DC Voltage Step - Down - CR4 Discussion Thread

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Max Ngwira Active Contributor Join Date: Nov 2011 Posts: 13	DC Voltage Step - Down 09/02/2012 4:07 AM
	Dear Engineers, Please tell me a way, if there is one, to step down DC voltage to a customised voltage.
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Joshi Guru Join Date: Oct 2007 Location: India Posts: 1246 Good Answers: 34	#1 Re: DC Voltage step - down 09/02/2012 4:15 AM
	You can have a customised, variable, voltage regulator to get required step down DC voltage.
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JohnDG Guru Join Date: May 2006 Location: Reading, Berkshire, UK. Going under cover. Posts: 9684 Good Answers: 468	#2 Re: DC Voltage step - down 09/02/2012 5:15 AM
	Simplest - resistive divider: Only gives constant voltage out for constant supply voltage and constant load. Power lost = voltage dropped across resistors x current through them. Adjustable linear regulator: Mostly independent of supply voltage and load current. Power lost = voltage dropped across regulator x current through it. Adjustable switching regulator: Mostly independent of supply voltage and load current. Little power lost. May have switching noise on output unless well filtered. __________________ "Love justice, you who rule the world" - Dante Alighieri
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#3 Re: DC Voltage Step - Down 09/03/2012 3:20 AM
	Option 4: "buck" power supply. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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JohnDG Guru Join Date: May 2006 Location: Reading, Berkshire, UK. Going under cover. Posts: 9684 Good Answers: 468	#4 In reply to #3 Re: DC Voltage Step - Down 09/03/2012 5:02 AM
	Thought that was a switching regulator . __________________ "Love justice, you who rule the world" - Dante Alighieri
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JohnDG (2); Joshi (1); PWSlack (1)

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DC Voltage Step - Down