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Specifications
- Power rating
- 20 W into 16 Ω (alarm)
- Power supply
- 12 V (vehicle battery)
- Dimensions
- 70 × 120 × 200 mm (W × H × D)
Sources: [2]
Description
The ADA 03 is an amplifier with an audible alarm for radiotelephones, a modernised, more reliable ADA 02, made by IEMI in Bucharest [1]. IEMI made radiotelephones under a licence bought in 1968 from the Swedish firm SRA (Svenska Radio Aktiebolaget), later modernised by IEMI itself; they were used in industry, on the railways, in rescue services, agriculture, transport, construction, by the police and the fire brigade [1].
According to annex III.2.15 the ADA 03 gave 20 W into 16 Ω for the alarm signal (the ADA 02 25 W), including a two-tone signal with each tone held for 1 s; it drew up to 4.5 A with a signal and 300 mA without [2].
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, 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
- [2]N. Millea (coord.) et al. – „Electronica românească. O istorie trăită”, vol. II „Electronica profesională”, AGIR, annex III.2.15 „Echipamente de radiocomunicații profesionale”, pp. 678–689