Here is a Millivolt Source i built for Calibration in the early days. It uses only CMOS Digital and Mixed Chips from Intersil and CD40xx Series. Later i tried a unit with 8748 part of the code in my uC section. This is with Ramp-up and Ramp-down using only twoRead More
Here are some Test and measurement notes. These ideas come from practical experience. But the jots are not in any order but are quite important. Scope Notes If the waveform on the scope droops then you may need to use a 10X attenuating probe or mode. this attenuator is atRead More
Test Tools are needed for Troubleshooting and Repairing Electronic Gadgets, Equipment, Electrical Panels and Machines. Precision Instruments are required for calibration of field and machine control electronics. These are also required by the R&D engineer for design and development of new products and trying out new concepts. Test and MeasurementRead More
The usefulness of an oscilloscope is not limited to the world of electronics. With the proper transducer, an oscilloscope can measure all kinds of phenomena. Type 465 Tektronix oscilloscope. This was a popular analog oscilloscope, portable, and is a representative example. – XYZs of Oscilloscopes Introduction to Oscilloscope – TheRead More
Multi-Instrument Digital Assistant – PIC16F84A – “It contains four instruments in one unit: logic probe, single channel logic state analyzer, frequency counter and serial code receiver.” The Engineer’s Assistant – Erik Grindheim “This compact instrument is intended to be a digital laboratory tool for hardware and, in some cases, softwareRead More
This is a Milli-Volt and Milli-Amp Source for Calibration of Temperature Measurement and Control Instruments using Thermocouples. There is also a Passive Variable Resistance Source for Simulating a PT-100 RTD Sensor. Current Source mA for calibration This calibrator was a simple solution i built. This instrument itself was calibrated byRead More
ICL7107 DPM and DVM chip from Intersil The Intersil ICL7106 and ICL7107 are high performance, low power, 31/2 digit A/D converters. Included are seven segment decoders, display drivers, a reference, and a clock. The ICL7106 is designed to interface with a liquid crystal display (LCD) and includes a multiplexed backplaneRead More
For the past 30 years, National Instruments has been a technology pioneer and leader in virtual instrumentation – a revolutionary concept that has changed the way engineers and scientists in industry, government, and academia approach measurement and automation. LabVIEW, Data Acquisition, Modular Instruments, PXI, Programmable Automation Controllers. Here is aRead More