0 30v variable power supply circuit diagram. Use lm723 as a voltage regulator designed primarily for series regulator applications. You also able to adjust the current output value from 0002 a to 3 a. This is 0 30v 5a variable benchtop power supply circuit with voltage and current adjustable system. This project is based on the 0 30 vdc stabilized power supply with current control 0002 3 a and a new pcb layout is introduced here.
Because you can adjust an output voltage of 0v to 30v at 3a current and overload protection. The r1 r2 will functions for limitting overcurrent by works together with tr1 tr2. So cause the circuit stop provide voltage. By itself it will supply output currents up to 150 ma.
Its a stabilized power supply with variable output voltage in the range 0 30vdc 33vdc peak and variable current 3a and is ideal for your laboratory power supply. So it is small laboratory dc power supply in inexpensive cost. The circuit also incorporates an electronic output current limiter that effectively controls the output current from a few milliamperes 2 ma to the maximum output of three amperes that the circuit can deliver. The output voltage 0 30v and a maximum current of 5a.
To cater that i have designed an adjustable 30v 10a diy bench power supply circuit with a variable output from 0v to 30v and adjustable current limiting from 0a to 10a. You will able to adjust the output voltage from 0 volt up to 30 volt dc. The first thing you must have in your workshoplab is power supply. Figure 1 the circuit diagram of 0 50v 3a variable dc power supply.
When the current exceeded tr1 and tr2 will work and will have output voltage out of e lead of tr2 through led1 into 2 pin of ic1. Description schematic and pcb areread more. Also it is a high efficiency regulator using ic regulator ua723 and power transistor tip3055. This variable power supply incorporates an electronic output current limiter that effectively controls the output current from.
This is the best variable power supply circuit diagram. August 15 2008 circuitguy. A variable dc power supply is very important for electronics projects prototyping and hobbyists. Here is an adjustable 0 30 volts power supply design.
This is an ac variable power supply circuit that applies the output of 0 30v at 3a by using electronic components are bridge diode as main and control voltage by potentiometer easily. If you need ac power supply is cheaper this project is a good way. In experimenting many new electronic circuit design it is easier if you have a flexible adjustable power supply. This feature makes this power supply indispensable in.
The circuit schematic diagram is shown below. It is a robust reliable and easy to use variable dc power supply. For smaller voltages we normally use batteries as a reliable source. Instead of using batteries which have a limited lifetime a variable dc power supply can be used which is implemented in this project.
This is a high quality power supply with a continuously variable stabilised output adjustable at any value between 0 and 30vdc. The core of the circuit is 723 voltage regulator.