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.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.Connects the power supply of the computer to the connector for 20 contacts. I dropped it from the old motherboard.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.You can turn on the power supply with any switch. I have a switch from the old TV set.On the front panel, drill holes for the wafer switch. Diameter is 8 mm.
SchematicThe 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.
Making the switchThe 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 test switchesConnect 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.
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