SU77645A1 - Electromagnetic counting mechanism - Google Patents

Description

The invention is an electromagnetic counting mechanism using a gas-light lamp connected in series with the winding of an electromagnet at the terminals of a potentiometer, which is used to supply electrical pulses to the counting mechanism. The proposed electromagnetic counting mechanism allows to increase the reliability of the counter operation with short and distorted forms of electric pulses.

A distinctive feature of the proposed mechanism is that the bark of an electromagnet is provided with a contact that shunting a part short of a full deflection; the potentiometer resistance to reduce the voltage supplied to the lamp is lower than the extinction potential of the lamp. This ensures that the electromagnet is triggered regardless of the form of the applied electrical pulses. The drawing is a schematic diagram of the electromagnetic counting mechanism.

The power of the winding of the electromagnet 1 of the counting mechanism is carried out from an auxiliary source. Issue 10, 1949

The stationary current 2, connected in series with a controlled non-roll-off thyratron or gas-light lamp 3 and a load of co-current 4, through which the current of the control pulse flows.

A locking thrust contact 6 is mounted on the bark 5 of the counting mechanism; it closes through part 7 the resistance part of the potentiometer 8. The locking occurs at the end of the working stroke of the core after mechanical counting. This provides automatic exposure of the duration of the rectangular pulse to the time of the entire working stroke of the core.

The supplied control electrical impulse creates a voltage on the load input resistance 4, which is added to the voltage on the potentiometer 8, in the surrounding voltage. from the current flowing in the circuit of the auxiliary source of direct current 2.

The position of the slider of the potentiometer 5 is set in such a way that the potential arising on it is lower than the ignition potential and higher than the potential of the gas luminaire 3.

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The gas lamp 5 is ignited when there is an additional voltage received from the incoming electric pulse, and remains lit during the entire working period of the movement of the core 5.

The anchor 5 with its blocking contact 6 closes the contact 7, as a result of which a part of the resistance of the potentiometer 8 is shunted and the gas light lamp 3. goes out.

When the core 5 returns to its initial position, the circuit of the blocking contact 6 is broken and the counting mechanism restores its original position. The potentiometer motors 8 are used to adjust the sensitivity of the electromagnetic counting mechanism.

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Subject invention

Electromagnetic counting mechanism using a gas-lighted lamp connected in series with the winding of an electromagnet to the terminals of a potentiometer, which is used to supply electric pulses to it, characterized in that the electromagnet’s bore is provided with a contact, when fully deflected the core by a short-circuiting part of the resistance of the potentiometer to reduce the voltage on the lamp, below the value of the extinction potential of the latter, in order to ensure the operation of the electromagnet, regardless of the form their impulses.

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