Weighing Scales Based on Low-Power Strain-Gauge Circuits

Weighing scales (e.g., kitchen and bathroom scales) of a proposed type would incorporate sensory devices like the one described in "Low-Power, Microprocessor-Controlled Strain-Gauge Circuit" (NPO-19750), NASA Tech Briefs, Vol. 21, No. 1 (January 1997), page 45. Unlike other weighing scales based on strain gauges, these would not require electrochemical batteries or external power supplies; instead, the proposed scales could be powered adequately by solar batteries like those included on some pocket electronic calculators.