Significance of Current Loop 4 to 20 mA Standard
Subject: delabs comments – Tell Me. message: why 4-20mA standard. why not 2-22mA or any thing else Mail from MU they knew you would come up with a question like this. so see this...
Build a DMM – LM3914 Analog display
This a part of a complete Benchtop DMM that you can build to learn the internals of a Digital MultiMeter. This is oriented towards learning the measurement aspects and the protection of input circuits....
AC conversion and Continuity – DMM
U1A LF353 opamp turns on a buzzer when the voltage at Test + falls very low indicating a short between Test + and Test – or a resistor less than 5 ohms. The R9-R14...
Differential Amplifier – Op-Amp Circuits
This amplifies the difference between two inputs Vp and Vn the low impedance of this configuration is a drawback, but can be used in analog computing. Optimum VCC VDD can be +12/-12. AC signals...
