Millivolt Source with Digital Potentiometer
2021-08-23
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 aRead More
Instrumentation and Automation – 01
2021-03-05
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 waveformRead More
Test Measurement and Test jigs
2021-03-04
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 alsoRead More
Oscilloscopes in Test Measurement
2021-03-04
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. ThisRead More
Multi-Instrument Digital Assistant – PIC16F84A
2020-09-15
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 –Read More
Temperature Calibrator Milli Volt Source
2020-09-14
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 RTDRead More
ICL7107 DPM and DVM chip from Intersil
2019-09-03
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,Read More
DC Regulated Power Supply
2018-11-16
This is a Regulated 0-30 V DC Power Supply manufactured by me in small numbers, 0-30V 5A and 5V -5A. It had a Switching Preregulator. This keeps the Vce acrossRead More