Communications: electrical – Audible indication – Piezoelectric
Patent
1995-05-01
1998-08-11
Hofsass, Jeffery A.
Communications: electrical
Audible indication
Piezoelectric
3403845, 3403847, G08B 310
Patent
active
057932824
ABSTRACT:
An electronic chime is created by a piezoelectric transducer with an exponentially decaying audio signal. The electronic chime has a power supply, an oscillator, a drive circuit, and a piezoelectric transducer. The drive circuit contains reactive components that function with the piezoelectric transducer to modulate the amplitude of the decaying audio signal. The amplitude modulated audio signal better simulates a mechanical chime.
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Americans With Disabilities Act (ADA), Accessibility Guidelines For Buildings and Facilities, 4.10.13 Car Position Indicators, 56 Federal Register 144 (Jul. 26, 1991).
Arnold Todd Lynn
Burnett George Alan
Hofsass Jeffery A.
Mannava Ashok
Yosemite Investment, Inc.
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