Hi all,
To automatically regulate blower speed, how about the following:
Assume you have a 30 W, 110 V blower.
Wire a 110 V - 6 volt 30 VA transformer secondary in series with the HV
primary transformer.
The HV transformer is many times larger than the 6 V one. Thus the
current through the 6 volt winding will be highest when the amp is
working at maximum power and lowest when the amp is idling. The loss of
HV should be minimal. About 6 %.
Connect the blower to the 110v - 6 volt transformer primary. Voila.
The 6 Volt winding should have a few turns added/removed in order to
have 110 V at the blower when the amp is working at maximal output.
Anyone already tried this?
Vy 73 de HB9SLV
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