Found in a 1991 Hobbyst Handbook, this circuit monitors both battery and alternator voltage. The set point is obtained at P1.
We found this circuit in a documentation for 1977 American radio amateurs. The LM336 integrated circuit...
The frequency of this oscillator depends on the coil and the 10 nF capacitor. The circuit is from...
This circuit can work with the previous one generating signals, that can be decoded by it. The...