We found this circuit in an article in Electronics Now magazine from November 1997. The circuit uses two transistors to measure the temperature difference between them when one receives the wind.
Found in a 1980s documentation, this amplifier uses an integrated circuit of the era. The RLC...
This circuit produces a voltage drop in the first pulse, turning off the relay. On the second...
Operational amplifiers or comparators like those in the LM139 series can be used on this circuit,...