Specifications
- Measuring ranges
- 40 V, 5 A
- Accuracy
- load 0.01% + 6 mV; mains 0.005% + 2 mV; ripple 1 mV rms
- Construction
- silicon semiconductors
- Power supply
- 220 V +10% / −15%, 50/60 Hz
- Power consumption
- max 400 VA
- Dimensions
- 222 × 230 × 460 mm (W × H × D)
- Weight
- 20 kg
Description
The I4104 is a DC voltage source, made by IEMI in Bucharest and designed at the ICE research institute [1]. The ICE laboratory’s table gives its code as J 4104 [1].
ICE’s laboratory for electronic instruments for measuring electrical quantities designed all the institute’s generations of oscilloscopes, voltmeters, multimeters, signal generators, frequency meters, logic analysers, RLC bridges and stabilised AC power supplies; they went into production at IEMI or in ICE’s own microproduction workshop, and equipped industrial laboratories and production lines as well as teaching and research laboratories [1]. In the 1970s and 1980s about half of the components of measuring instruments were imported; after 1980 about three quarters were Romanian [1].
It gives up to 40 V at 5 A [2]. IEMI’s production table lists 7,382 units made in 1975–1985 [2].
Its list price, set in 1982, was 11,400 lei [3].
Annex III.2.14 says it was built entirely with silicon semiconductors, for supplying electronic circuits with a stable DC voltage adjustable from 0 to 40 V in 0.1 V steps, at up to 5 A [4].
Gallery
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Schematics
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Documents
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References
- [1]N. Millea (coord.) et al. – „Electronica românească. O istorie trăită”, vol. II „Electronica profesională”, AGIR, section II.4.1 „Laborator aparate electronice pentru măsurarea mărimilor electrice”, pp. 109–115
- [2]N. Millea (coord.) et al. – „Electronica românească. O istorie trăită”, vol. II „Electronica profesională”, AGIR, sections III.2 „Producția IEMI” and III.3 „Comentarii tehnico-economice”, pp. 302–317, and annex III.2.3 „Producția IEMI – aparate electronice de măsură și industriale”, pp. 383–386
- [3]N. Millea (coord.) et al. – „Electronica românească. O istorie trăită”, vol. II „Electronica profesională”, AGIR, annex III.2.5 „Lista cu prețurile produselor – IEMI”, pp. 393–396
- [4]N. Millea (coord.) et al. – „Electronica românească. O istorie trăită”, vol. II „Electronica profesională”, AGIR, annex III.2.14 „Surse de alimentare”, pp. 674–677