Electric engineering
Power engineering
The largest part of the collection is represented by rotating electric direct- and alternating-current machines. It contains experimental models of early machines for transforming mechanical energy into electric power and vice versa. The machines of domestic provenance are represented, in particular, by the designs of Frantisek Krizik and Emil Kolben (EAS, later CKD), the collection comprises also other producers (Bartelmus-Donat, Sousedik, Skoda and others). The collection contains also traction motors for the electric line (Krizik) and electromobiles (Kolben, Sousedik). Foreign products are more frequently represented by machines from Germany and Austria. The collection also contains two high- frequency alternators of French provenance (SFR) that were used in transmitters. The fund also includes controllers and motor starters.
Moreover, the collection contains the device serving for distribution of electric energy (isolators, switches, circuit breakers, insulators, complete switchboards, contactors, fuses, small fittings, etc.).
The collection of chemical and thermoelectric sources of electric power includes principal elements of most galvanic cells used in our country and several batteries of thermoelectric cells heated by gas or liquid fuel burners. The collection of electrostatic devices consist mostly of electrostatic sources, demonstration aids and, last but not least, a group of lightning rods.
Measuring methods
The collection contains a very
large group of electric measuring instruments of all kinds and versions of
domestic (Roucka, Sochor, Metra, Krizik) as well as foreign provenance from
virtually all over the world beginning with the oldest systems to modern
products. An independent collection contains electric meters of all types of
domestic, Austrian and German production.
The group of electronic measuring instruments includes predominantly domestic products (Tesla, Metra, Krizik) from the period after the World War II.
Electric illumination
A large collection of electric illumination means contains arc lamps of various systems (including the designs of Krizik from the 70s and 80s of 19th century), in addition semi-filament, filament and fluorescent lamps, as well as complete illuminating bodies. The time span of the collection is roughly limited by the 30s of this century, more modern objects can be found here only rarely.
Telecommunications
The collection
of telegraphy contains the most important telegraph devices used on our
territory, teleprinters as well as other telegraph accessories.
The collection of telephony contains both telephone sets of all systems used on our territory since its introduction and manual telecommunication means as well as parts or components of automatic switching centres. The transmission technique is represented by amplifiers and components and specimens of phone external and cable lines.
The collection of radio technology contains several early devices for telegraphy with damped waves; domestic production is represented by a spark transmitter made by prof. Simek for connection with Paris in 1918. A larger collection contains early radio telegraphic and radio telephone electron tube devices mostly of foreign provenance. Early wireless sets of foreign (French, English and German) as well as domestic provenance. A large collection of wireless and telecommunication sets from the 30s till almost present time of foreign and domestic production (mainly post-war production of the firm Tesla). Wireless sets used on our territory of foreign and domestic provenance and their accessories.
The collection of TV technique contains models as well as originals of mechanical-optical systems of scanning (e.g. original Okolicsany's mirror screw), testing TV set with Nipkow's disk and experimental TV transmitting and receiving system of prof. Safranek. Foreign products of early period are represented by German TV set Fernseh from 1938. The post-war period is represented mainly by TV set of domestic provenance (Tesla) as well as domestic scanning and transmitting technology. This collection also includes several apparatuses for transmission of pictures.
Electronics
A large collection contains receiving, amplifying, transmitting and special tubes from the first types (triode of Robert von Lieben) to the most modern types. Domestic production is represented by an interesting collection of several tens of electron tubes „Mars“ produced in Prague in 1921–32. This collection contains also three special diodes made for prof. August Zacek who used them in his discovery of so-called electronic oscillations of magnetron.
Information processing devices
The collection contains several tens of digital and analog machines, their peripheries and/or other components that realize conversion and processing of signals on the basis of electric and electronic principles. Domestic products are represented mainly by the series of differential analyzers MEDA, differential analyzer ADAPP and components of electro- mechanical analyzer DIANA. Domestic digital devices are represented in the collection by relay calculation puncher of prof. Antonin Svoboda and components of automatic computers SAPO and EPOS designed by him.