SU381156A1 - KIPP-RELAY ON OPTRON - Google Patents

Description

one

The invention relates to a pulse technique. A kip relay can be used in the circuits of automation, measuring and calculating equipment as a generator of rectangular pulses of a certain duration.

It is known a kip-relay on an optocoupler, containing an amplifier at a transistor, the driver time / C-circuit included in the transistor base circuit, an opto-diode consisting of three LEDs, two of which are connected to a source of triggering pulses, and the third - to the emitter circuit an amplifier transistor and one LED, the anode of which is connected to the negative pole of the power supply, and the cathode to the connection point of the capacitor plate with a resistor / C-circuit.

The purpose of the invention is to accelerate the recovery scheme.

My booster relay is different in that the emitter-collector interface of the additional transistor is connected to the capacitor / C-circuit plates, the base of which is connected via a resistor to the amplifier's transistor collector, the emitter of the additional transistor being connected to the transistor base, and the collector to the junction point of the capacitor plate with the resistor. C circuit.

The drawing shows a schematic diagram of the proposed device.

The base of the transistor / is included in the time of the master / C circuit, consisting of a resistor, 2 and a capacitor 3. The LEDs 4-6 constitute an optocoupler. Diodes 5 and 6 are included in the source circuit of the trigger pulses 7, diode 4 is connected to the emitter circuit of the transistor /. The anode of the LED 8 is connected to the negative pole of the power source, and the cathode to the connection point of resistor 2 and capacitor 3. The emitter-collector junction of transistor 9 is connected to the capacitor plates, the base of which is connected to the collector of the transistor / through the JO resistor, and the collector is connected to the connection point of resistor 2 and capacitor plate 3. Resistor 11 is connected to the transistor collector /.

When a short input pulse of either polarity is applied, one of the LEDs 5 or 6 acts on the diode 8 with a short light pulse sufficient to cause the diode to open. A short current pulse passes through a 3 v capacitor. the base of the transistor / and is amplified by it. The amplified current flows through the LED 4, which additionally illuminates the diode 8, as a result of which the base current of the transistor / receives an additional increment.

If the positive feedback ratio P K 1 () 8 is the gain of the transistor Y, / C is the transmission coefficient of the opto-coupler), transistor 1 transforms into an all-out-of-an-avalanche pattern. A saturation current of this transistor flows through the LED. As the capacitor 3 charges, the base current of transistor 1 decreases, and the saturation state remains CS because the transistor was oversaturated.

The capacitor 3 is charged through LED 4, the emitter-base transition of transistor 1 and LED 8, the time constant is determined by the resistance of resistor 2 and the capacitance of capacitor 5. When the base current of transistor 1 decreases to

/to"

/ 6

(/ b-tak; sh, / k-collector saturation current), further decreasing it with a decrease in the collector current, and consequently, the current of the LED 4. LED 8 starts to close, and pranzistor 1 transits into a cutoff state. At this moment, on the base of the transistor 9, there is a negative bias, the transistor opens and the capacitor 3 discharges through its

emitter-collector junction, after which the circuit returns to its original state.

Subject invention

A relay relay on an optocoupler containing an amplifier on a transistor, a time specifying a C-circuit connected to the base of the transistor, an optocoupler consisting of three LEDs, two of which are connected to a source of triggering pulses, and one the LED, the anode of which is connected to the negative pole of the power source, and the cathode to the connection point of the 1H1DVnator plate with the resistor / C-circuit, characterized in that, in order to accelerate the restoration of the circuit, a transition is connected to the plates of the C-circuit capacitor The mitter is the collector of the additional transistor, the base of which is connected through a resistor to the collector of the amplifier transistor, the emitter of the additional transistor is connected to the base of the transistor of the amplifier, and the collector to the junction point of the capacitor plate with the resistor / C-circuit.