 Electric power
control
I measured the relation between the
turn angle of the variable resistor for the electric power control and the
load electric power. I used the AC ammeter (the digital circuit tester)
for the electric power measurement of the load. The wave form of the
voltage which is applied to the load is not the sine wave, so the value of
the ammeter isn't correct. The measurement result must be seen as the
reference. I used the 60-W bulb as the load.
Thermometry
I used the bulb for the 500-W photography as the load and measured
the triac temperature rise when making the output 100%. The thermometry
made the sensor of the thermocouple thermometer touch the top of the
heatsink which installed the triac by the point and was done. The
measurement result became the temperature which is higher than I assumed.
It is not the dangerous temperature but has the possibility to break the
triac when not considering the heatsink.
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