1V-27V 3A Variable DC Power Supply Circuit Diagram

1V-27V 3A Variable DC Power Supply Circuit Diagram
Above diagram is the scheme of variable DC power supply with output range of 1V to 17V. This power supply is used very few components, the power supply will be so easy to build. Serial power transistor which will be known and popular 2N3055, power supply has a voltage control and current. The source of alternating voltage is 24V transformer. This circuit used Integrated Circuit / IC LM723, also known as UA723 which is a dedicated integrated circuit design

12V / 20A Regulated DC Power Supply

12V / 20A Regulated DC Power Supply
Here the circuit diagram of 12V / 20A Regulated DC Power Supply using 5 pieces of power transistor MJ2955, voltage regulator 78S12. It will give you regulated output voltage of 12V-15V 20A. A 350VA transformer power, the primary winding 230 , secondary winding is 18V . The secondary voltage of 18V with the load of the transformer , the voltage at idle , it is customary in the case of such efforts is higher than 5 % to 10

Power supply 4.5 A with 3 LM317 in parallel

Power supply 4.5 A with 3 LM317 in parallel
This lm317 variable power supply can supply a voltages from 1.2V to 30V with a current 3 amperes, just as the title of this series based on LM317T voltage regulator, the LM317T regulator provide around 1.5 amperes on the heatsink, so by installing a parallel two or three of them will get a voltage source capable of providing 3 amperes. Obviously this also depends on the transformer used. (more…)

Power Supply source +5 Vdc +12 Vdc

Power Supply source +5 Vdc +12 Vdc
This power supply circuit shows a steady source of continuous power supply combined with an output of +5 VDC and +12 VDC to ground, it is estimated for designing a current of about 900mA Max, enough to power any digital circuit with a relay output,that must be taken into account is the cascade design makes total consumption is the sum of the currents provided by the two outputs. Please note that the regulator should be equipped with a heat

57V variable power supply up to 1.5 A

57V variable power supply up to 1.5 A
In each workshop you must have a source that is able to provide each current and voltage in a quite acceptable range of possibilities. This variable power supply device goes beyond the conventional power supply source (which rarely exceed 24V output) gives the maximum 57V with 1.5A current. (more…)

Variable 4 A/25V Power Supply

Variable 4 A/25V Power Supply
All workshops or laboratories must have a power supply for general purpose that can supply voltages and currents. This time we get a adjustable power supply with output voltages between 1.2 and 25V the maximum current of 4A.  This is very useful for laboratory power supply or workshop power supply. (more…)

35V adjustable power supply 1.5 A

35V adjustable power supply 1.5 A
One of the most needed instruments in electronics lab is adjustable power supply, allowing you to feed each circuit is tested or constructed for the required voltage and current. The adjustable power supply circuit shown here is just a linear power supply, a bridge rectifier and filter capacitor that it attach series voltage regulator. Furthermore, here was provided by a pair of fixed instruments that allow us to know at any time the voltage given in the output and

15 Ampere Adjustable Power Supply

15 Ampere Adjustable Power Supply
This adjustable power supply circuit provides an output voltage source which can be adjusted between 1.5 and 15 volts and give 15 amps current. As is shown in the wiring diagram the 15 A adjustable power supply provides similar amount of current through the parallel work of four power transistors, which must be mounted on a good heatsink. The voltage adjustment is performed in integrated LM317, which also must be dissipated mechanically. (more…)