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About Dave Nyce
Expertise
I have been an electronics engineer for 25 years. I can answer questions on analog and digital circuits and my specialty is sensors.

Experience
I am the inventor on 23 US patents, and also some foreign ones. Developed sensors for over 25 years. Licensed private pilot (airplane and rotorcraft), have HAM radio license. I'm not an expert in computer networking.
 
   

You are here:  Experts > Computing/Technology > Job Searching: Technical > Electrical Engineering > reduce voltage

Electrical Engineering - reduce voltage


Expert: Dave Nyce - 6/19/2003

Question
Hi Dave
Could you please tell me how I could reduce a 24v power supply, so I could operate a 12v (13 amp) electric motor? And what parts I would need to do this.
Thanks for your time
Marty Dunn

Answer
This is a little difficult because of the 13 Amps. The circuit that reduces the 24V to 12V at 13 Amps will have to dissipate 156 watts, if it is a linear circuit. This means that it will be more practical to use a switching type of regulator instead of a simple linear one. The best way to implement a switching regulator is to select an IC made for your requirement and use the circuit suggested by the IC manufacturer.

For this IC, the best place to look would be with a company called "Linear Technology Corporation". On their website, you can find a section for switching regulators. Select an IC and circuit that reduce the output to 12 Volts. This is called a "bucking" configuration. Make sure the components are sized according to the application notes so that it will handle 13 amps. If you have difficulty, application assistance is available by emailing them your question.

Unfortunately, this all-experts site does not allow for sending circuit diagrams.

Hope this elps!

Dave

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