IE42213L - Fm-detector - Google Patents

Fm-detector

Info

Publication number
IE42213L
IE42213L IE74675A IE74675A IE42213L IE 42213 L IE42213 L IE 42213L IE 74675 A IE74675 A IE 74675A IE 74675 A IE74675 A IE 74675A IE 42213 L IE42213 L IE 42213L
Authority
IE
Ireland
Prior art keywords
amplifier
filter
output
transistor
it1034825b
Prior art date
Application number
IE74675A
Other versions
IE42213B1 (en
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of IE42213L publication Critical patent/IE42213L/en
Publication of IE42213B1 publication Critical patent/IE42213B1/en

Links

Landscapes

  • Circuits Of Receivers In General (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

The frequency modulated demodulator has two input signals which have the same nominal central frequency. It comprises an FM-filter (18) and transistor pairs (Q1, Q2) (Q8, Q8) and non-inverting different amplifiers with an output amplifying amplifier (Q10) in the emitter line. These circuits set a series of pulses of variable time. Each of the emitters of the input transistors is connected with an constant current source of about 130 muA. Output from the filter is rectified by diodes (D4D5) before amplification and transmission to the audio amplifier. The AM stage of the heterodyne system similarly includes an AM filter transistor amplifier and output amplifier. The combined system an AM-FM converter with AFC and ACC. [IT1034825B]
IE74675A 1974-04-04 1975-04-03 Fm-detector IE42213B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US45790874A 1974-04-04 1974-04-04

Publications (2)

Publication Number Publication Date
IE42213L true IE42213L (en) 1975-10-04
IE42213B1 IE42213B1 (en) 1980-07-02

Family

ID=23818545

Family Applications (1)

Application Number Title Priority Date Filing Date
IE74675A IE42213B1 (en) 1974-04-04 1975-04-03 Fm-detector

Country Status (3)

Country Link
HK (3) HK42080A (en)
IE (1) IE42213B1 (en)
IT (1) IT1034825B (en)

Also Published As

Publication number Publication date
IE42213B1 (en) 1980-07-02
HK43180A (en) 1980-08-22
HK42080A (en) 1980-08-15
IT1034825B (en) 1979-10-10
HK42180A (en) 1980-08-15

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