Hi all,
I am working on a PWM circuit using a 555 timer to drive a 3.6V DC motor from a Black and Decker Versapak screwdriver. My power source is a 9.0V, 100mA wall wart. The circuit itself is breadboarded and outputs about 8.5V and .15mA with the potentiometer turned up. The problem I seem to be having, though, is that I can't even get it to run a cheap hobby DC motor.
This is what my circuit is based on: http://www.dprg.org/tutorials/2005-11a/index.html. I've substituted the 100K potentiometer with a 35K pot and the IRFZ46N with an IRF640. I really don't know what all of the components do, I'm just putting them together to get a project to work. My best guess at the moment is to replace C1 with a larger one like a 470uF capacitor.
If anyone can offer any assistance, insight, education, etc. I would greatly appreciate it.
Kevin
I am working on a PWM circuit using a 555 timer to drive a 3.6V DC motor from a Black and Decker Versapak screwdriver. My power source is a 9.0V, 100mA wall wart. The circuit itself is breadboarded and outputs about 8.5V and .15mA with the potentiometer turned up. The problem I seem to be having, though, is that I can't even get it to run a cheap hobby DC motor.
This is what my circuit is based on: http://www.dprg.org/tutorials/2005-11a/index.html. I've substituted the 100K potentiometer with a 35K pot and the IRFZ46N with an IRF640. I really don't know what all of the components do, I'm just putting them together to get a project to work. My best guess at the moment is to replace C1 with a larger one like a 470uF capacitor.
If anyone can offer any assistance, insight, education, etc. I would greatly appreciate it.
Kevin