Tube meter
A tube measuring device , also known as a tube tester, is used for electrical measurement and testing of electron tubes . They were developed, built and sold to enable professionals to provide assistance in assessing the quality of the tube systems.
Measurements
Tube measuring devices are required in extracts for measuring tube parameters such as:
- Vacuum testing
- Broken filament
- Heating current consumption
- Short circuit and resistance values of the electrodes to each other
- Grid and anode currents
- Steepness
Furnishing
Simple tube measuring devices only have one test option for the tube heating. Higher-quality versions also offer several display means for the parallel display of the interaction between the control grid voltage and the grid voltage as well as the change in anode current. As part of the ongoing development of electron tubes, the measuring devices were e.g. B. equipped with the sockets of the new generation of tubes.
As special versions, military versions were mostly modified from civilian models. With the advent of television in the 1940s, special picture tube measuring devices were added, which also often provided a regeneration option for deaf cathodes.
service
The electrode assignment and the individual parameters such as heating voltage, grid voltage and anode voltage must be carried out manually by the tester. To simplify the measuring process, card systems (e.g. from Max Funke ) for "quick programming" of the electrode allocation and later also semi-automated systems (Hickok Cardmatic Tube Tester) have been developed.
Tube measuring device manufacturer (selection)
- Gutters
- Max Grundig (tuba test)
- Siemens
- Iskra
- Philips
- Telefunken
- RCA
- Western Electric Company
- Max Funke
literature
- Karl-Friedrich Müller: The Funke tube measuring device W 19 and its test cards in an electronic file box, series of publications on radio history, Verlag Walz, 2004, ISBN 3936012040
Web links
Individual evidence
- ↑ http://www.alte-messtechnik.de/hub/diverses/roehrenpruefer.htm
- ↑ Archived copy ( Memento of the original dated May 7, 2013 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ http://www.manager-magazin.de/unternehmen/artikel/0,2828,245036,00.html
