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Teardown of a Keithley 230 Programmable Four-Quadrant Voltage Source

October 25, 2019October 25, 2019 kwong5 Comments on Teardown of a Keithley 230 Programmable Four-Quadrant Voltage Source

The latest addition to my lab equipment is a Keithley 230 programmable voltage source which can output up to ±100V. […]

Electronics, Teardowns AD544, GPIB, HP-IB, IEEE-488, Keithley 196, Keithley 230, MJ15011, MJ15012, Teardown, TMS9114A, Voltage Source

Teardown of an Extech 380460 Milliohm Meter

December 3, 2017December 3, 2017 kwong2 Comments on Teardown of an Extech 380460 Milliohm Meter

In this blog post, let’s take a look at what’s inside an Extech 380460 miliohm meter.

Electronics, Teardowns 4 Wire Measurement, AME7106CPL, Extech, Extech 380460, Keithley 196, Kelvin Sensing, LM385, Milliohm, Milliohm Meter, OP07, uA741

When to Use An Electrometer?

March 8, 2015 kwongLeave a Comment on When to Use An Electrometer?

Electrometer is a piece of highly specialized electronic test equipment. Most of us would naturally associate it with low-level measurements […]

Electronics Electrometer, Keithley 196, Keithley 614, Measurement, Nanoammeter, Picoammeter

Keithley 197 Teardown and Repair

June 1, 2014October 21, 2018 kwong11 Comments on Keithley 197 Teardown and Repair

A few days ago, I bought a Keithley 197 sold as “unknown working condition” on the cheap. The seller said […]

Electronics, Teardowns AD637, Keithley 196, Keithley 197, Teardown

Backup and Flash Firmware using Arduino

May 23, 2014 kwong2 Comments on Backup and Flash Firmware using Arduino

A while ago, I did a tear-down of a Keithley 196 bench multimeter. Towards the end of that post I […]

AVR/Arduino, Electronics 27128, 2764, Atmega328P, EPROM, Firmware, Keithley 196, Keithley 197

Keithley 196 Firmware/Calibration Data Backup

January 28, 2013 kwong5 Comments on Keithley 196 Firmware/Calibration Data Backup

I bought a used Keithley 196 bench multimeter a few weeks ago. This is a 6 ½ digit 3,030,000 counts […]

AVR/Arduino, Electronics 27128, Arduino, EEPROM, EPROM, Keithley 196, KM2816A, MCP23S17

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