Author Archive

Second bad fluorescent starter

On my earlier Bad safety starter posting I told about problems in one electronic fluorescent starter Axxel S10. I was wondering if this was a problem was on just this one unit I had or was it a more widespread problem problem (manufacturing or design error). Now I suspect manufacturing or design problems, because second →

Bad safety starter

In my earier posting LED tube replaces fluorescent I wrote that due real Fluorescent lamp fire danger I have pretty much tried to get rid of potentially dangerous tradtional starters in the fuorescent lamps. So I replaced the starter with electronic safety model – if bulb does not start, it will stay off without heating. →

Useful filter design tools

Every now and then situation arises where you need to construct simple filter circuits. Usually a low pass circuit is the most often needed one. A low-pass filter is a filter that passes signals with a frequency lower than a certain cutoff frequency and attenuates signals with frequencies higher than the cutoff frequency. Low-pass filters →