Document Type and Number:
Japanese Patent JPS5089073
Kind Code:
A
Abstract:
A method and an apparatus are described for indicating and/or recording electrical quantities, the desired and actual values being converted into pulses whose repetition frequencies are proportional to the actual and desired quantities. The difference between the two pulse frequencies controls a stepping motor, whose shaft drives the indicating or recording element.
Application Number:
JP7389074A
Publication Date:
July 17, 1975
Filing Date:
June 29, 1974
Export Citation:
International Classes:
G01D3/06; G01R17/06; H03K5/00; (IPC1-7): G01R17/06
Domestic Patent References:
| JPS514218A | 1976-01-14 |