SU1534754A1 - Stabilized voltage former on mis transistors - Google Patents

Abstract

The invention relates to the field of electronics and can be used to create integrated circuits on MOS transistors. The purpose of the invention — improving the stability of the output voltage — is achieved by introducing a load transistor. The driver contains output transistors 1, 2, 3, a load transistor 4, a voltage divider 5, a control signal bus 6, an output bus 7, a power bus 8 and a common bus 9. An increase in the load current leads to an increase in the voltage drop on transistor 1, which is compensated by feedback using transistors 2, 3, 4. The voltage stability of the driver is determined by the gain of the voltage of the amplifier circuit at transistors 3 and 4. 1 hp f-ly, 1 ill.

Description

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The invention relates to electronic engineering and can be used to create integrated circuits on MOS transistors.

The purpose of the invention is to increase the stability of the output voltage when measuring the load current.

The drawing shows an electric circuit of a stabilizer stabilized voltage.

The former contains the first 1, fluorine 2, and the third 3 output transistors, the load transistor 4, the voltage delifel 5, the control signal bus 6, the output bus 7, the output bus 8, and the common bus 9. Source source transistor 1 is connected by a common bus 9, its drain is combined with the source of the second output transistor 2 and connected to the output bus 7,: the current of the second output transistor 2 is connected to the source of the third output-to transistor 3, and its gate is controlled by the width of the transistor 2 signal 6. The drain of the load transistor 4 is connected to the power supply bus 8, e a source with hundred- Јsom third 3 and to the gate of the first 1 | of the output transistors. The voltage divider 5 is made on two successively connected transistors 10 and 11, which are connected between the power bus 8 and the common bus 9. The output 12 of the voltage divider is connected to the gate of the third transistor 3.

The shaper works as follows.

When a control signal is applied to the bus 6 of the voltage Log. O, the transistor 2 closes. The current flowing through the transistors 1-4 is broken. At the source of the transistor 4, the voltage is close to the voltage of the power source. This voltage is applied to the gate of the transistor 1, the latter has a low resistance, and the drain on it, and the output bus 7, close to the potential of a shared tire.

If the voltage 6 is connected to the bus 6, the transistor 2 opens. A current flows through the circuit of transistors 1-4, creating a voltage drop across these transistors depending on the magnitude of their resistances. The output voltage of the driver is equal to the voltage drop across the transistor 1, His

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the value is set by voltage divider 5. The value of the output voltage of the driver is different from the voltage at the output 12 of the divider only by the magnitude of the opening voltage of the transistor 3 and by the value of the voltage drop across the transistor 2, which is close to zero.

Let the load change in such a way that there is an increase in the inflowing output current. In this case, the voltage drop across transistor 1 increases. This voltage increase through the open transistor 2 is transmitted to the voltage of transistor 3, reducing the gate-source voltage of this transistor, which is the input voltage of the amplifier stage formed by transistors 3 and 4, The gains in the voltage of such a cascade are large because it determines the stability of the output voltage of the driver.

The amplified voltage from the output of the amplifier stage enters the gate of transistor 1, reducing the resistance of the latter. The voltage drop across transistor 1 is reduced to almost the initial state. Similarly, stabilization occurs as the load current decreases.

Claims (2)

Invention Formula A stabilized voltage driver on MOS transistors containing three output transistors, the source of the first of which is connected to the common bus, the drain to the source of the second output transistor and the output terminal of the imager, the drain of the second output transistor is connected to the source of the third, and the gate to the control bus A signal, characterized in that, in order to increase the stability of the output voltage when the load current changes, a voltage divider and a load transistor are introduced into it, the drain of which is connected to the power bus, the source with the drain of the third and the gate of the first output transistors; the voltage divider is connected between the common bus and the power bus; the output of the voltage divider is connected to the gate of the third output transistor. 515347546 2. Shaper according to claim 1, about t l and -. yen with the source of the second transistor, which is based on the fact that the dividerstock and the gate of which are connected to the voltage contains two transistors, a power supply bus, the source of the second transistor source of the first transistor of the connecting device is the output of a divider, eg a common bus, a drain and a gate of the connection.