DEVICE FOR IGNITION OF GAS DISCHARGE LAMP AND METHOD OF ITS OPERATION Russian patent published in 2023 - IPC H05B41/26 

FIELD: electrical engineering.

SUBSTANCE: invention can be used to ignite and power gas-discharge lamps, in particular bactericidal high-power ultraviolet (UV) lamps used to disinfect various media, including liquid media. The device for ignition of a gas-discharge lamp contains a control unit, an input circuit connected to a controlled inverter control unit, including a capacitive voltage divider. The input circuit additionally contains at least one current limiter shunted by a key controlled by the control unit, a mains voltage sensor and a mains current consumption sensor. The inverter contains a voltage sensor for the capacitive divider of the inverter and a voltage sensor for the lamp, and the control unit is connected to the control device. The method of operation of the device for ignition of a gas-discharge lamp includes switching on the device, electrical action on the lamp electrodes, request of the integrity of the lamp electrodes, analysing result of the request, heating the lamp electrodes, applying the lamp ignition voltage. For operation of the device, the main parameters of the device operation are set. After switching on, the device checks for mains voltage and for leaks from the cable and/or lamp circuits to the ground circuit. Next, the device applies a test voltage to the lamp, after which it checks for leakage in the cable and/or lamp circuit, followed by stopping the supply of test voltage to the lamp and turning off the current supply to the lamp electrodes. Before the start of normal operation of the lamp, the device stabilizes the work of the lamp according to the specified mode. During normal operation of the lamp, the device performs a cyclic check of the mains voltage, a check for leakage from the lamp cable and/or lamp circuits to the ground circuit, a check for the diode effect in the lamp, and a check for received control commands. In the event of a negative result obtained as a result of the test, the device is switched to emergency mode or turned off and, based on the results of the tests, the control unit decides to restart.

EFFECT: increased reliability and safety of operation of a gas-discharge lamp.

10 cl, 4 dwg