Maker Pro
Maker Pro

DC voltage decrease

M

muhaha

Jan 1, 1970
0
Is there a way to cut the 9V DC supply to 3V without wasting 6V at a regulator ?
I'm looking for most mAh i can get.

Thanks.
 
J

John Popelish

Jan 1, 1970
0
muhaha said:
Is there a way to cut the 9V DC supply to 3V without wasting 6V at a regulator ?
I'm looking for most mAh i can get.

Thanks.

Switching regulators are precisely for this. They do not waste excess
voltage, but convert one voltage to another, somewhat like a
transformer does for AC.

Read the basics here:
http://www.national.com/appinfo/power/files/f5.pdf
 

babuchemy

Jul 16, 2009
1
Joined
Jul 16, 2009
Messages
1
Car 12VDC power to 19VDC suitable for laptop charging

Hello
I would like to convert 12 VDC power supply in the cigerette lighter to 19V DC to be able to charge a laptop battery.
What is the best method to step up?
regards
Babu
 
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