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Tenma Model 72-1082 ATX Power Supply Tester For Sale

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Tenma Model 72-1082 ATX Power Supply Tester:
$36.00

The Tenma Model 72-1082 ATX PowerSupply Tester is designed to provide fast convenient

connector to this tester willprovide immediate visual indication of operation of the power supply.

Typically, ATX style powersupplies are switched on/off from the motherboard. The Tenma ATX

Power Supply Tester simulates thiscommand by placing a proper current load across Pin4 and

Pin5 of the 20-pin ATX connector.When its rocker switch is placed in the ON position, the power

supplies cooling fan will engage,and the LED indicator, located in the tester rocker switch, will

light. This indicates that thepower supply is functioning. In most cases, this level of pass/fail

testing is all that is required.

In some circumstances where thesupply is operational yet erratic behavior exists, it may be

desirable to verify correctvoltage of the +3.3V, +5V, +12V (and –5V where applicable), outputs.

Using a separate voltmeter (notincluded) the voltage of each output may be measured.

• Disconnect the computer powersupply from the AC power source

• Disconnect all IDE and otherdevices that are connected to the computer power supply

• Disconnect the large 20-pin ATXconnector from the motherboard

• Set the rocker switch on thetester to the OFF position

• Connect the 20-pin ATXconnector, from the power supply, to the tester

• Connect the computer powersupply to an AC power source

• Set the rocker switch on thistester to the ON position

• If the LED on the rocker switchlights, the power supply is functioning

Testing Output Voltage

Test pins are located at each ofthe following locations on the 20-Pin ATX connector for voltage

such as the Tenma Model 72-7770(available separately). To measure voltage, place the (–) lead

in connector Pin3. Then place the(+) lead in the pins as shown below to measure each output

Pin Voltage

2 +3.3VDC

3 0V

10 +12.0VDC

18 – 5.0VDC (not used on all ATXstyle supplies)

20 + 5.0VDC

Note:

If an analog meter is used tomeasure the –5VDC on Pin18, the test leads must be reversed.

Place the (–) lead in Pin18, andthe (+) lead in Pin3. In this arrangement, the proper voltage will

measure +5VDC.

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Tenma Model 72-1082 ATX Power Supply Tester

$36.00

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TENMA PROGRAMMABLE DC POWER SUPPLY-Model 72-8795

$550.00

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TENMA LABORATORY DC POWER SUPPLY MODEL 72-2005 -

$119.00

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