SU1709413A1 - Booster - Google Patents

Abstract

The invention relates to a pulse technique and can be applied in devices that provide for the inclusion of an electromagnet. The purpose of the invention is to increase efficiency. The forming device contains input bus 1, first switch 2, current sensor 3, common bus 4, differentiating element 5, comparator 6, control input 7, second switch 8, first power source 9, load 10 (electromagnet winding), diode, second source nutrition Efficiency increase is achieved due to the forced increase in current in load 10 only until the electromagnet is turned on, which reduces losses. The turn-on time is determined by the voltage value at the control input 7. 3 Il. • ^ ?, 11 ° th - ^^^ Ю • VJО Ю ^ со> gt; & FIG. 1

Description

The invention relates to a pulse technique and can be applied in devices that provide for the inclusion of an electromagnet.

The aim of the invention is to increase the efficiency due to the forced increase of the current in the load until it triggers.

FIG. 1 is a schematic diagram of the forcing device; in fig. 2 shows an embodiment of the forcing device; in fig. 3 - stress plots showing work.

The boosting device contains an input bus 1, a first switch 2. a current sensor 3, a common bus 4, a differentiating element 5, a comparator 6, a control input 7, a second switch 8, a first power source 9, a load 10 (electromagnet winding), a diode 11, second power source 12. The first power source 9 is connected via a diode 11 to the first output of the load 10, the second output of which is connected to the input of the first switch 2, the control input connected to the input bus 1 and the second switch 8, the output of which is connected to the first output of the load 10. Comparator output 6 connected to the control input of the second key 8, the first input is the control input 7 of the device, and the second input is connected to the output of the differentiating element 5. its input is connected to the output of the first key 2 and the first output of current sensor 3, the second output of which dinene with a common bus 4.

The device works as follows.

If there is no input voltage on the input bus 1, the keys 2 and 8 are open, the voltage from the output of the comparator b is absent, the voltage on the cathode of the diode 11 is equal to the voltage at the output of the source 9 voltage.

The magnitude of the voltage at the output of the voltage source 12 is greater than the magnitude of the voltage at the output of the voltage source 9. The assignment of differentiating 31 elements is a driver at its output a positive polarity voltage at all points in time when the voltage at its input increases, and the value of the output voltage is proportional to the rate of increase of the voltage at its input.

After forming on the input bus

1dap key closure occurs

2 and through the load 10 (the electromagnet winding), the key 2 and the current sensor 3 begins to flow a load current 10. At the same time, the output

of the differentiating element 5, the voltage is formed in its magnitude greater than the voltage at the control input 7, and therefore at the output of the comparator 6

a voltage is generated, from which the switch 8 and the winding 10 connects the electromagnet to the high voltage source 12, through the winding 10 and the current accelerates, when the current through the winding is equal to the core voltage, the current rise steepness decreases, whereby the voltage from the output decreases

the differentiating element 5, which becomes less than the voltage value at the control input 7, so the voltage at the output of the comparator 6 disappears, the key B is disconnected and at the winding 10 abruptly the voltage value becomes equal to the voltage at the output of the voltage source 9. The current through the winding 10 is reduced to a value necessary and sufficient to hold the electromagnet in

on state.

The time to reach the switching on of the electromagnet is shown by a solid line (Fig. 3). The turn-on time of an electromagnet without forcing is shown by a dotted line.

As a rule, the turn-on time is immeasurably less than the turn-on time of the electromagnet, therefore, there is no economic resistance in the electromagnet circuit for an order of magnitude or more

reduces power losses from voltage source 12 without loss of speed and, quite the contrary, increases due to the possibility of using E2 higher. FIG. 2 shows embodiments

keys 2 and 8 and differentiating device.

Claims (1)

Invention Formula A force device containing two power sources, the first of which is connected via a diode to the first load terminal, the second output of which is connected to the input of the first key, the control input connected to the input bus, the second a key whose output is connected to the first load output, characterized in that, in order to increase the efficiency due to the forced increase of the current in the load until it is triggered, current sensor, differentiating element and comparators, the output of which is connected to the control input of the second key, the first input is the control input of the device, and the second input is connected to the output 517094136 the differentiating element, the input of which is to the first output of the current sensor, the second output of the POG is connected to the output of the first key and which is connected to the common bus. ff- FIG. 2 and control J “c. t