madokaaukawa
Newbie level 6
Hi all,
Basically, I designed the circuit which using a chemical sensor to detect harmful gas. The circuit is working fine. However, when I use walkie talkie to simulate RFI and test the circuit response, it has big problem. When the walkie talkie is toggled (on/off), the sensor output shoot up quite a bit (like increase 500mV) even worse, and drop down after 2-3 sec. There is no harmful gas actually. I tried many ways to reduce it. like relayout the circuit, copper pour with GND signal. It is not helpful.
Please help
Thanks in advance
Basically, I designed the circuit which using a chemical sensor to detect harmful gas. The circuit is working fine. However, when I use walkie talkie to simulate RFI and test the circuit response, it has big problem. When the walkie talkie is toggled (on/off), the sensor output shoot up quite a bit (like increase 500mV) even worse, and drop down after 2-3 sec. There is no harmful gas actually. I tried many ways to reduce it. like relayout the circuit, copper pour with GND signal. It is not helpful.
Please help
Thanks in advance