SU504292A1 - Amplifier - Google Patents

Description

I

: The invention is automatical and can be (can not be used in systems like.; Iz oyo "e G51Gsshtel, contains parallel connected transistors, the emitters of which are connected to a common bus through the I feedback bus, common collectors through a & bus source, and the source of the feedback link; base through resist nl - with an input.

However, the 8 known amplifier does not provide., Stabilization of the collector currents of the transistors. ; The purpose of this project is the expression of one hundred lysad collector currents of transistors.

This proposed device to the emitter: the first transistor is connected to non-inverting inputs -1) of operational amplifiers, the emitters of each of the remaining 1) transistors are connected to the inverting inputs of each: NC (and-1) operational amplifiers, and the output of the latter through resistors is connected to the bases corresponding -1) transistors.

The drawing shows the princent circuit of the proposed amplifier.

The amplifier contains n parallel connected traisistors (1 j - 1), the emitters of which are connected to the common 1h through the feedback resistors (2 | - 2). the collectors through the common load G - with the source of the N-band C, and the bases through the resistors (4j-4jjJ with the device input. The operating terminals of the transistor 1 j are connected to the transistor

| us9shitelvy {5j- 5.1). To emgteram transistors

(W W yucheny KHBepntpjwuwe opera inputs | Digital amplifiers (5j - 5), and the outputs of the opera

through resistors b, –6, to the bases of transistors 2– Ijj With an increase (decrease) in the codepector current of transistor 1 j, the voltage, magnitude, and phase appear at the output of the operational amplifier S J

(Which results in a decrease (increase) in the base current and, consequently, a decrease (increase) in the collector current of the second transistor 1- ,.

Dialogic alignment of the collector current of all subsequent transistors with the collector current of transistor 1 j occurs.

The stabilization of the collector currents of the transistor 112 n all subsequent occurs special about: at once. With an increase ().) The collector current of the second transistor 12 at the output of the oiiepaimjoHHOro transistor 5j appears voltage, voltage and phase to (Iori lead to a decrease in

() Shelyshao) basic tvka and, as a result, to the skill (uvednchesh11 collector current of the “Grastor 1-y Ayalspgsho” there is a stabilization of the collector of all subsequent transis1 pO9.

Invention Formula

Bc “1b, containing And in parallel connecting 1X ip“ H3HCTOpOB, the emitters of which are connected via a return link,, W and W1 to the common hinna, the collectors through a common load — to the power supply and the base through resistors — to the input, which distinguishes and and with VTO, in order to align and stabilize the collector current of the transistors, the non-inverting inputs of the transistor amplifiers are connected to the emitter of the first transistor, and the inverting {u1 inputs of each of the other transistors are connected to the emitters of each of the other (and -1) transistors. -1) operating force firs, and moves you through the last resistors - a deputy respectively: stvuvitsih (ti-1) transistors.