Electrodeless fluorescent lamp voltage stabilization constant current power source based on voltage detection circuit

Abstract

The invention discloses an electrodeless fluorescent lamp voltage stabilization constant current power source based on a voltage detection circuit. The electrodeless fluorescent lamp voltage stabilization constant current power source is characterized by mainly comprising a transformer T1, a diode rectifier U, a pulse transformation circuit, a polar capacitor C1, a voltage stabilization diode D1, a source electrode amplification circuit connected with a negative electrode output end of the diode rectifier U, a voltage detection circuit connected in series between a positive electrode output end of the diode rectifier U and the source electrode amplification circuit, and a buffer triggering circuit connected in series between the source electrode amplification circuit and the pulse transformation circuit. According to the power source, a voltage is modulated into a high frequency pulse width voltage, an output pulse peak value is kept to be stable through transformation of the pulse transformer, an output voltage is made to be consistent with a rated start voltage of an electrodeless fluorescent lamp, and stable voltage output is guaranteed.

Description

technical field [0001] The invention relates to the field of electronics, in particular to an electrodeless fluorescent lamp stabilized voltage and constant current power supply based on a voltage detection circuit. Background technique [0002] Electrodeless fluorescent lamps, that is, electrodeless lamps, cancel the filaments and electrodes of traditional fluorescent lamps, and use the principle of electromagnetic coupling to excite mercury atoms from the original state to excited states. Good color rendering and other advantages. Before the electrodeless fluorescent lamp is lit or the arc burns, it has a high input impedance, so to light the electrodeless fluorescent lamp, a stable high voltage is required as the rated starting voltage. However, the existing electrodeless fluorescent lamp power supply has the problem of unstable output voltage, which causes flickering when the electrodeless fluorescent lamp is started, resulting in too long start-up time of the electrode...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defect that the output voltage of the power supply of the electrodeless fluorescent lamp in the prior art is not stable, and to provide a voltage-stabilized constant-current power supply for electrodeless fluorescent lamps based on a voltage detection circuit

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