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請教圖中的多轉VR是調教什麼的?

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kk_ho 發表於 2010-9-24 00:00:18 | 顯示全部樓層
Please refer to the datasheet page 2

1. Recommended Operating Conditions
➀Add a variable resistor (VR) between diode terminals to adjust the idling current. The
resistor having 0 to 200Ω is to be used.
➁Adjust the forward current flowing over the diodes at 2.5mA.
➂Adjust the idling current at 40mA with the external variable resistor.

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