Guide ANO007 | Understanding Phototransistor Optocouplers
The ratio between the phototransistor collector current (IC) and the IR-LED current (IF) represents the main optocoupler parameter: the current-transfer-ratio (CTR).
Guide Optocoupler Circuit Design and Detailed Analysis
Collector current is the current that will flow to the collector of the transistor side of the optocoupler. On the other hand, the forward current is the current that flow to the diode side of the optocoupler.
Guide HCNR200 and HCNR201: High-Linearity Analog Optocouplers
20 mA analog current-loop transmitter and receiver circuits using the HCNR200/201 optocoupler. In these circuits, the loop side of the circuit is powered entirely by the loop current, eliminating the need
Guide Optocoupler Tutorial for Beginners
In this case, the light from the LED triggers a photo-triac, which can then conduct current in both directions (AC current). This optocoupler is often used in applications where an AC load
Guide Optocoupler Circuits, Working, Characteristics, Interfacing
For general use optocouplers, a current of approximately 5 to 10 mA is suitable. In this case, the value of the resistance RE is calculated from the level of the voltage applied to the
Guide How to know the minimum LED current of an optocoupler?
Since an MCU will be driving the LEDs, I would like very little current to be drawn on the GPIO; how do I know what is the smallest current I can drive the LED of the optocoupler?
Guide Guidelines for reading an optocoupler datasheet
It consists of collector-emitter voltage (VCE) and collector current (IC) as a function of the base current (IBASE). With optocouplers, the emitter forward current (IF) is approximately equivalent to the
Guide Make sure your optocoupler is properly biased
Optocouplers contain both a light-emitting diode (LED) and a photo detector. Current flowing through the LED results in a proportional current flowing in the photo detector.
Guide Using Opto Couplers
Typical optocouplers can handle input and output currents from a few microamps to tens of milliamps. There are many optocouplers on the market and to find the most appropriate for a particular purpose,
Guide Explanation of Photocoupler / Optocoupler Specifications
The allowable maximum collector current that can flow through a phototransistor within the allowable power dissipation (P C) range when the light-receiving phototransistor is conducting current at an