All resistors are 1/8 watts, 1%, MFR R1 = 14K3 (12K1 for 60Hz), R2, R3, R4, R7, R8 = 1K, R5, R6 = 2K2 (1K9 for 60Hz), R9 = 20K C1, C2 = 1µF, TANT. C3 = 2µF, TANT (TWO 1µF IN PARALLEL) C4, C6, C7 = 2.
[pdf] The windwheel of (10–70 CE) marks one of the first recorded instances of wind powering a machine. However, the first known practical wind power plants were built in , an Eastern province of (now Iran), from the 7th century. These "" were vertical axle windmills, which had long vertical with rectangular blades. Made of six to twelve covered.
[pdf] The current wind turbines adopt forced air cooling and liquid cooling prevalently, among which, the wind generating set with power up to 750 kW usually takes forced air cooling as a main cooling method.
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