neazoi
Advanced Member level 6
Mains hum and static electricity detector
Hello,
I consider this little circuit to detect static electricity and mains hum.
I have replaced the transistors to BC549C to get a little bit lower noise and it works ok, but what if I need a little bit more sensitivity?
I was thinking of replacing the first transistor to a germanium one. The germanium transistors have lower base-ON voltage as far as I concern, so the led should light up more easily, yelding in more sensitivity.
What is your oppinion and what kind of germanium transistors to look for?
Hello,
I consider this little circuit to detect static electricity and mains hum.
I have replaced the transistors to BC549C to get a little bit lower noise and it works ok, but what if I need a little bit more sensitivity?
I was thinking of replacing the first transistor to a germanium one. The germanium transistors have lower base-ON voltage as far as I concern, so the led should light up more easily, yelding in more sensitivity.
What is your oppinion and what kind of germanium transistors to look for?