a direct voltage, which through the second voltage converter 17 unlocks the electronic switch 18. The latter controls the state of the executive relay 19. In the proposed switch, the introduction of a high-frequency pulse control voltage,. allows to provide galvanic isolation, significantly change the requirements for the input circuit of the switch. The input of the switch device is not a power circuit, as in the prototype, but a low-power signal, thereby increasing the sensitivity of the switch device and the possibility of replacing large-sized heavy heavy low-frequency droplets with a high resistance resistive quadripole 1. In addition, the rectifier bridge can be implemented on low-voltage low-power diodes, the sensitivity requirements of the executive relay L are drastically reduced. Thus, in the proposed switch, sensitivity and input impedance are increased, as well as reduced dimensions and weight, since large non-microminiaturization-sized elements are eliminated, and the new nodes introduced are implemented as a single hybrid chip. The formula of the invention is 1, a switch containing an input quadrupole, the inputs of which are connected to control buses, and the outputs are connected to a pinch diagonal of a rectifying bridge, and an executive relay, characterized in that, in order to increase the sensitivity and reduce the size, an active four-pole is introduced , two voltage converters, a current, a storage capacitor, and a constant voltage source, with the succinct two-port network connected to the second diagonal rectifier bridge, and the outputs to the input The first converter, voltage to current, the output of which is connected to the input of the second voltage to current converter and through a storage capacitor to the bus, the output of the second voltage to current converter is connected to the control input of the electronic switch, the first output of which is connected to the first bus source constant voltage, and the second through the executive relay - with the second bus voltage source.

2. The switch according to claim 1, characterized in that the active quadrupole is made on a transistor, the emitter of which is connected to the first input of the active quadrupole and through a pulse filter.

parallel to which a zener diode is connected - to the second input of the active four-port network, the collector of the transistor is connected to the second input of the active four-pole network through a diode, in parallel to which a circuit of a series-connected resistor and control winding of the Transformer is connected, to the base of the transistor the first output is through a serially connected excitation winding and a differentiating circuit, the transformer output winding connected to the active quadrupole Schlokhod. .

Sources of information taken into account in the examination

1. Markov V.V. Low-channel radio-linear communication lines. M., Soviet Radio, 1963, p. 289, fig. 3.77.

2. Yakub Yu.A. Theory of distant communication. M./Svyaz, 1966, p.216 proto.typ. . :

Claims (2)

Claim 1, a switch containing an input four-terminal, the inputs of which are connected to the control buses, and the outputs are connected to the first diagonal of the diode rectifier bridge, and an executive relay, characterized in that, in order to increase sensitivity and reduce the dimensions, an active four-terminal, two voltage converters are introduced; ··. into the current, the storage capacitor and a constant voltage source, the active four-terminal being connected to the second diagonal of the rectifier bridge by inputs and outputs to the inputs of the first converter, voltage to current, the output of which is connected to the input of the second voltage to current converter and through the storage capacitor - with a common bus, the output of the second voltage-to-current converter is connected to the control input of the electronic switch, the first output of which is connected to the first bus of the DC voltage source, and the second d - through the winding of the executive relay - with the second bus of the DC voltage source. 2. The switch by π. 1, distinguished by the fact that the active four-terminal is made on a transistor, the emitter of which is connected to the first input of the active four-terminal and through a pulse filter in parallel with which a zener diode / is connected; - to the second input of the active four-port, the collector of the transistor is connected to the second input of the active four-port through a diode, in parallel with which a circuit is connected from the resistor and the control winding of the transformer connected in series, the base of the transistor is connected to the second output of the active four-terminal through a current-setting resistor and 'to the first output - through series-connected field winding and a differentiating circuit, and the output winding of the transformer 15 connected to the outputs of the active four lusnika.