FUNKE TUBE TESTER MODEL W 19

All information necessary for testing, i. e. the number of the card and the tests which are to be made (for instance: that there are two systems to be checked) are printed at the top right-hand corner. When only testing a tube, one needs not pay attention to any other data. Thus, all the test cards together represent a complete tube file.

The tube tester fs of universal use in the shop for it can also be used as an ohmmeter with four ranges for resistors from 0.1 ohm to 5 megohm; for these measurements four special test cards make the right connections automatically, as a leakage tester for electrolyts of all sizes and working voltages by means of another 14 test cards, as a DC current and voltage meter, as continuity and short tester, etc.

The tube tester is contained in a polished walnut case with removable lid. Inside the cover is a list of the European Standard and American tubes. The same list on cardboard is also supplied together with the tube tester. Other tube and punched card lists on Telefunken, Valvo, Philips, Tungsram, Siemens, Tekade, tubes eth. are shown in the book which contains information on the test cards.

SUMMARY:

The Tube Tester W 19 ist the most useful device for a fast check in the shop where untrained people are in charge of it, frequently even diverted by customers annoying questions, The Tube Tester W 19 takes care of this unpleasant situation because there is nothing to be adjusted or thought about, a test card (punched card) is simply put on top of the device, some plugs are placed in the open holes and the only knob is tourned through all its 13 positions, no mistake can be made.

For research and test work in a laboratory where there is no rush and one is able to concentrate on the work using tube characteristics etc, there are special tube testers on the market where all voltages and currents may be adjusted to any suitable value; but those testers are much more expensive and can be handled by trained technicians only; however, even then errors may occur which are impossible when using the Tube Tester W 19.