Temperature stabilized multivibrator bridge
D M Bayich · Journal of Physics E Scientific Instruments · 1972
Two identical, astable multivibrators synchronized together form a temperature stabilized, fairly linear bridge, which may be used for balanced/unbalanced measurement of the R or C parameters of resistors, capacitors or transducers of nonelectric quantities. Theoretical and experimental analyses are given. The device may also serve as a new type of DC electronic potentiometer. At higher frequencies sensitive measurement may be carried out by beating fundamentals or higher harmonics, which may make it also useful as a warning device. It can be versatile: here it is used for temperature measurement by a thermocouple.