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Notes:[/FONT]
[FONT=Arial,Helvetica] Here, S1 and S2 are normally open , push to close, press button switches. The diodes can be[/FONT]
[FONT=Arial,Helvetica] red or green and are there only to indicate direction. You may need to alter the TIP31 transistors[/FONT]
[FONT=Arial,Helvetica] depending on the motor being used. Remember, running under load draws more current. This[/FONT]
[FONT=Arial,Helvetica] circuit was built to operate a small motor used for opening and closing a pair of curtains. As an[/FONT]
[FONT=Arial,Helvetica] advantage over automatic closing and opening systems, you have control of how much, or how[/FONT]
[FONT=Arial,Helvetica] little light to let into a room. The four diodes surriunding the motor, are back EMF diodes. They[/FONT]
[FONT=Arial,Helvetica] are chosen to suit the motor. For a 12V motor drawing 1amp under load, I use 1N4001 diodes.[/FONT]