SU383032A1 - DEVICE FOR PROTECTION - Google Patents

Description

I

There are known devices for protection of a transistor regulating element of a successive tin, containing a resistor connected in succession with it, a resistance element, feedback feedback on the load current and a signal stub restriction signal at the input of the control element.

Due to the presence of stabilization, which is used as a limiting element of the L1 known devices, the appearance of the input of the regular element is limited by the tension of the stabilizer of this stabilizer, and due to the negative reversal of the load current of the control element and the input voltage of the regulating element, the control element leads to the control element of the control element. current and load.

However, due to the relatively high intensity of the imitating Zener diode, the input at the input of the regulating element is not sufficiently limited (), especially if the source of the regulating element is sufficiently powerful. the zener diode could not be adjusted and, consequently, it was impossible to drive a max current at the load without changing the reverse coupling resistance, which in myogic cases is undesirable because it affects the The control gain element of the element.

The value of the invention is to increase the effect and understatement and to ensure the maximum efficiency. current regulation, eto. Chcheteite with the name of the electric city. The proposed device differs from 1 to those in order. that a transistor is used as a Hiero element, whose emitter is connected to the input of a regulating element, the base with the source

The pattern is determined by the magnitude of the response threshold of the pei-surge element, and the collector of the transistor is connected to the connection point of the load with the feedback resistor.

The drawing shows the septal electrical circuit and the proposed device.

It has a regulating element /, but is connected. 15 is a switch with a resistor

negative reverse communication. The uni element 1, connected in series with source 3 P1gtani, will reduce the load - /. With the input of 5 retuliruyund, UTB element / connected 6 signal source,

iravil yiy1y reguliry element 1 /.

Transistor 7 to the base of which is fed to the air source from source 8, limits the ia1: reamer at the input 5 retracts; its element /.

With an increase in na pas tion, the inlet of the regulator

of the switching element / in absolute magnitude over voltage of the source 8, the transistor 7 opens and shunts the input of its control element /, and prevents a further increase in this pattern.

In such a scheme, the control constraints at the input of the regulating element, and, consequently, the maximum load current, are easily corrected by changing the orientation at the base of the transistor.

PRIORITY OF ANNOUNCEMENT

A device for protecting a transistor regulating element of nosledovative ting containing the included nasledovatlno with

383032

four

As a regular element, the negative feedback resistor at the load current is at the center of the signal compressed at the input of the regulating element, characterized in that, for the purpose of a new 5-height gain, the jan of the control voltage is limited by the maximum current | 1, the electric signal oo, the stump of limiting the cnnal at the trough of the regulating element contains

10 - ranzistor, the emitter of which is connected to the control input of the regulating element, the base - with the source of radiation, which detects the magnitude of the response value of the protection of the regulating element, and the collector collector is connected to the junction point

15 load with feedback resistor.