Lazar Rozenblat

Professional background

Over 35 years of experience in the power electronics design from concepts to production at leading power supply companies.

My last employer was Microchip where I was Principal Applications Engineer supporting PoE PD product line. The longest part of my career has been associated with Transistor Devices (TDI). I've been a Principal Engineer at TDI Long Island R&D Center from 2001 to 2014 until it was acquired by Astrodyne. Upon the acquisition Astrodyne has closed the Long Island R&D Center. My developments at TDI included a series of power supplies with 360-800 Hz PFC for various commercial aircraft systems. This included in-seat inverter, high-efficiency high-density 1000W and 500W telecom PSU with 1U height, a programmable multiple output SMPS with magamp post-regulators for medical applications, a DC-DC military-grade converter for VME, a DC-DC converter card with multi-phase synchronous rectifiers, and others.

Prior to joining TDI, I worked for Todd Products in Brentwood, NY. I have been with Todd for 11 years as a Senior Power Supply Design Engineer and then as a Manager of R&D Group. My main responsibility at Todd was advanced product development. I designed a number of their SMPS product lines as well as custom models. Here is a photo of the Todd staff when I joined it in 1990 (click on the picture for a larger image):



Todd was a great company to work for while it was run by Paul Todd, its founder and owner. After his sudden death, the company was managed by opportunists who did not know what they are doing and who quickly brought it to the verge of bankruptcy. Todd Products assets were then bought by Condor D.C. Power Supplies for a small fraction of what the company was worth before. Condor was a part of SL Industries, which was owned by a group of investors who did not know much of power electronics or engineering either. They grew primarily by acquisitions rather than by technical innovations. So, very soon, SL fired almost entire remaining staff of former Todd Products. I continued working at the Todd facility in Brentwood NY until it was finally closed up in 2001, being among the last five of the original Todd's employees. Below is a photo of Todd's staff during its last week in 2001. (click on the picture for a larger image):

Education:

The Degree of Engineer (equivalent to MSEE) from Leningrad Electrical Engineering Institute for Communications (LEIS).

Switching Power Supply Design: A Concise Practical Handbook

Home Generator: Selecting, Sizing And Connecting

Standby Powering Over Ethernet - U.S Patent 9,923,727B2

Load Distribution And Power Management System And Method - U.S.Patent Application 13/788,431

Power over Ethernet (PoE), Powered Devices (PD) and DC-DC Design Considerations - online video course

Powering In-Flight Entertainment Equipment for Commercial Aircraft

Powering CompactPCI systems

Specifying power supplies for embedded systems

When it comes to CompactPCI supplies standards are helping

Understanding transient response of a Switch Mode Supply

Powering carrier grade systems

Invention: High voltage supply

Invention: Method of neutralizing static electricity

NOTE: I maintain this and other websites on my own personal initiative. They are not endorsed by my employers. Likewise, the opinions expressed here are my own and do not represent positions, strategies, or opinions of my past and current employers.