Home Power

Home Power

4.11 - 1251 ratings - Source

NE555 Figure 1:12 Volt, 10 Amp, variable speed motor controller Figure 2: 24 Volt version uses a LM7812 to regulate ... For example, a number of companies ( Backwoods Solar, AEE, Electron Connection, etc) sell 12 and 16 inch diameter ventilation fans with DC motors. ... The circuit I built has been in 24 hour-a-day service for 6 months, powering a 3 Amp fan. ... You can vary the duty cycle of the 555 chip, and thus the speed of the motor, by turning the potentiometer attached to pin 7.

Title:Home Power
Publisher: - 1995


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