The history of the diode is a fun one as it’s rife with accidental discoveries, sometimes having to wait decades for a use for what was found. Two examples of that are our first two topics: thermionic ...

What an interesting thing – a new take on thermionic valves for the audio obsessed, base on vacuum fluorescent display technology. According to RS Components, which is stocking the Korg Nutube 6P1 ...

THE specification of most modern broadcasting receivers contains an imposing list of titles describing the various thermionic valves employed in the set. The simple terms, ‘high-frequency amplifying’, ...

a, Thermionic emission current density JEmission–VCollector curves in a VCollector range of ± 40 V recorded in a typical device. The same data are plotted in a log scale in the inset. Traces and ...

THE thermionic valve is the classical example—it is even a heavily overworked example—of the everyday implement which sprang directly from the most academic physics. Its development from the useful ...

Durham start-up eVince Technology has demonstrated a 9.5kV diamond diode using solid-state field-emission, and plans develop a 15,000V diamond transistor for the power industry. First to market will ...