A variable frequency synthesizer and method of outputting the variable frequency is disclosed.
The alternating current is generated by a high-frequency generator with a variable frequency.
The variable frequency driving unit (3) comprises a back end cover (31) and a variable frequency driving controller (32).
The variable frequency motor (1) is electrically connected to a frequency converter.
The fixed frequency signal is used in composing the variable frequency signal.
The variable-frequency and variable-speed motor saves installation space.
A value register (203,303,403) maintains the recent average VFO frequency.
A filter circuitry for disturbed signals of changing frequencies.
This frequency is used as a reference to control the output of a variable oscillator.
The frequency variable circuit (4) can vary the resonance frequency of the radiating electrode (2).
The direct current variable-frequency air conditioner (6) includes an AC-DC rectifier (8) and a direct current variable-frequency air conditioner circuit (7).
A high frequency electronic ballast which comprises a variable frequency oscillator (1) having its frequency controlled by inputs (10 to 15).
A frequency variable antenna (1) has a pole-like radiating electrode (2), a matching circuit (3), a frequency variable circuit (4) and a switch circuit (5).
Upon reception of a second frequency band, the reception frequency of the second frequency band is modified by modifying at least oscillation frequency of the variable frequency oscillation circuit.
A regulated variable frequency inverter (10) provides power to an electroluminescent lamp (33).
A variable frequency synthesizer comprising a sigma-delta modulator is provided.
A variable frequency filter in which a variation in cut-off characteristics is suppressed when the frequency is varied.
The variable frequency oscillator generates time varying signals which vary in frequency proportionally to the unknown capacitance and reference capacitor selectively coupled to the oscillator timing circuit.
All of the variable frequency motors (2, 5) are connected with a frequency-converter controlling system (4).
In the past, the variable frequency drives were operable such that the voltage-to-frequency ratio remained constant regardless of operation.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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