Title:
OSCILLATION CIRCUIT
Document Type and Number:
Japanese Patent JPH02226223
Kind Code:
A
Abstract:
PURPOSE:To stabilize the automatic excitation of a vibrator by connecting a fixed load resistance element and a variable resistance load element in series with an automatic excitation driving part and lowering the pure resistance value of the impedance of the driving part with the composite resistance of both the elements. CONSTITUTION:One end of the fixed load resistance element B connected to the scanner coil A of impedance Z of the automatic excitation driving part which has an operational amplifier Q1, etc., is grounded. This driving part is provided with the fixed load resistance element r1 and variable load resistance element r2 which are connected in series and the resistance value of the pure resistance of the impedance of the driving part is lowered with the composite resistance of those elements r1 and r2 to stabilize the automatic excitation of the vibrator which vibrates a galvanometer for optical scanning by the simple constitution.
Inventors:
UEDA TOSHITSUGU
YAMAZAKI DAISUKE
SUGIYAMA NAOKI
YAMAZAKI DAISUKE
SUGIYAMA NAOKI
Application Number:
JP4776289A
Publication Date:
September 07, 1990
Filing Date:
February 28, 1989
Export Citation:
Assignee:
YOKOGAWA ELECTRIC CORP
International Classes:
G02B26/10; (IPC1-7): G02B26/10
Attorney, Agent or Firm:
Shinsuke Ozawa