US2550518A
(en )
1951-04-24
Control of impedance of semiconductor amplifier circuits
EP0181146A2
(en )
1986-05-14
Transimpedance amplifier circuit
ES362257A1
(es )
1970-12-01
Ecualizador automatico para sistemas de transmision digi- tal.
US4119922A
(en )
1978-10-10
Circuit for automatic volume compression or volume expansion
GB944682A
(en )
1963-12-18
Improvements in or relating to multi-stage variable-gain transistor amplifiers
US5115213A
(en )
1992-05-19
Frequency equalizer
SE7601276L
(sv )
1976-09-13
Regleranordning
FI79004C
(fi )
1989-10-10
Foerstaerkare som innehaoller foerstaerknings distributionsreglering foer kaskadkopplade foerstaerkningssteg.
SU379045A1
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html )
1973-04-18
TW364239B
(en )
1999-07-11
Light transmitting device
US4185248A
(en )
1980-01-22
Input level supervisory system for level regulator
EP0322803B1
(en )
1995-03-29
Automatic gain control amplifier for compensating cable loss
US4455535A
(en )
1984-06-19
Frequency characteristic adjusting apparatus
US3243719A
(en )
1966-03-29
A. g. c. circuit including a constant impedance variable-attenuation network utilizing current-sensitive impedances
GB1192690A
(en )
1970-05-20
Improvements in or relating to Wideband Transistor Amplifiers with Gain Control
NL7907277A
(nl )
1980-04-09
Werkwijze en keten voor het besturen van een niet- lineaire drempelketen.
GB989423A
(en )
1965-04-14
Improvements in or relating to electrical attenuators
US3423535A
(en )
1969-01-21
Carrier system slope regulator
US4241320A
(en )
1980-12-23
Circuit arrangement for establishing weighting coefficients in an analog-type adaptive equalizer
US3024408A
(en )
1962-03-06
Automatic gain control circuit
SU924871A2
(ru )
1982-04-30
Устройство дл автоматической коррекции амплитудно-частотных искажений в системах передачи
US1956715A
(en )
1934-05-01
Correction for changes in line transmission
US3387232A
(en )
1968-06-04
Pilot-controlled regulating apparatus for transmission systems
US2132101A
(en )
1938-10-04
Carrier wave system compensated automatic gain control
JPS6019310A
(ja )
1985-01-31
高周波電力制御回路