This little circuit is invaluable for quick go/no-go testing of just about any remote control transmitting infra-red (IR) light. The tester is battery-powered, built from just a handful of commonly ...

This circuit is the result of my research. I have used a photodiode, SFH2030 as an infra red sensor. A MOSFET opamp, CA3140 is used in the differential mode to amplify the pulses of current from the ...

Regular quality control testing of medical radiological equipment has been shown to improve clinical image quality and reduce patient radiation exposure. Unfortunately is has been largely overlooked ...