Title:
VARIABLE FREQUENCY OSCILLATOR OF VOLTAGE CONTROL TYPE FOR ELECTRONIC M USICAL INSTRUMENT
Document Type and Number:
Japanese Patent JPS5245917
Kind Code:
A
Abstract:
PURPOSE: To provide a variable frequency oscillator, in which the charging and discharging operation of a capacitor by such as electric current as is proportional to the inverse logarithm of an input voltage level and as is produced by a logarithmic circuit are controlled by the output of aSchmidt circuit and a sitching elenment so that an octave frequency may be produced by the use of asimple circuit.
Inventors:
UCHIYAMA SHIGERU
Application Number:
JP12125775A
Publication Date:
April 12, 1977
Filing Date:
October 09, 1975
Export Citation:
Assignee:
KAWAI MUSICAL INSTR MFG CO
International Classes:
G10H5/00; (IPC1-7): G10H5/00
Domestic Patent References:
| JP37005771A | ||||
| JPS4944783A | 1974-04-27 | |||
| JPS4930090A | 1974-03-18 |