Review on KNACRO Solid State Relay Module 5V 2A 1 Channel High-Level Trigger for Arduino Uno Duemilanove MEGA2560 MEGA1280 ARM DSP PIC (DC 5V, 1-Channel) by John Campos

Name: KNACRO Solid State Relay Module 5V 2A 1 Channel High-Level Trigger for Arduino Uno Duemilanove MEGA2560 MEGA1280 ARM DSP PIC (DC 5V, 1-Channel)
Item: KNACRO Solid State Relay Module 5V 2A 1 Channel High-Level Trigger for Arduino Uno Duemilanove MEGA2560 MEGA1280 ARM DSP PIC (DC 5V, 1-Channel)
Rating: 1

September 18, 2022

Resistance too high.

I bought this relay to replace a mechanical relay as the bounce prevents the digital circuitry from meeting monotonous turn-on specifications. I'm just switching 5V into a digital circuit of about 500mA, but the relay resistance is too high and the output voltage is only 4.2V. I even applied 5V directly to the inputs. Still not good. The data sheet of the digital relay itself states a maximum output voltage drop of 1.6V, I can only tolerate 0.1V.

Pros

Decent performance

Cons

Miscellaneous Miscellaneous

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