Better demonstration of a dimmer.

184

01:56:53

its a light dimmer used in most cases. Inductor is the noticable inductance of the wires.

published 4 years ago

mlira

4 years ago

Nice mosfets would be better than my circuit, but this isn't how most dimmer switches work. Most used phase angle control so they don't introduce unessecary resistance and are more efficient.

mlira

4 years ago

1nH is probably a low for the 20m of wire in a house, but I don't think it makes much difference for low current and low capacitance circuits.

tooshy

4 years ago

I would agree.

tooshy

4 years ago

also the mosfets are IGBTs

tooshy

4 years ago

only reason i said Most cases is because modern dimmers dont, but some older ones do.

tooshy

4 years ago

most actually use pwm

tooshy

4 years ago

they turn the sinewave off at certain interavals.

mlira

4 years ago

Must be different here in the UK as our old dimmer switches were just a large pots (which do the same thing with less parts)

mlira

4 years ago

PWM on it's own doesn't work with AC as it needs to be timed to the waveform. This is called phase angle control, which is similar in principal to PWM but requires a different circuit.

tooshy

4 years ago

I may have not described it right, well anyway, Thanks.

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