So I have a remote switch to control a light bulb. The transmitter circuit basically consists of:
-transmitter IC ( RF 433M Hz)
-DC power supply
-Switch ( turn on/off by applying voltage, transistor maybe, or thyristor? )
-Mechanical Touch sensor that generates a pulse of 1.5-2.5 V within 0.5 s per press. The current generated here is almost negligible, around 20 nA.
(See the schematic)
All I need to do is to turn on the switch (transistor) when I press the mechanical sensor that is connected to the gate of the transistor to allow the DC power supply feed the "Data pin" and then transmit it through antenna.
The problem is, I don't know what type of transistor ( or any other electronic device) that can be used to detect such a small voltage/current pulse and turn ON.
Any suggestion? If you have totally different ideas to tranmist the data with that sensitive mechanical touch sensor you're most welcome to share with me and I'll appreciate it :)