David Erhart Email & Phone Number

Orlando, FL, US

San Francisco, CA, US

Following the industry trends and requirements in Standards and Compliance. Maintaining a single view of what standards apply and when.

San Francisco, CA, US

Responsible for hardware and embedded software systems architecture for Stem's energy optimization products. Leading the Engineering group in hardware and embedded software systems design and development. Technology evaluations, power electronics, battery chemistry evaluations, and battery management systems and controls. Successfully fielded multiple.

San Jose, California, US

The SunSpec Alliance is a trade alliance of more than 100 solar and storage distributed energy industry participants, together pursuing information standards to enable “plug & play” system interoperability. SunSpec standards address operational aspects of solar PV power and energy storage plants on the smart grid—including residential, commercial, and.

San Jose, California, US

The inverter workgroup considers topics related to SunSpec inverter support. The main activities are concerned with proposals related to creation and support of the SunSpec inverter information models. The current major topics are: SunSpec Rule 21/UL 1741 compliance, SunSpec IEEE 2030.5 (SEP2) mapping, SunSpec four quadrant inverter support.

San Francisco, California, US

Transforming the Market in Energy Storage:Modular Energy Storage Architecture (MESA) is an open, non-proprietary set of specifications and standards developed by an industry consortium of electric utilities and technology suppliers. Through standardization, MESA accelerates interoperability, scalability, safety, quality, availability, and affordability in.

Stealth mode company based on solid-state capacitive energy storage technology.

Capacitor Sciences has developed a solid-state capacitive energy storage technology with which to create high power density and high energy density energy storage devices able to provide 10X the energy density and 100X the power density of lithium ion batteries at below $100/kWh. This energy storage technology is applicable for high power capacitor.

Overall architecture and embedded design work for an 'intelligent energy storage system'. Powergetics, Inc. was rebranded as Stem, Inc. after Series A fundraising.

Contract development & engineering services. C++ is my language of choice and I do the majority of my work on Microsoft Windows systems.I've worked on various embedded systems, VoIP voice and video systems and video conferencing systems.The last contract was with Dialogic Corporation on a Windows and Linux based VoIP gateway using Dialogic telephony.

Developed software for multiple embedded systems in automated water dispensing equipment. Implemented custom serial communication protocol to communicate with remote, wired button panels. Assisted in hardware re-design and bring-up. The embedded systems have been running 24x7 without failures for many several years.Consulted with other companies for.

Provided technical direction for the engineering team developing the CUWorld service based on the CuSeeMe service acquired from FVC. Assisted in planning of service operations, look-n-feel, co-location facilities, payment processing, development tool choices, client side application design and event management. Directly involved with the customer base and.

Held various positions at Quicknet starting as the main developer working hardware design and debug as well as device driver writer (Windows). Assisted with Quicknet's product and service developments as Director of Engineering, VP of Engineering and finally as the CTO. Responsible for the development of Quicknet's products including the Internet.

Quicknet Technologies developed a full suite of Internet Telephony (VoIP) hardware, software and service products which were sold worldwide. Quicknet's offering allowed consumers free point to point VoIP calls and low cost VoIP to PSTN calls along with calling card reseller platforms.

Windows software (CHECWORKS) development for the nuclear power plant industry under contracts mainly from EPRI. Managed other developers, build process, GUI design, tool selection/maintenance, on-site user training and network/IT management. Involved in meeting NRC and ISO 9001 requirements. Assisted in creating a spin-off company called Matrix Netware.

Implemented printer drivers for new color printers, assisted with printer controller hardware debug and MIPS R3000 boot code development. Did proof-of-concept work on 24-bit color PostScript printing to dye-sublimation printers.C programming on MS-DOS, Windows and Unix.MIPS R3000 Assembly language.Location: Santa Clara, California

Worked in the R&D group on various product ideas. Co-developed the PrintLink(tm) print server system and the PrintLink dual-parallel port ISA card for high-speed printers such as color dye-sublimation and thermal transfer printers. Moved from the R&D group to the hardware engineering group to get more hands-on experience with product development beyond the.

Contract programming during summer vacations, co-op job and senior project during college. Developed a digital image processing system for analyzing hemispherical photographs of forest light environments. Custom 'C' programs were developed to scan and analyze tens of thousands of b/w negatives of forest light taken with a fisheye lens in the jungles of.

Implemented a custom multi-user order processing, billing, invoicing, A/P, A/R system using dBase III. The system ran on an IBM PC/AT running PC/MOS with an expansion box that connected to monitors and keyboards in offices throughout the building. Performed backups, training and equipment installation and service.

Bsee, Electrical Engineering, Mathematics

Mathematics, Chemistry, Computers