The first, "Luces in the Sky with Diamonds," presented a design for a gossamer, iso-inertial SPS using thin films of artificial diamond in thermionic conversion devices.
But for most people, the easiest way to get a hands-free phone is to add a conversion device.
Thermogenerators allow less efficient conversion (5-10%) but may be useful in situations where the end product needs to be electricity and where a small conversion device is a critical factor.
In 1973, he founded Energy Innovations in Houston to produce direct-energy conversion devices.
The normal variety of peripherals was also available, including magnetic drum units, card readers and punches, and an extensive set of analog-digital/digital-analog conversion devices.
The president's proposal contained an implicit recognition that a big part of the fuel cell question is the fuel, not the conversion device.
In an effort to reduce costs, it was decided to push this conversion closer to the customer premises by deploying small conversion devices in customer neighborhoods.
Early telecommunication devices utilized analog-to-digital conversion devices called modulator/demodulators, or modems, to convert analog data to digital data and back.
A solid oxide fuel cell (SOFC) is an electrochemical conversion device that produces electricity directly from oxidizing a fuel.
If those conditions can be met, it becomes possible to configure the transparent matrix to convey the radiation to the photovoltaic conversion devices at the output area.