EP 1064629 A1 20010103 - CONTROL CIRCUIT FOR AN ALARM TONE GENERATOR
Title (en)
CONTROL CIRCUIT FOR AN ALARM TONE GENERATOR
Title (de)
EINE TREIBERSCHALTUNG FÜR EINEN ALARMTONGEBER
Title (fr)
CIRCUIT DE COMMANDE POUR GENERATEUR DE SIGNAL D'ALARME ACOUSTIQUE
Publication
Application
Priority
- AU 5953798 A 19980325
- DE 9900803 W 19990322
Abstract (en)
[origin: WO9949433A1] The present invention relates to a control circuit (2) which is intended for controlling an alarm tone generator (24) and comprises the following units: a signal generator (6, 11) for emitting a first signal; a converter (8, 10) for converting the first signal into a second signal for the alarm tone generator ; a battery (4) for the power supply of the control circuit; and a voltage raising circuit (30, 32) for increasing the voltage supply of the generator.
IPC 1-7
IPC 8 full level
G08B 3/10 (2006.01)
CPC (source: EP US)
G08B 3/10 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
WO 9949433 A1 19990930; AU 5953798 A 19981203; AU 718281 B2 20000413; DE 59911098 D1 20041223; EP 1064629 A1 20010103; EP 1064629 B1 20041117; US 6603392 B1 20030805
DOCDB simple family (application)
DE 9900803 W 19990322; AU 5953798 A 19980325; DE 59911098 T 19990322; EP 99919107 A 19990322; US 64704400 A 20001115