| 1/00 | Stabilisation of generator output against variations of physical values, e.g. power supply (automatic control H03L 5/00, H03L 7/00) |
| 1/02 | Stabilisation of generator output against variations of physical values, e.g. power supply (automatic control H03L 5/00, H03L 7/00) against variations of temperature only |
| 1/04 | Stabilisation of generator output against variations of physical values, e.g. power supply (automatic control H03L 5/00, H03L 7/00) against variations of temperature only Constructional details for maintaining temperature constant |
| 3/00 | Starting of generators |
| 5/00 | Automatic control of voltage, current, or power |
| 5/02 | Automatic control of voltage, current, or power of power |
| 7/00 | Automatic control of frequency or phase; Synchronisation (tuning of resonant circuits in general H03J; synchronising in digital communication systems, see the relevant groups in class H04) |
| 7/02 | Automatic control of frequency or phase; Synchronisation (tuning of resonant circuits in general H03J; synchronising in digital communication systems, see the relevant groups in class H04) using a frequency discriminator comprising a passive frequency-determining element |
| 7/04 | Automatic control of frequency or phase; Synchronisation (tuning of resonant circuits in general H03J; synchronising in digital communication systems, see the relevant groups in class H04) using a frequency discriminator comprising a passive frequency-determining element wherein the frequency-determining element comprises distributed inductance and capacitance |
| 7/06 | Automatic control of frequency or phase; Synchronisation (tuning of resonant circuits in general H03J; synchronising in digital communication systems, see the relevant groups in class H04) using a reference signal applied to a frequency- or phase-locked loop |
| 7/07 | Automatic control of frequency or phase; Synchronisation (tuning of resonant circuits in general H03J; synchronising in digital communication systems, see the relevant groups in class H04) using a reference signal applied to a frequency- or phase-locked loop using several loops, e.g. for redundant clock signal generation (for indirect frequency synthesis H03L 7/22) |
| 7/08 | Automatic control of frequency or phase; Synchronisation (tuning of resonant circuits in general H03J; synchronising in digital communication systems, see the relevant groups in class H04) using a reference signal applied to a frequency- or phase-locked loop Details of the phase-locked loop |
| 7/081 | Automatic control of frequency or phase; Synchronisation (tuning of resonant circuits in general H03J; synchronising in digital communication systems, see the relevant groups in class H04) using a reference signal applied to a frequency- or phase-locked loop Details of the phase-locked loop provided with an additional controlled phase shifter |
| 7/083 | Automatic control of frequency or phase; Synchronisation (tuning of resonant circuits in general H03J; synchronising in digital communication systems, see the relevant groups in class H04) using a reference signal applied to a frequency- or phase-locked loop Details of the phase-locked loop the reference signal being additionally directly applied to the generator (direct frequency synchronisation without loop H03L 7/24) |
| 7/085 | Automatic control of frequency or phase; Synchronisation (tuning of resonant circuits in general H03J; synchronising in digital communication systems, see the relevant groups in class H04) using a reference signal applied to a frequency- or phase-locked loop Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal (H03L 7/1 takes precedence; frequency or phase detection comparison in general H03D 3/00, H03D 13/00) |
| 7/087 | Automatic control of frequency or phase; Synchronisation (tuning of resonant circuits in general H03J; synchronising in digital communication systems, see the relevant groups in class H04) using a reference signal applied to a frequency- or phase-locked loop Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal (H03L 7/1 takes precedence; frequency or phase detection comparison in general H03D 3/00, H03D 13/00) using at least two phase detectors or a frequency and phase detector in the loop |
| 7/089 | Automatic control of frequency or phase; Synchronisation (tuning of resonant circuits in general H03J; synchronising in digital communication systems, see the relevant groups in class H04) using a reference signal applied to a frequency- or phase-locked loop Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal (H03L 7/1 takes precedence; frequency or phase detection comparison in general H03D 3/00, H03D 13/00) the phase or frequency detector generating up-down pulses (H03L 7/087 takes precedence) |
| 7/091 | Automatic control of frequency or phase; Synchronisation (tuning of resonant circuits in general H03J; synchronising in digital communication systems, see the relevant groups in class H04) using a reference signal applied to a frequency- or phase-locked loop Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal (H03L 7/1 takes precedence; frequency or phase detection comparison in general H03D 3/00, H03D 13/00) the phase or frequency detector using a sampling device (H03L 7/087 takes precedence) |
| 7/093 | Automatic control of frequency or phase; Synchronisation (tuning of resonant circuits in general H03J; synchronising in digital communication systems, see the relevant groups in class H04) using a reference signal applied to a frequency- or phase-locked loop Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal (H03L 7/1 takes precedence; frequency or phase detection comparison in general H03D 3/00, H03D 13/00) using special filtering or amplification characteristics in the loop (H03L 7/087-H03L 7/091 take precedence) |
| 7/095 | Automatic control of frequency or phase; Synchronisation (tuning of resonant circuits in general H03J; synchronising in digital communication systems, see the relevant groups in class H04) using a reference signal applied to a frequency- or phase-locked loop Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal (H03L 7/1 takes precedence; frequency or phase detection comparison in general H03D 3/00, H03D 13/00) using a lock detector (H03L 7/087 takes precedence) |