| 摘要 |
<p>The invention concerns a device comprising a periodic signal generator (1) supplied with a controlled current (Iass). The signal (Vgen) of the periodic generator signal (1) is amplified by an amplifier (2) which produces a signal (Vout) with amplitude controlled by the detectors (31 and 32). The low-level detector (31) controls, via a low-pass filter (41), a transistor (T1) which supplies a first controlled current (Iass1) to the generator (1). The high-level detector (32) controls, via a low-pass filter (42), a transistor (T2) which supplies a second controlled current (Iass2) to the generator. Thus the device enables to supply the generator with the minimal current (Iass) which ensures sufficient amplitude for the signal (Vout) to control digital circuits.</p> |
