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Dual voltage power supply 12 volts – Circuit Schematic
Dual voltage power supply 12 volts
This circuit is a dual voltage regulated power supply, +12, -12, 0 volt. It uses the 7812 and 7912 regulators. You need a 18VCT, 1A transformer at input....
5000 Volts arc supply – Circuit Schematic
5000 Volts arc supply
A Very Low Current, High Voltage Spark, that is "Manually Triggered". Although its not easily Measured, the Peak Ouput voltage will be over 5,000 Volts. T1 is a...
250 Watt PC power Supply – Circuit Schematic
250 Watt PC power Supply
Up to 10 A continuous output current, or operation with 50 % ESD and 18 A peak current are possible without a fan if sufficient natural air flow is present and ...
Bench Power Supply circuit – Circuit Schematic
Bench Power Supply circuit
This power supply is able to deliver adjustable center-tapped DC from 0 to about 30 volts, as well as AC directly from the Variac and from the main transformer ...
0-15V 1A Variable power supply – Circuit Schematic
0-15V 1A Variable power supply
This circuit of power supply, are very simple in the manufacture, the finding of his materials , is very easy and cost, small. The output voltage is stabilised ...
Auto Fuse for power supply – Circuit Schematic
Auto Fuse for power supply
The power supply, with electronic stabilisation - mainly those of laboratories - it should they are protected from ??over current?? that emanates from short-cir...
60 Watt switching Power supply – Circuit Schematic
60 Watt switching Power supply
This paper gives a practical example of the design of an off-line switching power supply. Factors governing the choice of a discontinuous flyback topolog...
CRT and Power Supply for Oscilloscope – Circuit Schematic
CRT and Power Supply for Oscilloscope
The high voltage section of the CRT is unchanged from the original vacuum tube oscilloscope used as the basis of this design. The CRT requires shielding from th...
5V transformerless Power Supply – Circuit Schematic
5V transformerless Power Supply
I use this power supply for applications that doesn't use too mucho power. It can provide power to circuit that uses less than 100mA without any problem. The di...
5-12V DC regulated Power Supply – Circuit Schematic
5-12V DC regulated Power Supply
I didn't realize till the other day that I have never shown a circuit for a standard power supply. Shown below is a supply that will use any of the LM78XX serie...
12 Volt Power Supplies – Circuit Schematic
12 Volt Power Supplies
4 simple 12Vdc power supply circuits with output voltages around 12V. First power supply circuit is built with BD139, one zener diode and a few passive componen...
1,5-15V 500mA Power Supply – Circuit Schematic
1,5-15V 500mA Power Supply
This simple variable power supply circuit has a low production cost and delivers an output voltage between 1,5 V and 15 V with a 500 mA maximum current. Its sta...
0-50V 1A power supply with CA3086 – Circuit Schematic
0-50V 1A power supply with CA3086
This power supply circuit is highly stabilized that its output voltage will drop only 0.005% even though the load changes from 0 to 100%. Another excellent capa...
Symmetrical power supply 3-20V – Circuit Schematic
Symmetrical power supply 3-20V
The compact 5 pin L165 IC general a stabilized symmetrical power supply from a single asymmetrical power supply. The output voltage is however, half of the inpu...
Adjustable Auto transformer – Circuit Schematic
Adjustable Auto transformer
An isolation transformer and a variable auto transformer, very much like a Variac. Fuse 1 protects against gross overload. Lamp 1, across the Fuse 1, is a red i...
Power Supply with Adjustable Current and Voltage – Circuit Schematic
Power Supply with Adjustable Current and Voltage
The LM317 is capable of providing extremely good load regulation, but a few precautions are needed to obtain maximum performance. For best performance, the p...
1.2 - 15V/3A variable and regulated PS – Circuit Schematic
1.2 - 15V/3A variable and regulated PS
This kit provides a variable output power supply ranging from 1.2 to 15 V @ 3 A. It uses Low Dropout Positive Regulator LM1084 in TO220 package for delivering ...
Dual Voltage 12V Power Supply – Circuit Schematic
Dual Voltage 12V Power Supply
The following circuit Diagram of (DUAL VOLTAGE POWER SUPPLY ) can be used for Misc.. application. It requires a few components to built. The most important comp...
13.8V/40A Stabilized high Power Supply – Circuit Schematic
13.8V/40A Stabilized high Power Supply
This power supply was designed for ham-radio use and has been in operation for over 10 years. Its design is very simple and practically immune to RF. It is asse...
Power Supply for TTL – Circuit Schematic
Power Supply for TTL
In the circuit shown below, if the voltage at the output terminals rises above 6.2V, zener conducts charging capacitor C4. This voltage will fire the silicon-co...