resistor, 6 volts to 4.5 volts?

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CutDog504

Silver - Posts: 637

Joined: May 14, 2002

Location: Louisiana, United States

Posted: August 26, 2009 at 9:55 AM / IP Logged

What value resistor would I need to change 6 volts to 4.5 volts?

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91stt

Silver - Posts: 564

This member consistently provides reliable information

Joined: May 24, 2006

Location: New Jersey, United States

Posted: August 26, 2009 at 1:03 PM / IP Logged

how much current are you expecting for the circuit?

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KPierson

Platinum - Posts: 3,527

Joined: April 14, 2005

Location: Ohio, United States

Posted: August 26, 2009 at 3:32 PM / IP Logged

A resistor wouldn't work.

An LM317 adjustable voltage regulator or even a zener diode (depending on how much current you need) would work best.

Kevin Pierson

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CutDog504

Silver - Posts: 637

Joined: May 14, 2002

Location: Louisiana, United States

Posted: August 26, 2009 at 9:42 PM / IP Logged

I need less than 3 or 4 amps

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CutDog504

Silver - Posts: 637

Joined: May 14, 2002

Location: Louisiana, United States

Posted: August 26, 2009 at 9:43 PM / IP Logged

Actually, it might only be like 1 amp.

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CutDog504

Silver - Posts: 637

Joined: May 14, 2002

Location: Louisiana, United States

Posted: August 26, 2009 at 9:47 PM / IP Logged

I have a 6-volt 5 amp power supply, but I need to power something at 6 volts AND something at 4.5 volts. It's two battery operated devices, the 6 volt one normally takes 4 AA batteries, and the 4.5 volt one takes 3 AAA batteries. Would this be possible to run both on the same power supply?

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resistor, 6 volts to 4.5 volts?

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