SU531245A1 - Device for automatic frequency control - Google Patents
Device for automatic frequency controlInfo
- Publication number
- SU531245A1 SU531245A1 SU2127524A SU2127524A SU531245A1 SU 531245 A1 SU531245 A1 SU 531245A1 SU 2127524 A SU2127524 A SU 2127524A SU 2127524 A SU2127524 A SU 2127524A SU 531245 A1 SU531245 A1 SU 531245A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- pulses
- frequency control
- automatic frequency
- divider
- reset
- Prior art date
Links
Landscapes
- Measuring Frequencies, Analyzing Spectra (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Description
Из напр жени сети датчик 4 формирует опорные импульсы, направл ющиес на формирователь 5. Отсюда импульсы сброса поступают на сброс делител 2, которьй делит частоту, используемую в устройстве. Импульсы переполнени делител 2 поступают на один из входов блока формировани сигнала рассогласовани 3 и на формирователь 6, формирующий импульсы запрета определенной длительности. На второй вход блока 3 поступают опорные импульсы с датчика 4. Сигнал рассогласовани на выходе блока 3, пропорциональньш разнице частот опорных импульсов и импульсов переполнени делител 2, подаетс на генератор 1 дл управлени его частотой.From the mains voltage, sensor 4 generates reference pulses that are sent to the driver 5. From here, the reset pulses arrive at the reset of the divider 2, which divides the frequency used in the device. The overflow pulses of the divider 2 are fed to one of the inputs of the block of the formation of the error signal 3 and to the driver 6, which generates prohibition pulses of a certain duration. The second input of block 3 receives reference pulses from sensor 4. The error signal at the output of block 3, proportional to the difference between the frequencies of the reference pulses and the overflow pulses of divider 2, is fed to generator 1 to control its frequency.
Пока сигнал рассогласовани на выходе блока 3 длиннее импульсов запрета на выходе формировател 6, сброс делител 2 не запрещаетс и на него поступают импульсы сброса. Но как только сигнал рассогласовани становитс короче импульсов запрета, опорные импульсы с датчика 4 запрещаютс импульсами запрета с формировател 6, и импульсы сброса с формировател 5 на делитель 2 не поступают. При этом сигнал ошибки в делителе 2 интегрируетс , благодар чему сигнал опшбки резко ослабевает.As long as the error signal at the output of the block 3 is longer than the inhibit pulses at the output of the imaging unit 6, the reset of the divider 2 is not prohibited and it receives the reset pulses. But as soon as the error signal becomes shorter than the inhibit pulses, the reference pulses from the sensor 4 are inhibited by the inhibit pulses from the driver 6, and the reset pulses from the driver 5 are not transmitted to divider 2. At the same time, the error signal in divider 2 is integrated, whereby the signal of the error is sharply weakened.
Это устройство, как и известное устройствоThis device, like the known device
2, имеет ишрокую полосу захвата и синхронизма.2, has iskrokuyu band capture and synchronism.
Устройство дл АПЧ может использоватьс в An AFC device can be used in
цифровых вольтметрах, в частотомерах дл измерени низких частот, а также в синтезаторах частоты , дава возможность измен ть частоту управл емого генератора в широких пределах и с небольшим шагом, и во многих устройствах радиосв зи. Во всех случа х устройство дп АПЧ дает высокую точность измерени .digital voltmeters, frequency meters for measuring low frequencies, as well as frequency synthesizers, making it possible to vary the frequency of the controlled oscillator over a wide range and in small steps, and in many radio communication devices. In all cases, the device dp AFC provides high measurement accuracy.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2127524A SU531245A1 (en) | 1975-04-14 | 1975-04-14 | Device for automatic frequency control |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2127524A SU531245A1 (en) | 1975-04-14 | 1975-04-14 | Device for automatic frequency control |
Publications (1)
Publication Number | Publication Date |
---|---|
SU531245A1 true SU531245A1 (en) | 1976-10-05 |
Family
ID=20617320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU2127524A SU531245A1 (en) | 1975-04-14 | 1975-04-14 | Device for automatic frequency control |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU531245A1 (en) |
-
1975
- 1975-04-14 SU SU2127524A patent/SU531245A1/en active
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