IT1153654B - Electronic door chime type circuit - Google Patents

Electronic door chime type circuit

Info

Publication number
IT1153654B
IT1153654B IT24358/82A IT2435882A IT1153654B IT 1153654 B IT1153654 B IT 1153654B IT 24358/82 A IT24358/82 A IT 24358/82A IT 2435882 A IT2435882 A IT 2435882A IT 1153654 B IT1153654 B IT 1153654B
Authority
IT
Italy
Prior art keywords
circuit
supply
chime
type circuit
electronic door
Prior art date
Application number
IT24358/82A
Other languages
Italian (it)
Other versions
IT8224358A1 (en
IT8224358A0 (en
Inventor
Gunter Lihl
Werner Boser
Original Assignee
Grothe & Soehne Kg A
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 Grothe & Soehne Kg A filed Critical Grothe & Soehne Kg A
Publication of IT8224358A0 publication Critical patent/IT8224358A0/en
Publication of IT8224358A1 publication Critical patent/IT8224358A1/en
Application granted granted Critical
Publication of IT1153654B publication Critical patent/IT1153654B/en

Links

Abstract

Electronic multiple chime doorbell equipment comprises a power supply with pulse start for the chime sequence and a l.f. amplifier with loudspeaker audio output. The bell push is connected (1,2) to a voltage doubling circuit (3 to 5) which charges high capacity storage capacitors (4,5) to a voltage above the circuit supply level. The supply for this higher charge comes from the main day battery or mains l.v. power pack (13) via a power transistor (6). The extra voltage supplies the pulse start to the chime integrated circuit (12) for it to supply a loudspeaker (15) circuit.
IT24358/82A 1981-11-21 1982-11-22 Electronic door chime type circuit IT1153654B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3146157 1981-11-21

Publications (3)

Publication Number Publication Date
IT8224358A0 IT8224358A0 (en) 1982-11-22
IT8224358A1 IT8224358A1 (en) 1984-05-22
IT1153654B true IT1153654B (en) 1987-01-14

Family

ID=6146869

Family Applications (1)

Application Number Title Priority Date Filing Date
IT24358/82A IT1153654B (en) 1981-11-21 1982-11-22 Electronic door chime type circuit

Country Status (1)

Country Link
IT (1) IT1153654B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2208085A1 (en) * 2002-06-27 2004-06-01 Manuel Lopez Macias Electronic ringer for doors of houses, has base body or casing with printed circuit board, where all electronic components are assembled, and connects with switch button and power supply

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2208085A1 (en) * 2002-06-27 2004-06-01 Manuel Lopez Macias Electronic ringer for doors of houses, has base body or casing with printed circuit board, where all electronic components are assembled, and connects with switch button and power supply

Also Published As

Publication number Publication date
IT8224358A1 (en) 1984-05-22
IT8224358A0 (en) 1982-11-22

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