Buck/Boost Converter With ADJUSTABLE Voltage AND Current(For Use in converting a Computer Power Supply to Lab BenchPower Supply

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STD Buck/Boost Converter With ADJUSTABLE Voltage AND Current(For Use in converting a Computer Power Supply to Lab BenchPower Supply

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Update time： 2019-01-23 23:22:13

Creation time： 2019-01-22 00:09:24

Description

This circuit uses the Buck/Boost Converter circuit for typically for use in a lab bench power supply. It features both adjustable voltage AND current using potentiometers. Without a buck/boost converter,a computer power supply can only provide a 3.3V, 5V and 12 supply lines. With the buck/boost converter created with the aid of a 555 timer, adjustable voltage is allowed. A simple transistor is used to increase 555 IC output current. Additionally, acurrent divider is used to create current-controlled current source to create that allows adjustable output current using a potentiometer. This allows both adjustable voltage and current of the buck/boost converter. Hence, a fully-featured lab bench power supply can be built.

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ID	Name	Designator	Footprint	Quantity	Mounted
1	10 AC 1 0	V2	HDR1X2	1	Yes
2	555_BJT_EE	U2	DIP8	1	Yes
3	10nF	C4,C1	CAP-CT4G-0805-2.54MM	2	Yes	C254083
4	1M	R4	AXIAL-0.8	1	Yes	C274565
5	12K	R3	AXIAL-0.6	1	Yes	C119606
6	1.5K	R1	AXIAL-0.8	1	Yes	C119714