FIELD: machine building.
SUBSTANCE: invention relates to machine building and can be used for measurement of temperature differences, for example, small temperature differences at two points of surface, with high sensitivity. Differential thermal sensor consists of power supply 4, two constant 5 and one variable balancing resistor 2, two heat-sensitive transistors 1. Novelty is that both transistors 1 with their bases are connected to variable balancing resistor 2, middle output of which is connected to limiting resistor 3, which together with collectors of transistors 1 is connected to one output of power supply 4, and its other output is connected to emitter resistors 5, other outputs of which are connected to diagonal of bridge – by output 6 of all differential thermal sensor.
EFFECT: broader functional capabilities.
1 cl, 1 dwg
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