DAVID L BARRETT, OD
Optometry at Montgomery, Albuquerque, NM
License number
New Mexico OP2314
Category
Optometry
Type
Optometrist
License number
New Mexico OPT7732
Category
Optometry
Type
Optometrist
Address
Address
4253 Montgomery Blvd NE SUITE 110, Albuquerque, NM 87109
Phone
(505) 881-3744
(505) 881-8931 (Fax)
(505) 881-8931 (Fax)
Personal information
See more information about DAVID L BARRETT at radaris.comName
Address
Phone
10003 Guadalupe Trl NW, Albuquerque, NM 87114
4253 Montgomery Blvd NE, Albuquerque, NM 87109
7704 Redberry St NW, Albuquerque, NM 87120
Organization information
See more information about DAVID L BARRETT at bizstanding.comDavid L Barrett Od
4253 Montgomery Blvd NE STE 110, Albuquerque, NM 87109
Industry:
Offices and Clinics of Optometrists
Doing business as:
David L Barrett
Phone:
(505) 342-0400 (Phone), (505) 881-3744 (Phone)
Description:
Offices of Optometrists
Managers:
Torres Annique (Manager),Susan Fernandez (Manager)
SIC:
8042 - Offices and Clinics of Optometrists
Categories:
Optometrists
Company size:
9
Professional information
See more information about DAVID L BARRETT at trustoria.com
David L Barrett, Albuquerque NM - OD (Doctor of Optometry)
David L Barrett, Albuquerque NM - OD (Doctor of Optometry)
Specialties:
Optometry
Address:
4253 Montgomery Blvd NE SUITE 110, Albuquerque 87109
(505) 881-3744 (Phone), (505) 881-8931 (Fax)
(505) 881-3744 (Phone), (505) 881-8931 (Fax)
Languages:
English
David Louis Barrett, Albuquerque NM
David Louis Barrett, Albuquerque NM
Specialties:
Optometrist
Address:
4253 Montgomery Blvd Ne, Albuquerque, NM 87109
Commutation Circuit For Arresting And Dissipating Energy Reflected From A Magnetic Pulse Compression Network
Commutation Circuit For Arresting And Dissipating Energy Reflected From A Magnetic Pulse Compression Network
US Patent:
6198646, Mar 6, 2001
Filed:
Dec 16, 1999
Appl. No.:
9/464444
Inventors:
David M. Barrett - Albuquerque NM
Assignee:
Quantum Manufacturing Technologies, Inc. - Albuquerque NM
International Classification:
H02M 324
US Classification:
363 96
Abstract:
An improved commutation circuit configured to arrest and dissipate energy which may be reflected from a magnetic pulse compression network. The commutation circuit includes an energy storage capacitor for storing energy, a capacitor charging unit for charging the energy storage capacitor, a power supply protection circuit configured for isolating reverse voltages from the output of the capacitor charging unit, a series switch configured for conducting current in the forward direction and blocking current in the reverse direction to and from the energy storage capacitor, a magnetic assist device configured for isolating the reverse voltage from the switch, a trigger circuit configured for transmitting a trigger pulse signal to the switch to allow the transfer of reflected energy to the energy storage capacitor and a power supply configured for biasing the magnetic assist device. The improved commutation circuit also includes a tail-biter circuit in parallel with the energy storage capacitor for capturing and dissipating the reflected energy from the capacitor, thereby protecting the commutation circuit from reflected energy from a magnetic pulse compression network which can damage the components of the commutation circuit.
Compensated Gain Control Circuit For Buck Regulator Command Charge Circuit
Compensated Gain Control Circuit For Buck Regulator Command Charge Circuit
US Patent:
5572113, Nov 5, 1996
Filed:
Aug 5, 1994
Appl. No.:
8/285532
Inventors:
David M. Barrett - Albuquerque NM
Assignee:
The United States of America as represented by the United States
Department of Energy - Washington DC
Department of Energy - Washington DC
International Classification:
G05F 144
US Classification:
323285
Abstract:
A buck regulator command charge circuit includes a compensated-gain control signal for compensating for changes in the component values in order to achieve optimal voltage regulation. The compensated-gain control circuit includes an automatic-gain control circuit for generating a variable-gain control signal. The automatic-gain control circuit is formed of a precision rectifier circuit, a filter network, an error amplifier, and an integrator circuit.
Portable Electrohydraulic Mining Drill
Portable Electrohydraulic Mining Drill
US Patent:
5896938, Apr 27, 1999
Filed:
Nov 27, 1996
Appl. No.:
8/757579
Inventors:
William M. Moeny - Albuquerque NM
David M. Barrett - Albuquerque NM
David M. Barrett - Albuquerque NM
Assignee:
Tetra Corporation - Albuquerque NM
International Classification:
E21B 700, E21B 714
US Classification:
175 1
Abstract:
An electrohydraulic drilling system for drilling holes in material such as rock utilizing a drill stem connected to a flexible cable. The electrical spark or plasma that creates the electrohydraulic pressure wave is powered by an electrical pulse propagated down the cable from a pulse generator to the drill stem. An advance mechanism on a jackleg support is utilized to move the drill into the rock during the drilling process. The drill stem and cable combination enable holes to be drilled in the roof of tunnels where the floor to roof height is less than the depth of the hole to be drilled. The electrohydraulic process provides higher drilling efficiencies than conventional systems.