US3110853A
(en )
1963-11-12
Electrical control apparatus
JPH0656942B2
(ja )
1994-07-27
デジタル信号用遅延回路
US3390341A
(en )
1968-06-25
Voltage sensitive integration circuit
US3655954A
(en )
1972-04-11
Closed loop control system with automatic variation of its regulating feedback amplification
US3541319A
(en )
1970-11-17
Apparatus having infinite memory for synchronizing an input signal to the output of an analog integrator
US2860241A
(en )
1958-11-11
Ratio computer
SU409238A1
(enrdf_load_stackoverflow )
1973-11-30
US3113274A
(en )
1963-12-03
Analog squaring device
US3549903A
(en )
1970-12-22
Variable resistance and low pass filter circuit
US2795654A
(en )
1957-06-11
High impedance electronic circuit
US3300631A
(en )
1967-01-24
Analog multiplier
US4211971A
(en )
1980-07-08
Ratio meter for capacitive-type displacement converter
US3564428A
(en )
1971-02-16
Reset time compensator for frequency converter
US3309510A
(en )
1967-03-14
Analog multiplier
CA1056062A
(en )
1979-06-05
Analog mathematical root extractor
US3294961A
(en )
1966-12-27
Phase and d.-c. voltage analog computing system
US3544812A
(en )
1970-12-01
Analog multiplier
GB1269046A
(en )
1972-03-29
Improvements relating to multiplying circuit arrangements
US2792988A
(en )
1957-05-21
Electronic integrator
US4042815A
(en )
1977-08-16
Electronic multipliers
US3475601A
(en )
1969-10-28
Controlled impedance analog multiplier circuit in which a differential amplifier output drives a field effect transistor
US4473802A
(en )
1984-09-25
Electrical signal converter with step variable gain
GB1062966A
(en )
1967-03-22
Signal analyzer systems
GB1176832A
(en )
1970-01-07
An Electronic PI Controller.
US3424987A
(en )
1969-01-28
Controlled analog differentialtaking circuit