RO97085B1 - Process for manufacturing carbon powder for telephone transmitters - Google Patents

Process for manufacturing carbon powder for telephone transmitters

Info

Publication number
RO97085B1
RO97085B1 RO126208A RO12620886A RO97085B1 RO 97085 B1 RO97085 B1 RO 97085B1 RO 126208 A RO126208 A RO 126208A RO 12620886 A RO12620886 A RO 12620886A RO 97085 B1 RO97085 B1 RO 97085B1
Authority
RO
Romania
Prior art keywords
carbon powder
manufacturing carbon
telephone transmitters
microphone capsules
transmitters
Prior art date
Application number
RO126208A
Other languages
Romanian (ro)
Inventor
Pavel Roman
Sorin Cristian Popescu
Dorin Bezdadea
Nicolae Duinea
Nicoleta Radu
Carmen Ionescu
Original Assignee
Institutul De Cercetare Stiintifica Si Inginerie Tehnologica Pentru Electrotehnica
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Institutul De Cercetare Stiintifica Si Inginerie Tehnologica Pentru Electrotehnica filed Critical Institutul De Cercetare Stiintifica Si Inginerie Tehnologica Pentru Electrotehnica
Priority to RO126208A priority Critical patent/RO97085B1/en
Publication of RO97085B1 publication Critical patent/RO97085B1/en

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Abstract

Inventia se refera la un procedeu de fabricare a pulberii carbonice pentru capsule microfonice, respectiv pentru capsule microfonice folosite la telefonie, în care se foloseste ca materie prima antracit cu concentratii relativ reduse de carbon, rezultând prin tratamente termice si chimice 80 la 85%, pulberi cu tensiuni parazite de modulatie scazute si cu caracteristici stabile în timp.The invention relates to a process for the production of carbon powder for microphone capsules and microphone capsules used for telephony, in which it is used as anthracite raw material with relatively low carbon concentrations, resulting from thermal and chemical treatments 80 to 85%, powders with modulated parasitic stresses and with stable characteristics over time.

RO126208A 1986-12-27 1986-12-27 Process for manufacturing carbon powder for telephone transmitters RO97085B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO126208A RO97085B1 (en) 1986-12-27 1986-12-27 Process for manufacturing carbon powder for telephone transmitters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO126208A RO97085B1 (en) 1986-12-27 1986-12-27 Process for manufacturing carbon powder for telephone transmitters

Publications (1)

Publication Number Publication Date
RO97085B1 true RO97085B1 (en) 1989-07-03

Family

ID=40905398

Family Applications (1)

Application Number Title Priority Date Filing Date
RO126208A RO97085B1 (en) 1986-12-27 1986-12-27 Process for manufacturing carbon powder for telephone transmitters

Country Status (1)

Country Link
RO (1) RO97085B1 (en)

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