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Kerry D. Wong

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PLA Dielectric Strength Measurement

January 6, 2019January 6, 2019 kwong

In my previous post, I designed and 3D printed a high voltage connector for my Bertan 225-20R high voltage power […]

Electronics Bertan 225-20R, Breakdown Voltage, Dielectric Breakdown, Dielectric Strength, High Voltage Connector, PLA

3D Print an HV Connector

December 22, 2018December 22, 2018 kwong

In one of my previous posts, I did a teardown of a Bertan 225-20R high voltage power supply, which is […]

Electronics, Miscellaneous 3D Print, 3D Printer, Bertan 225, Creality Ender 3, Cura, G-code, High Voltage, High Voltage Connector, Tinkercad

Array 3711A Electronic Load Testing – Tips and Pitfalls

November 18, 2018December 22, 2018 kwong

In my previous post, I did a teardown of my Array 3711A DC electronic load. And as I promised, this […]

Electronics Agilent 66312A, Array 3711A, DC Load, Dummy Load, Electronic Load, HP 6113A, Programmable Load, SMU, Source Measure Unit, Two Quadrant

Teardown of an Array 3711A 300W DC Electronic Load

November 5, 2018 kwong

I have made many electronic loads in the past. For instance this simple harddrive cooler housed small dummy load, this […]

Electronics, Teardowns 93LC66, Array 3711A, DC Load, Dummy Load, EEPROM, Electronic Load, IRF3205, IRFP460, MSP430F135, OP07, Programmable Load

Agilent U1731B LCR Meter Teardown

October 28, 2018 kwong

A couple of weeks ago, I got myself an Agilent U1731B LCR meter on eBay. These handheld LCR meters are […]

Electronics, Teardowns Agilent, Dissipation Factor, ESR, Guarding, HT7600, LCR Meter, Parallel, Quality Factor, Series, Teardown, TLC7135C, U1731B

Interfacing a Noritake VFD Module with Arduino

October 1, 2018 kwong

I recently bought a Noritake-itron VFD module off eBay. Noritake-itron specializes in making vacuum fluorescent displays for many OEMs. As […]

AVR/Arduino, Electronics Arduino, Arduino Nano, CU20026-TW200A, CU20026SCPB-T26A, itron, MCU, Noritake, Vacuum Fluorescent Display, VFD

Inside an Agilent 66312A Two-Quadrant Power Supply

September 17, 2018 kwong

Typically, a lab power supply can only operate within a single quadrant. Take a positive voltage power supply for example, […]

Electronics AD586, AD677, AD7524, Agilent 6612C, Agilent 66312A, Down Programmer, DSP, Dynamic Measurement DC Source, Electronic Load, FPGA, HP, Null Modem, OP27, Power Supply, Programmable, SMU, Source Measure Unit, TL16C552, TLC5620, Two Quadrant, VFD

Extreme Teardown of a Panasonic PT-L780U 3LCD Projector

September 9, 2018 kwong

Have you ever wondered what is inside of a 15 year old commercial color projector? Well we will find out […]

Electronics, Teardowns 3LCD, AD9888, CPLD, Dichroic, DSP, FPGA, Fresnel Lens, Panasonic, Prism, Projector, PT-L780U, Teardown

OOK/FSK Modulation Using PE42420 RF Switch

August 27, 2018August 27, 2018 kwong

I recently bought a few Peregrine Semiconductor‘s PE42420 RF Switch evaluation boards on eBay. The PE42420 is an absorptive SPDT […]

Electronics ASK, FSK, HP8566B, HP8642B, HP8671A, OOK, PE42420, Peregrine Semiconductor, RF Switch, SPDT, Wavetek 1045, Wavetek 395

Teardown of an MEDA PLM-100 AC Magnetometer

August 11, 2018 kwong

I did a teardown a while ago on a cheap eBay electromagnetic radiation detector, and if you recall the performance […]

Electronics, Teardowns AD636, burden voltage, Electromagnetic compatibility, EMC, fluxgate, Macintyre Electronic Design Associates, Magnetometer, Meda, Op Amp, Search Coil, TL032, Transimpedance Amplifier, True RMS

Inside a Datum 9300 Time Code Generator

July 30, 2018 kwong

IRIG time code generators (not to be confused with the ones used in video and film industry) are often used […]

Electronics, Teardowns BCD, IRIG Timecode, Manchester Code, SBS, Time Code, wire wrap

Controlling an HMC624LP4E RF Attenuator Using Arduino

July 15, 2018 kwong

I recently found a Hittite (acquired by Analog Devices in 2014) HMC624LP4E evaluation board gathering dust in my miscellaneous PCB […]

Electronics Analog Devices, Arduino, GaAs, Hittite, HMC624A-EP, HMC624LP4E, I2C, LCD, MMIC, SPI

Teardown of an MVMT Dual USB Port Wall Outlet Adapter

June 24, 2018 kwong

I bought a USB wall outlet adapter recently so that I can free up my wall outlets while charging my […]

Electronics Electronic Load, LA-2SA, MOV, MVMT, Teardown, USB Charger, USB Wall Outlet

Unusual Failure Mode of an APC Surge Protector

June 10, 2018 kwong

Recently I got hold of a dead APC SurgeArrest power strip that was about to be thrown out in my […]

Electronics APC, CPSC, Darlington, Fuse, MOV, MSPA13, NET7, PN2222A, Recall, Surge Protector, Teardown, Varistor

Keithley 775A Programmable Counter TCXO Repair

June 1, 2018 kwong

In my last post, I did a teardown of the Keithley 775A programmable counter/timer. And while feeding a 10 MHz […]

Electronics Frequency Counter, Keithley 775A, Repair, Rubidium Standard, TCXO, TCXO-26A, Timebase

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Tools & Libraries

  • MCP2210 Library
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Most Popular Posts

  • A Sensitive DIY Ultrasonic Range Sensor (286)
  • Building a Constant Current/Constant Power Electronic Load (240)
  • AVR LC Meter With Frequency Measurement (222)
  • AD7705/AD7706 Library Revisited (92)
  • A Digitally Controlled Dual Tracking Power Supply -- II (88)
  • Hacking DTM0660L Based Multimeters (77)
  • A Self-Balancing Robot – III (62)
  • Reverse Engineering the Syma S107G IR Protocol (56)
  • Dual Purpose Spot Welder With Pulse Duration Control (51)
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