Communications – electrical: acoustic wave systems and devices – Transmitter systems
Patent
1990-10-31
1991-12-17
Pihulic, Daniel T.
Communications, electrical: acoustic wave systems and devices
Transmitter systems
367903, H04B 102
Patent
active
050738780
ABSTRACT:
A driver circuit for an acoustic transducer includes a voltage regulator that provides a regulated DC output level for a high value load impedance and when the load impedance falls to a low value, its DC output exhibits a substantially reduced level. A transformer is connected between the voltage regulator and the acoustic transducer. A switching circuit is connected to the transformer and is responsive to a leading edge of a pulse input signal to reflect a low value impedance through the transformer to the voltage regulator. The switching circuit is further responsive to a lagging edge of a pulse input signal to reflect a high value impedance to the voltage regulator. A capacitive reactance circuit is coupled to the transformer and is responsive to the switching circuit reflecting a low value impedance to manifest a reduced charge state. When the switching circuit receives the lagging edge of the pulse input signal, the capacitive reactance circuit is recharged to the regulated DC output level, but over a charge time which prevents a step function signal from appearing across the transformer.
REFERENCES:
patent: 4706227 (1987-11-01), DuVall et al.
patent: 4953141 (1990-08-01), Novak et al.
Cyber Scientific
Pihulic Daniel T.
LandOfFree
Circuit for driving an acoustic transducer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Circuit for driving an acoustic transducer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit for driving an acoustic transducer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-838828