Found in old documentation, this circuit can use modern equivalent components. The signal has good strength thanks to the use of a power transistor. The Q1 transistor is a unijunction of the time.
This circuit was obtained from a 1977 magazine, but can still be mounted using BC548 for TR1 and...
We found this circuit in an old documentation, but the components used offer no difficulty in obtaining...
July 2017 - Mouser Electronics is providing the TE Connectivity PTF Series Platinum family RTD...