PL207691A1 - Sposob i uklad sterowania polprzewodnikowego nadajnika ultradzwiekowego z modulacja czestotliwosci,zwlaszcza do lacznosci podwodnej - Google Patents
Sposob i uklad sterowania polprzewodnikowego nadajnika ultradzwiekowego z modulacja czestotliwosci,zwlaszcza do lacznosci podwodnejInfo
- Publication number
- PL207691A1 PL207691A1 PL20769178A PL20769178A PL207691A1 PL 207691 A1 PL207691 A1 PL 207691A1 PL 20769178 A PL20769178 A PL 20769178A PL 20769178 A PL20769178 A PL 20769178A PL 207691 A1 PL207691 A1 PL 207691A1
- Authority
- PL
- Poland
- Prior art keywords
- ultraside
- underwater
- transmitter
- controlling
- circuit
- Prior art date
Links
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL20769178A PL113885B2 (en) | 1978-06-15 | 1978-06-15 | Control system for a frequency-modulated semiconductor-type ultrasonic transmitter especially for underwater communictation purposes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL20769178A PL113885B2 (en) | 1978-06-15 | 1978-06-15 | Control system for a frequency-modulated semiconductor-type ultrasonic transmitter especially for underwater communictation purposes |
Publications (2)
Publication Number | Publication Date |
---|---|
PL207691A1 true PL207691A1 (pl) | 1979-05-07 |
PL113885B2 PL113885B2 (en) | 1981-01-31 |
Family
ID=19989980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PL20769178A PL113885B2 (en) | 1978-06-15 | 1978-06-15 | Control system for a frequency-modulated semiconductor-type ultrasonic transmitter especially for underwater communictation purposes |
Country Status (1)
Country | Link |
---|---|
PL (1) | PL113885B2 (pl) |
-
1978
- 1978-06-15 PL PL20769178A patent/PL113885B2/pl not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
PL113885B2 (en) | 1981-01-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5285273A (en) | Desulfurising method of rubber by microwave | |
JPS54125437A (en) | High frequency stabilizing transformer | |
IT1170123B (it) | Trasmettitore adatto per la trasmissione di segnali modulati in frequenza | |
GB2031676B (en) | Frequency modulation systems | |
AR242464A1 (es) | Un accionador electromagnetico. | |
AU543098B2 (en) | Frequency modulation | |
FI811048L (fi) | Malningsfoerfarande och -anordning under anvaendning av slipskivor i en skivrenare | |
DE3585819D1 (de) | Verstaerker mit verbessertem frequenzgang. | |
JPS5394758A (en) | Delta modulating method | |
AU512512B2 (en) | Frequency converter | |
GB2037513B (en) | Frequency control arrangements | |
AU540791B2 (en) | Oscillator frequency control | |
AU514769B2 (en) | Microwave amplifier | |
PL207691A1 (pl) | Sposob i uklad sterowania polprzewodnikowego nadajnika ultradzwiekowego z modulacja czestotliwosci,zwlaszcza do lacznosci podwodnej | |
LU78370A1 (de) | Pulsmodulierter hochfrequenzsender | |
AT383445B (de) | Quadraturstufenfrequenzumformer | |
ATE39203T1 (de) | Einrichtung zum begrenzen der sendeleistung von radiowellensendern. | |
JPS52117009A (en) | Amplitude modulation transmitter | |
JPS54142051A (en) | Low frequency amplifier | |
BR8207675A (pt) | Conjunto de circuitos controladores da modulacao do transmissor de radio | |
JPS54114068A (en) | Low frequency amplifier | |
PT66176A (en) | Method of oxidizing metal-ions | |
PL101658B1 (pl) | Method of obtaining sexivalent discrete frequency modulation for the transmission of telegraphic signals | |
JPS54114069A (en) | Low frequency amplifier | |
JPS5592004A (en) | High frequency transmitter for particularly radiozinde |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Decisions on the lapse of the protection rights |
Effective date: 20071231 |