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Your cart is empty. It can realize low level driving high level and realize voltage conversion using this module, the IO voltage of the MCU can be graded to achieve isolated drive between different voltage levels
Through the selection of the jumper cap of each channel, it is possible to achieve separate control whether it is shared with the input.The jumper cap is shorted so that the negative terminal of the output terminal is connected to the negative pole of the powersupply(Gin the figure)
Each channel has an independent power indicator， which can be directly driven by the IO port of the MCU.The input terminal is5V high, and the 3-5MA current can be driven
APPLICATION：
MCU output level To drive the motor When the inductive device such as the motor is isolated, anti-interference protects the circuit of the MCU
The output level of the single-chip microcomputer is low， and the driving voltage of the driven module is high
For level matching, for example, some PLC input should have 24V voltage and can be converted by this module
For the inverter, the input signal can be inverted
Used for high voltage detection, for example：the output signal level of a sensor is12V
The voltage of the single chipis5V.This module can be used for isolation detection
Package include:
2 x PC817 8 channel optocoupler isolation board
NOTE:
The input port is shared with GND
The output ports are independent of each other
It is optocoupler output.V and G will be connected after input valid signa in input port
David Kaleta
Reviewed in the United States on February 12, 2023
A very compact PC817 PCB design. The jumper allows for isolation between in/out. See schematic I came up with for it.
David Kaleta
Reviewed in the United States on February 12, 2023
A very compact PC817 PCB design. The jumper allows for isolation between in/out. See schematic I came up with for it.
Jay D
Reviewed in the United States on December 13, 2023
I often need to isolate circuits with different voltages. My last project interfaced 5VDC to 12VDC. These boards did the trick very well. I like the individual boards (instead of a single board with many optoisolators) , because I don't want to connect the Grounds of the inputs or outputs. The boards do contain jumpers for ground, but don't eliminate all the common grounding. Having multiple 2 channel boards allows me to do this fairly easily.The drawback is the multiple boards & wires laying on the desktop - but that's a minor issue. If you incorporate these boards into a final project, they take quite a bit of real estate. The optoisolators themselves are typical 817C IC's paired with a few 3K current limiting resistors and an LED that can be had for less that $2.00 total. Nevertheless, this card makes it easy to prototype, and construct simple isolation circuits.
Jay D
Reviewed in the United States on December 13, 2023
I often need to isolate circuits with different voltages. My last project interfaced 5VDC to 12VDC. These boards did the trick very well. I like the individual boards (instead of a single board with many optoisolators) , because I don't want to connect the Grounds of the inputs or outputs. The boards do contain jumpers for ground, but don't eliminate all the common grounding. Having multiple 2 channel boards allows me to do this fairly easily.The drawback is the multiple boards & wires laying on the desktop - but that's a minor issue. If you incorporate these boards into a final project, they take quite a bit of real estate. The optoisolators themselves are typical 817C IC's paired with a few 3K current limiting resistors and an LED that can be had for less that $2.00 total. Nevertheless, this card makes it easy to prototype, and construct simple isolation circuits.
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