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chrism
New Member
Australia
1 Posts |
 Posted - Feb 01 2012 : 05:17:24 AM
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Hi, I'm Chris. I'm a little new to electronics, and still don't quite understand the implications of making a few changes.
In your circuit diagram for the Fixed Voltage Power Supply (http://www.aaroncake.net/circuits/supply6.asp), I'm want to try and get as an efficient conversion of power as possible.
I only need 5v as this is used for a USB application.
I'm looking at replacing the LM7805 with a R-785.0-1.0 (I dont need more than 1amp).
I'm hoping to avoid a heatsink this way.
I need some help in determining how this will effect the capacitors...
Also, are there any other suggestions for increasing the efficiency?
Many thank for the site. |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Feb 02 2012 : 10:09:43 AM
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This circuit isn't efficient, it's an old linear power supply.
The datasheet of the DC/DC regulator you mentioned shows you how to use it in a circuit.
If this is only a one time use circuit (as in, not production), why not just get a switching power adapter that outputs 5V? Very, very common (cell phones, routers, switches, hubs, etc. etc.). I have a huge box of them just sitting around.
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Hi - I'm new - Q - Fixed Voltage Power Supply
