Having smoked a bit of typical electronic ballasts on the Internet, I got an idea .. What if the connection of 4 lamps of 18 W to our ELECTRONIC BALLAST EB-ECG 2X36 W will creep through ??? The switching circuit is very similar !!!
And after dancing with a soldering iron in the aroma of rosin around this idea, I got the following result …
Do not forget that all contacts of this circuit are not galvanically isolated from the mains. Follow the techniques and safety measures to avoid electric shock. Can shock!
A typical scheme of a budget ECG 4X18 W is approximately the following.
The connection on the block looks like this.
And after some thought I just decided to connect in series two lamps of 18 W in each arm of the ECG 2x36W. The typical scheme of such electronic ballasts is approximately the following.
And connected it to its outputs like this.
The temperature of the lamps and electronic ballasts has not changed. But based on personal experience, it is better to load such cheap electronic ballasts only on one shoulder. With such a switch on, the electronic ballast does not overheat at all and its service life increases significantly!
Thus, many lamps in the offices were repaired. But after 3 years, the management decided to replace all lamps with LED, energy-saving … In which LEDs began to burn out cheerfully and quickly after a year … But that's another story …