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| 型號： | 90-LG-N971 |
| 廠商： | ELMA ELECTRONIC INC |
| 元件分類： | LED |
| 英文描述： | SINGLE COLOR LED, GREEN, 2 mm |
| 封裝： | SMD, 2 PIN |
| 文件頁數(shù)： | 12/12頁 |
| 文件大?。?/td> | 600K |
| 代理商： | 90-LG-N971 |
Elma Electronic Inc. | Phone: 510.656.3400 | Web: www.elma.com | Email: sales@elma.com
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Elma Electronic Inc. | Phone: 510.656.3400 | Web: www.elma.com | Email: sales@elma.com
The current range is set via a 10-step rotary switch. Switching on and off takes place via a slide switch. Battery low indication takes place via a red LED. A
socket for the optional plug-in power supply is provided on one of the sides. An additional service compartment for battery replacement is provided on the
rear. Function testing of the SMD LED takes place via the drop shaft of the housing top part. Comparative function testing (series connection of two LEDs) or
individually wired LEDs takes place via appropriate slots. The connection of optional test plugs for inline testing in the board is also possible via a slot.
General operating procedure
Select current range via the 10-step rotary switch and set the on/off switch to ON. The drop shafts are each marked with the numbers 1-7 for
the respective LED types (see supplied operating instructions). The LEDs can be inserted with a standard tweezer or manually depending
on the size. Polarity testing takes place automatically. A change in color when using duo LEDs or similar takes place semi-automatically and
depends on the shaft or respective LED variant (see operating instructions). The last shaft is reserved for a 3-color LED, which can be switched
cyclic via the contacts of the optional test plug via the further free three cathode contact pads.
Options
Optional test plugs can be ordered as required. These serve for the extended use of the LED Tester for other applica-
tions, enabling, e.g. the inline testing of LEDs already soldered in the board and switching of the three colors of the spe-
cial LED in shaft 7. Other test objects can also be contacted via the test plug; this enables the testing of all other LED forms
that cannot be observed at present in the test shafts of the LED Tester or could not yet be taken into account in future
developments.
Power supply
The LED Tester can be supplied either from a 9V battery or a plug-in power supply unit (9-12V). The tester ist protected against polarity
reversal, but not against overvoltage. When using plug-in power supply units, the input voltage level must be observed, also under no-load
conditions. The external power supply takes place with a 3.5mm hollow connector with automatic battery voltage cut-off.
Connector
Hollow connector 3.5mm
Polarity
Internal contact POSITIVE, external contact NEGATIVE
General description of the functional elements
LED Tester Information
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