Voltage switch between computer power supply pins

When you repair a computer power supply unit or perform a modification, you need to constantly measure the voltage. It is also sometimes necessary to measure the resistance of the output voltages. I decided to assemble the adapter between the power supply and the multimeter. With such a device, hands will always be free and work will be faster. Also, this unit can be used to power low-power devices. The current is limited by the operating current of the switch.

Schematic

The circuit of the device is simple and it can not be assembled. The input voltage comes to the 20-pin connector, and the output voltage is removed from the terminals. All voltages are switched by a jack switch. There is an indication of the power supply of the computer. The indication LED is powered by 5 Volt duty.The power supply of the computer is started by a switch.
Voltage switch between the outputs of the computer power supply

Making the switch

The device is mounted in any suitable case I will do the case myself. I will make it out of PVC plastic. Plastic scored from advertisers, trimming which are discarded.
The voltage switch between the terminals of the computer power supply
Cut out the necessary parts of plastic and glue with super glue. It turns out such a letter "O". You also need to cut the front and back panels.
Voltage switch between the outputs of the computer's power supply
Connects the power supply of the computer to the connector for 20 contacts. I dropped it from the old motherboard.
Voltage switch between the terminals of the computer power supply
Switching the output voltage will be flashing switch PG-3. If it is possible to take the switch to 6 positions, then it's wonderful. I have 11 positions, but that is, that is.There was also a pen on the switch.
Voltage switch between the outputs of the computer's power supply
You can turn on the power supply with any switch. I have a switch from the old TV set.
Voltage switch between the terminals of the computer power supply On the front panel, drill holes for the wafer switch. Diameter is 8 mm.
Voltage switch between the terminals of the computer power supply
The connection indicator will be an LED. To limit the current to the LED, you need a resistor, you need 150 Ohms.
Switch the voltage between the outputs of the computer power supply
Drill the hole for the LED. Diameter 4.5 mm, under the LED 5 mm. So it will be more densely installed.
Voltage switch between computer power supply pins
Cut a hole for the connector in the side wall.
Voltage switch between the outputs of the computer power supply
Drill a hole for the switch from the top of the case.The diameter of 12 mm. The voltage switch between the terminals of the computer power supply At this stage, I did not decide on the terminals for connecting the multimeter. Therefore, painted the body in black color, drill holes later. After the paint has dried, still drilled one hole. The photo shows.
Voltage switch between the terminals of the computer power supply
I will use plugs from the SR-A military connector as removable terminals. Immediately soldered to them wires and insulated. Voltage switch between the pins of the computer power supply The front panel will be glued with super glue, and the back panel will be screwed with small screws. To screw the screws, I glue the substrates of the same plastic as the case. Adhesive for super glue. I attach the front panel.
The voltage switch between the outputs of the computer's power supply
I still lay off the case andI pass to the scheme. Everything is soldered according to the sketched scheme. It is convenient to connect the connector of the power supply and unplug the colors of the wires accordingly. Soldering places must be insulated.
Voltage switch between the outputs of the computer power supply
I uncoil the switch according to the scheme. Everything is simple and accessible.
Voltage switch between the computer power supply pins
Soldered the LED and switch. Now you can install everything in the case.
Switch the voltage between the pins of the computer power supply
Plug the glue on the super glue with soda. Excellent glue is obtained, almost like epoxy.
The voltage switch between the pins of the computer power supply
Screw the back wall and get a great design.
Switch the voltage between the terminals of the computer's power supply

The test switches

Connect the multimeter. Turn on the switch.We control the output voltage of the computer power supply. During the build process, I redid the sequence. So it seemed to me more convenient. The duty mode is duplicated. The LED lights up and the last position shows 5 volts.

Related News


Simple and elegant dress with knitting needles
Men's gift card box
How to choose a car for yourself and for your wife
Plastic Fir Tree
Decoupage Tea House