This General Electric circuit, in a documentation from the 1960s, allows the use of high resistance resistive sensors with unijunction transistors in a relaxation oscillator.
The voltage gain of this amplifier is 10 times. This gain is given by the relationship of values...
We found this circuit in an American 1980s documentation, but it can be implemented with modern...
This ultra-simple test circuit is of great use in any electronics bench. The power is supplied by a...