SU495699A1

SU495699A1 - Vibrato Two Phase Generator

Info

Publication number: SU495699A1
Application number: SU2043684A
Authority: SU
Inventors: Валентинас Повило Митрикас; Ричардс Пранович Номицас
Original assignee: Предприятие П/Я Г-4322
Priority date: 1974-07-11
Filing date: 1974-07-11
Publication date: 1975-12-15

Description

пр жени генератора. Когда требуетс выходной снгнал с меньши 1и искажени ми, предночтнтельно исиользовать стабилитрон с симметричным нанр жением стабилизации, а при малых амплитудах выходного сигнала он может быть заменен на параллельно-встречно включенные кремниевые диоды.yarn generator. When an output voltage with less than 1i and distortions is required, it is necessary to use a Zener diode with a symmetric stabilization effect in advance, and at small output signal amplitudes it can be replaced with parallel-connected silicon diodes.

Сигнал с коллектора транзистора 3 повтор етс эмиттерпым повторителем 22, сохран его амплитуду и фазу.The signal from the collector of transistor 3 is repeated by the emitter follower 22, maintaining its amplitude and phase.

Выходы 41 и 42 с разной фазой выходного напр жени в основном предназначены дл питани регул торов уровн гармоник устройства (на чертеже не показано) гармонического синтеза звукового сигнала ЭМИ и при выведенном сигнале «вибрато генератора должны иметь максимальиый уровень посто нного напр жени . Дл этого резисторы 28, 29 подключены: первый одним выводом к эмиттеру транзистора 22, другим выводом через диод 30, включенный в пр мом направленни, к шине питающего напр жени , аналогично второй резистор 29 одним выводом подключен к коллектору транзистора 32 и другим выводом через диод 31, включенный в пр мом направлении , к шине питающего напр жени .The outputs 41 and 42 with different phases of the output voltage are mainly intended to power the device harmonic level controllers (not shown) of the harmonic synthesis of the EMP sound signal and, when the generator vibrato signal is output, must have the maximum level of constant voltage. For this, the resistors 28, 29 are connected: the first one is connected to the emitter of the transistor 22, the other through a diode 30 connected in the forward direction to the supply voltage bus, similarly to the second resistor 29 by one output connected to the collector of the transistor 32 and the other through a diode 31, connected in the forward direction, to the supply busbar.

Фазовращатель, собранный на транзисторе 32, получает через резистор 37 и конденсатор 38 ослабленный сигнал с транзистора 22, усиливает его, поворачивает фазу и подает на резистор 29.The phase shifter, assembled on the transistor 32, receives through the resistor 37 and the capacitor 38 a weakened signal from the transistor 22, amplifies it, turns the phase and supplies it to the resistor 29.

Сигналы с движков резисторов 28, 29 ноступают на базу транзисторов 24, 25 выходныхThe signals from the engines of the resistors 28, 29 are received at the base of transistors 24, 25 output

повторителей, повтор ютс и смещенные на уровень напр жени стабилизации стабилитронов 39, 40 подаютс на выходные клеммы.The repeaters are repeated and the stabilization voltage of the zener diodes 39, 40 shifted by the level is applied to the output terminals.

Claims

Invention Formula

A two-phase vibrato generator for electronic musical instruments, comprising a master oscillator consisting of a two-stage transistor amplifier with direct connection between transistors, a divided resistor load in the collector circuit of the second transistor, and a positive feedback circuit tunable by the C-C driver frequency; emitter

a repeater on a reverse conduction type transistor connected to the output of the master oscillator; and two output emitter repeaters, one of which is connected to the emitter follower on

transistor of the inverse type of conduction is inadequate, and, secondly, through a transistor phase shifter, in order to increase the stability of the output signal amplitude between the connection point of the resistors of the divided resistor load in the collector circuit the second transistor and the collector of the first transistor of the two-stage amplifier included a circuit of a series of included capacitors and

the zener, and the base of the first transistor of the two-stage amplifier is connected to the emitter of the second transistor of the two-stage amplifier via a T-shaped / C-peep.