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Question about a dc motor

Christian Keith

Jan 21, 2016
3
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Jan 21, 2016
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3
I am going to be using a small dc motor for a project. I need to be able to turn the switch on and I'd like for the motor to run for about 5 seconds and pause for about 15 seconds and repeat automatically. What do I need to use to achieve this?
 

Externet

Aug 24, 2009
891
Joined
Aug 24, 2009
Messages
891
You need a timer integrated circuit set to that 1:3 duty cycle and 20 seconds time on square wave and a transistor or relay driven by it to energize the motor.
 

BobK

Jan 5, 2010
7,682
Joined
Jan 5, 2010
Messages
7,682
With the transistor or relay being optional if the current the motor draws is <200mA and you use an NE555 chip.

Bob
 
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