Converter for fluorescent lamp with controller. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Lighting
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The presented converter circuit for fluorescent lamps is designed to work with PL type lamps with a power of 13W, two output contacts.
(click to enlarge)
As a power source, any battery with a nominal voltage of 12 volts or any other power source can be used. Considering that the output voltage in a pulse is about 200 volts, it is necessary to comply with all safety rules and requirements during assembly and operation.
A controller has been added to the converter, which turns off the lamp when the battery voltage drops below 10 volts, when the lamp is turned on in charge mode. Inductance L1 L-440 mkGn. Transformer T1 W1=20V Lw1=150 mkGn, W2=110V Lw2=4.5 mGn
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| Random news from the Archive TPL5110 - Nano Power Management Timer
01.08.2015
Texas Instruments introduced the TPL5110 and TPL5010 ultra-low power timers, which complement the existing TPL5000 and TPL5100 family of timers.
The TPL5110 is a timer with an integrated MOSFET driver designed to control an external switch and turn off the current load in battery-powered devices. With low own consumption, about 35 nA, using the driver built into the TPL5110, it is possible to turn off the load at specified time intervals and significantly reduce the current consumption of the system in sleep mode. Such a solution will be in demand in energy storage devices and wireless sensors, as it allows to relax the requirements for the capacity and dimensions of the batteries used.
The TPL5110 differs from the previously introduced TPL5000 and TPL5100 timers with an extended time interval and a smaller package. The time interval of the timer is set with an accuracy of about 1% using an external resistor in the range from 100 ms to 2 hours.
It is also worth noting the possibility of using the one-shot function, when the timer turns on the MOSFET only for the duration of a single cycle after the supply voltage is applied. The choice between single shot mode and periodic firing is done using an external pin (ONE_SHOT). When using the TPL5110, regardless of the operating mode, it remains possible to control the power switch yourself using the M_DRV pin.
The TPL5110 timer is available in a 23-pin SOT6 package and is designed to operate in the temperature range from -40 to 105°C.
Main characteristics
Supply voltage range: 1,8 to 5,5 V;
Ultra-low self-consumption current: 35 nA;
Programmable time interval: 100ms to 7200s;
Time interval setting accuracy: 1%;
Built-in external MOSFET driver;
Single vibrator mode;
Small package: SOT23-6 (3x3mm);
Possibility of forced inclusion of MOSFET;
Working temperature range: from -40 to 105°С.
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