SU1659925A1 - Pulse converter - Google Patents

Abstract

The invention relates to electronics, in particular to electrical measuring equipment. The purpose of the invention is to simplify the device and reduce power consumption - achieved by reducing the number of elements and reducing leakage currents. The pulse converter contains a standby multivibrator 1, a current stabilizer 2, a field-effect transistor 3, a capacitor 4, a 5-bit circuit, a repeater 6. The current stabilizer 2 consists of field-effect transistors 7-9 and a feedback resistor 10. The waiting multivibrator 1 receives measured pulses, the duration of which can vary over a wide range. The pulses formed by him with equal durations enter the current stabilizer 2, where they are stabilized in amplitude. The current pulses from the stabilizer 2 pass through the field-effect transistor 3, which uses the gate-source section of the field-effect transistor, charge the capacitor 4. Since all the pulses have the same duration and current, the voltage generated on the plates of the capacitor 4 is directly proportional to number of pulses in a pack. 1 il.

Description

The invention relates to electronics, in particular to electrical engineering.

The purpose of the invention is to simplify the device and reduce energy consumption by reducing the number of elements and reducing leakage currents.

The drawing shows a structural diagram of the Converter.

The converter consists of a standby multivibrator 1, a current stabilizer 2, a first field effect transistor 3, a capacitor 4, a discharge circuit 5, a repeater 6,

The current stabilizer 2 contains a second 7, a third 8 and a fourth 9 field effect transistors and a feedback resistor 10.

The output of the current stabilizer 2 is connected to the gate of the transistor 3, the source of which is connected to the first output of the capacitor 4. The input of the device is connected to the input of the standby multivibrator 1, the output of which is connected to the input of the current stabilizer 2, the non-inverting input of the repeater 6 is connected to the first output of the capacitor 4 and to the first 5 circuit output. The second terminal of discharge circuit 5 is connected to the second terminal of capacitor 4 and to a common bus. The inverting input of the repeater 6 is connected to the output of the repeater bis by the output of the device.

The current stabilizer 2 consists of a second 7, a third 8 and a fourth 9 field effect transistors in saturation mode. The gate of the second transistor 7 is connected to the first and the source to the second terminal of the feedback resistor 10. The source of the second field-effect transistor 7 is connected to the gate of the third 8, and the drain of the second field-effect transistor 7 is connected to the source of the third field-effect transistor 8. The source of the third field-effect transistor 8 is connected to the gate of the fourth 9 and the drain of the third 8 to the source of the fourth field-effect transistor

9. The gate of the second field-effect transistor 7 is connected to the output of the block, the drain of the fourth field-effect transistor 9 is connected to the input of the block,

The waiting multivibrator '1 is used to form pulse packets with equal durations from the measured pulses, for which the durations can vary over a wide range. The standby multivibrator 1 can be performed on transistors or microcircuits, both digital and analog, with a galvanic output.

The current stabilizer 2 in the device is made on the basis of a two-terminal device and stabilizes in amplitude the current pulses from the waiting multivibrator.

The current pulses from the stabilizer pass through the gate-source section of the field-effect transistor 3 and charge the capacitor 4. Since the current does not change during the pulse, and all pulses have the same duration, then for each pulse the capacitor 4 receives the same portions of energy, and therefore, formed on its plates voltage will be proportional to the number of pulses.

To prevent the discharge of the capacitor 4 in pauses, its charge is produced through the gate-source section of the field-effect transistor 3, which, in contrast to a semiconductor diode, has a high reverse resistance. For the same purpose, the voltage from the capacitor 4 to the output of the converter is supplied through a follower 6, at the input of which there must be a field-effect transistor.

Claims (2)

Claim 1. A pulse converter comprising a current stabilizer, a diode, a capacitor and a discharge circuit of a capacitor, wherein the output of the current stabilizer is connected to the anode of the diode, the cathode of which is connected to the first output of the capacitor, characterized in that, in order to simplify the device and reduce power consumption by reducing the number elements and reduce leakage currents, a standby multivibrator and a repeater are introduced into the converter, and the input of the device is connected to the input of the standby multivibrator, the output of which is connected to the stabilizer input current, the non-inverting input of the repeater is connected to the first output of the capacitor and to the first output of the discharge circuit, the second output of which is connected to the second output of the capacitor AND with a common bus, the inverting input of the repeater is connected to the output of the repeater and to the output of the device, and the gate source of the first field effect transistor. 2. Converter pop. 1, wherein the current stabilizer consists of a second, third and fourth field effect transistors in saturation mode, the gate of the second field effect transistor connected to the first and the source to the second output of the feedback resistor, the source of the second field effect transistor connected to the gate of the third, and the drain of the second field-effect transistor to the source of the third field-effect transistor, the source of the third field-effect transistor is connected to the gate of the fourth, and the drain of the third to the source of the fourth field-effect transistor, the gate of the second field-effect transistor nzistora connected to an output unit, a drain of the fourth FET is connected to the inverter input.