DEVELOPMENT OF A HEARING AID USING TRANSISTORS AND PRINTED CIRCUITS
Document Type:
Collection:
Document Number (FOIA) /ESDN (CREST):
CIA-RDP80-00810A006100010001-5
Release Decision:
RIPPUB
Original Classification:
S
Document Page Count:
1
Document Creation Date:
December 21, 2016
Document Release Date:
June 19, 2008
Sequence Number:
1
Case Number:
Publication Date:
March 24, 1955
Content Type:
REPORT
File:
Attachment | Size |
---|---|
CIA-RDP80-00810A006100010001-5.pdf | 60.9 KB |
Body:
Approved For Release 2008/06/19: CIA-RDP80-00810A006100010001-5
CENTRAL INTELLIGENCE AGENCY
INFORMATION REPORT
COUNTRY East Germany
SUBJECT Development of a' Searing Aid u`sing
'transistors and.Printe'd,"Circuits
DATE OF INFO.
PLACE ACQUIRED
DATE ACQUIRED
21+ March 1955
1. Tn late December 1954, the Zentrallaboratorium fuer Fernmeldetechnik
(Central Laboratory for Telecommunications Technology - ZLF) in Berlin-
Treptow received an order from the Ministry for Machine Construction to
develop an audio device for the hard-of-hearing. The Z]CF' accepted the
order, Witch is expected to be completed during 1955-
2* Although the instr.:ment itself is of no particular economic importance,
the fact is reported because this development will be the first one in
East Germany which makes use of transistors and printed.circuits. The
ZLF will use transistors made by VEB :erk fuer Bauelemente der Fernmelde-
technik (formerly Dralowid) in Teltowo In addition, printed circuits and
carbon layer resistors, also produced by the enterprise mentioned, will
be used.
3o The Ministry for Machine Construction has assigned the development of
printed circuits to Dr. Matthias Falter of the Dralowid firm, who is also
responsible for transistor developmetilt there. The Ministry for heavy In-
dustry accepted the obligation to deliver the germanium needed for the
transistors. This germanium is expected to be obtained from East German
waste heaps. According to the Ministry for Heavy Industry, 12 to 14 kg.
THE SOURCE EVALUATIONS IN THIS REPORT ARE DEFINITIVE.
THE APPRAISAL OF CONTENT IS TENTATIVE,
(FOR KEY SEE REVERSE)
This material contains information affecting the
National Defense of the United States within the
meaning of the Espionage Laws, Title 18, U.S.C.
Secs. 793 and 794, the transmission or revel-
ation of which in any manner to an unauthorized
person is prohibited by law.
REPORT
DATE DISTR.
NO. OF PAGES
REQUIREMENT
REFERENCES
ORR Ei x bsI Ev I:
(Note: Washington distribution indicated by "X"; Field distribution by
Approved For Release 2008/06/19: CIA-RDP80-00810A006100010001-5