Burner flame monitor supply voltage circuit for power plant

Burner flame monitor supply voltage circuit for power plant

The circuit has a frequency multiplier circuit (D1-D4) supplied from two phase lines (PH1,PH2) of the AC network supply and supplying the flame rod (FR) of the flame monitor (FA) via a capacitor (C). One of the phase lines (PH2) acts as a reference potential line for the flame monitor, the frequency...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: PAUW, JUR DE, EMMEN, NL, VEGTER, DERK, NIEUW AMSTERDAM, NL
Format: Patent
Sprache:eng ; ger
Schlagworte:
BLASTING
COMBUSTION APPARATUS
COMBUSTION PROCESSES
HEATING
LIGHTING
MECHANICAL ENGINEERING
REGULATING OR CONTROLLING COMBUSTION
WEAPONS
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Beschreibung
Zusammenfassung:The circuit has a frequency multiplier circuit (D1-D4) supplied from two phase lines (PH1,PH2) of the AC network supply and supplying the flame rod (FR) of the flame monitor (FA) via a capacitor (C). One of the phase lines (PH2) acts as a reference potential line for the flame monitor, the frequency multiplier circuit provided by a diode bridge circuit and a threshold stage reducing the output voltage to zero when it is below a given threshold value.