We found this circuit in a Popular Electronics of the 90s. The circuit can be easily mounted today, as the components are common. The SCR can be the TIC106.
This circuit is from a Popular Electronics from the 90's. It can be implemented with equivalent...
This circuit takes advantage of the temperature variation of the component with the air flow that...
This circuit generates sinusoidal and cosine signals of 2 kHz given basically by the values of C1...