Category: Galvanic isolation modules
Galvanic Isolation Modules – Protecting Electronic Circuits from Interference and Overvoltage
Galvanic isolation modules are essential components in electronic projects where it's necessary to electrically separate two parts of a circuit while still transmitting a control signal. Galvanic isolation helps prevent ground loops, eliminates interference, and protects components from potential differences that could damage circuits. The modules available at Kamami are complete, ready-to-use boards with proper protection, designed for easy installation and integration with other systems. They are widely used in hobbyist, educational, and more advanced prototype applications.
There are 9 products.
A module with 4 PC817 optocouplers. Allows you to add galvanic separation in the form of opto-isolation between electrical circuits
A module with two PC817 optocouplers. Allows you to add galvanic separation in the form of opto-isolation between electrical circuits
Module with a TL281 4-channel optocoupler with a maximum collector-emitter voltage of 80 V
2-channel digital isolator based on the Texas Instruments ISO6521, enabling galvanically isolated digital signal transmission at data rates up to 50 Mbps. The module provides one communication channel in each direction (1/1), offers functional isolation up to 450 VRMS, independent power supplies for both sides of the circuit, and can also operate as a logic level translator. Pololu 5748
4-channel digital isolator based on the Texas Instruments ISO6540F, providing galvanically isolated digital signal transmission at speeds up to 50 Mbps. The module features four forward channels (4/0), functional isolation up to 400 VRMS, independent power supplies for both sides, and can also be used as a logic level shifter. Outputs default to a low state (Default Low) in the event of input signal or power loss. Pololu 5741
2-channel digital isolator based on the Texas Instruments ISO6520, enabling galvanically isolated digital signal transmission at speeds of up to 50 Mbps. The module features two forward channels (2/0), provides functional isolation up to 450 VRMS, independent power supplies for both sides of the circuit, and can also operate as a logic level shifter. Pololu 5746
4-channel digital isolator based on the Texas Instruments ISO6540, providing galvanically isolated digital signal transmission at speeds up to 50 Mbps. The module features four forward channels (4/0), functional isolation up to 400 VRMS, independent power supplies for both sides, and can also be used as a logic level shifter. Pololu 5740
A module with 8 PC817 optocouplers. Allows you to add galvanic separation in the form of opto-isolation between electrical circuits
No product available!
A module that provides a regulated, galvanically isolated power supply. It allows easy changing of the output voltage from 5 V to 3.3 V using the voltage selection pin (VSEL). Galvanic isolation between input and output effectively prevents problems related to ground loops and ground currents, ensuring stability and protection of the system. Pololu 5384
No product available!
Galvanic Separator – Reliable Isolation Between Control and Output Circuits
A typical galvanic separator used in electronic systems consists of optoelectronic components that transmit signals using light, ensuring full isolation between input and output. These solutions are ideal for communication between microcontrollers and actuators such as motors, relays, or high-power devices. Galvanic isolation modules can also serve as intermediate layers in UART, SPI, or I2C communication setups where voltage separation or noise reduction is needed to maintain data integrity.
Optocoupler – The Core of Galvanic Isolation Systems
The most commonly used component in isolation modules is the optocoupler, also known as an optoisolator. It works by converting an electrical signal into light, which is then received by a photodetector on the output side. Kamami offers modules that use well-known optocouplers, including the popular PC817 optocoupler—valued for its simplicity, availability, and solid isolation performance. Modules built around this component are suitable for signal filtering, protecting microcontroller inputs, and isolating signal lines in complex circuits.
Optocouplers in Educational and DIY Arduino Projects
Due to their low cost and ease of use, optocouplers are a common choice in Arduino-based projects, especially among beginners and hobbyists developing their own control devices. These modules are used to build interfaces that protect microcontroller I/Os from unpredictable voltage spikes, often occurring when working with external hardware. With straightforward integration and clear functionality, optocouplers in Arduino setups enable practical applications in robotics, home automation, and lighting control.
Galvanic Isolation Modules at Kamami – Reliable Separation and Uninterrupted Signal Transmission
At Kamami, we offer a broad selection of galvanic isolation modules built with proven optoelectronic components, such as the PC817 optocoupler and other popular optoisolators. These modules come in ready-to-use board formats, ideal for prototypes, test circuits, and fully assembled electronic solutions. With durable design, compatibility with standard logic voltage levels, and a compact form factor, Kamami’s isolation modules are the perfect choice for anyone designing circuits that require safe separation between logic and power sections.