We found this circuit in a 70s Electronic Design documentation. The circuit uses general-purpose transistors from the time. Linearity is better than 0.25%.
This circuit is the receiver for the transmitter from the previous project. We also found it in...
This is a small transistor receiver for the medium wave range made in Japan in the 1960s. The...
This circuit was obtained in a 1977 technical documentation. The sensor is a thermistor from 10k...