N2601

The N2601 is an electronic stroboscope, made by IEMI in Bucharest and designed at the ICE research institute in Bucharest [1].

ICE’s laboratory for electronic instruments for measuring non-electrical quantities designed approved prototypes for many branches of the economy: strain gauge equipment (some configurations were exported to East Germany in 1971–1974 and 1977–1989), vibration meters, dimensional gauges, ultrasonic non-destructive testers, geophysical well-logging equipment and railway equipment [1]. Its designs were made in series at IEMI (27 types) and at the Precision Mechanics Enterprise (5 types), or in ICE’s microproduction workshop (45 types) for small series and one-off models [1].

IEMI’s production table lists 1,339 units made in 1975–1981 [2].

Annex III.2.11 says it measured the frequency of periodic motion without mechanical contact, such as the speed of rotating parts and slip, and was also used for the dynamic balancing of turbines, grinding wheels and car wheels, for synchronising textile and printing machines and for setting the ignition timing of engines, by lighting the moving part with short, intense flashes (under 10 µs) from a 15 W xenon lamp. It could be synchronised by its internal generator (5–100 Hz), by the mains or by an external signal (5–5000 Hz) [3].