This circuit was found in a documentation of the 80s, having didactic purpose. For R1 values between 10k to 1M can be used. Transistors are general purpose types.
June 2016 - Mouser is providing the new chips of Murata noise filters to products that employ this...
In the figure we have a regulator circuit for output voltages of 0.5 to 10 V with currents up to...
This is a bridge for the measurement of low value resistances and high values too. The circuit...