Self‐Heating Thermionic Vacuum Tubes

Solid-State and Vacuum Thermionic Energy Conversion

A brief overview of the research activities at the Thermionic Energy Conversion (TEC) Center is given. The goal is to achieve direct thermal to electric energy conversion with >20% efficiency and >1W/cm power density at a hot side temperature of 300-650C. Thermionic emission in both vacuum and solid-state devices is investigated. In the case of solid-state devices, hot electron filtering using ...

Types of Vacuum Tubes

Thermistors for the Gradual Application of Heater Voltage to Thermionic Tubes

Thermistors which are thermally-sensitive resistors separately. The separate application and removal of having large negative temperature coefficients of resistance can be power to the individual sectioijs facilitates trouble aptly used for the gradual application of heater voltage to thermionic tubes, thereby diminishing thermal transients and reducing mechanistin andmnizes thener of time thee...

Preanalytical management: serum vacuum tubes validation for routine clinical chemistry

INTRODUCTION The validation process is essential in accredited clinical laboratories. Aim of this study was to validate five kinds of serum vacuum tubes for routine clinical chemistry laboratory testing. MATERIALS AND METHODS Blood specimens from 100 volunteers in five different serum vacuum tubes (Tube I: VACUETTE, Tube II: LABOR IMPORT, Tube III: S-Monovette, Tube IV: SST and Tube V: SST II...

THRESHOLD LOGIC: FROM VACUUM TUBES TO NANOELECTRONICS Invited Paper

This paper reviews silicon implementations of threshold logic gates, covering several decades. It details numerous VLSI implementations including: capacitive (switched capacitor and floating gate with their variations), conductance/current (pseudo-nMOS, output-wired-inverters, and a plethora of solutions evolved from them), as well as many differential solutions. Nanoelectronic implementations ...