WEI X CHEN
Sheet Metal in Malden, MA
License number
Massachusetts 15098
Issued Date
Apr 8, 2014
Expiration Date
Jun 28, 2017
Type
Sheet Metal Apprentice
Address
Address
Malden, MA 02148
Personal information
See more information about WEI X CHEN at radaris.comName
Address
Phone
42 Cunard St APT 3, Roxbury Crossing, MA 02120
44 Palmer St, South Dartmouth, MA 02748
350 Memorial Dr, Cambridge, MA 02139
42 Carleton St, Cambridge, MA 02142
117 Harvard St #8, Cambridge, MA 02139
Professional information
See more information about WEI X CHEN at trustoria.com
Power-Down Circuit
Power-Down Circuit
US Patent:
5841269, Nov 24, 1998
Filed:
Aug 1, 1997
Appl. No.:
8/905480
Inventors:
Richard P. Schoonmaker - Wilton CT
Wei C. Chen - Malden MA
Edward J. Naclerio - Madison CT
Wei C. Chen - Malden MA
Edward J. Naclerio - Madison CT
Assignee:
Pitney Bowes Inc. - Stamford CT
International Classification:
G05F 1569, H02H 318
US Classification:
323276
Abstract:
A power-down circuit includes a power-on reset circuit that determines whether the supplied power falls below a prescribed level and, in response, outputs a reset signal for at least a prescribed period of time. A power supply latching circuit is responsive to the power-on reset circuit for switching on a power supply switching circuit to supply power from a power supply when the reset signal is not output. A power-down shutdown circuit, preferably under software control, and a power cutoff circuit, may be coupled to the power supply latching circuit, or alternatively the power-on reset circuit, for shutting down the power supplied from the power supply.