Fire alarm circuit

The utility model discloses a fire alarm circuit, including NPN triode Q1, thermistor R1, LED lamp D1, resistance R2, resistance R3, electric capacity C1, electric capacity C2, 555 timer U1, NPN triode Q2, buzzer LS. The utility model provides a simple structure, fire alarm circuit with low costs ut...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	ZHANG SHENGFEN
Format:	Patent
Sprache:	eng
Schlagworte:	ALARM SYSTEMS ORDER TELEGRAPHS PHYSICS SIGNALLING SIGNALLING OR CALLING SYSTEMS
Online-Zugang:	Volltext bestellen
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