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It can be used either as a voltage mode or current mode controller
To improve the range of the receiver wire/antenna can be soldered to the antenna port of the module
extending the battery's shelf life
Unlike standard 5mm LEDs
6k ohm Color Code Orange
A7840 IC-Isolation Amplifier SOP-8 Package 546 Oval Red LED(300-400mcd) It can be used eitherThe Isolation Amplifier IC A7840 is intended for use in electronic motor drives to sense current. The A7840 detects the analogue voltage drop that results from motor currents flowing through an external resistor in a typical design. On the other side of the optical isolation barrier made by the A7840, a differential output voltage is produced. An op amp can be used to transform this differential output voltage, which is proportional to the motor
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