Self-protected, low emission electronic device for driving a war

Details Self-protected, low emission electronic device for driving a war Self-protected, low emission electronic device for driving a war

1998-02-24

2000-06-27

Wu, Daniel J.

Communications: electrical

Audible indication

Electronic

3403881, 3403887, 3403933, G08B 310

Patent

active

060811846

ABSTRACT:
A self-protected, low emission electronic device for driving a warning horn includes a coil powered from a battery through a control push-button adapted for operation by a user and included in an electric connection between a terminal of the coil and the battery. The device includes a protective circuit portion connected between the battery and the warning horn. The protective circuit portion includes a bridge structure of power components. At least a pair of the power components are MOS power transistors of which one is driven by a charge pump.

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patent: 5457437 (1995-10-01), Kim
Graf, et al, Encyclopedia of Electronic Circuits. vol. 4, p. 427, 1992.

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