| 摘要 |
PURPOSE:To provide an inexpensive constant current generating circuit having simple constitution in which the required functions can be exhibited positively in safety. CONSTITUTION:The constant current generating circuit for generating a constant current constantly by preventing the fluctuation of output current due to variation of load 26 comprises means 24 for sustaining a constant potential between the output end and the load side input end of a single operational amplifier 21, and means for inputting a voltage fluctuation component caused by variation of the load 26 from a constant current output end 25 to the positive input end of the operational amplifier 21. |
