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Teardown of an Extech 380460 Milliohm Meter

December 3, 2017December 3, 2017 kwong

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

Teardown of an ATVR-1000D AC Voltage Regulator

November 23, 2017 kwong

I bought a used RegVolt ATVR-1000D automatic AC voltage regulator (the model I got has long been discontinued, but you […]

Teardowns AC Voltage Regulator, ATVR-1000D, RegVolt, Servo, VARIAC

Reverse Engineering of BK Precision 1696 Switching Power Supply’s LCD Protocol

November 13, 2017 kwong

As mentioned in my previous post, besides the broken LCD there was also an issue with the power supply portion […]

Electronics 7 Segment, BK 1696, BK Precision, LCD, NJU6433F, Programmable Power Supply, Protocol, Reverse Engineering, SDP, SPI, Switching Power Supply

Teardown of a BK Precision 1696 Programmable Switching Power Supply

November 4, 2017November 5, 2017 kwong

I recently picked up a BK Precision 1696 programmable switching power supply off eBay. Unlike many of the vintage test […]

Electronics, Teardowns ADUC831BS, BK 1696, BK Precision, CD4052BC, LM324, MAX202CPE, MAX485, MC33262, NJU6433F, OP27G, OP491G, P781, PFC, Programmable Power Supply, RS-232, RS-485, Switching Power Supply, Teardown, TL494

Teardown of a Watts Up? Pro ES Power Meter

October 21, 2017 kwong

Power meters for measuring power consumption of consumer electronics have been around for at least a decade. The most popular […]

Electronics, Teardowns 24C512N, ADE7763, ADUM1201, FT232RL, Kill A Watt, P4400, PIC18F45J10, Power Meter, Watts Up

Diode Equation and Forward Current Measurement

October 14, 2017 kwong

We are all familiar with the I/V characteristics of a diode. The main characteristics of a typical diode is that […]

Electronics 1N4004, Electrometer, Keithley 614, Krohn-Hite, MV216A, Picoammeter

Modifying a Computer ATX Power Supply For Higher Output Voltage

October 7, 2017 kwong

To charge the 110Ah battery bank I built, I need a power supply that can provide at least 10A at […]

Electronics ATX, DTC, Hack, PSU, TL494, Voltage Supervisor

Teardown and Testing of an 800W PureSine Inverter

October 1, 2017October 2, 2017 kwong

The last ingredient for my backup power project is an inverter. Since the battery bank I built is a 12V […]

Electronics, Product Reviews, Teardowns ASIC, Autotransformer, Efficiency, EG8010, FGA40N65, IGBT, Inverter, IRF4368, KA7500, MUR860, PureSine, ReliableElectric, Teardown, Testing, VARIAC

Building a 12V 110Ah Battery Bank Using 80 32650 LiFePO4 Cells

September 22, 2017September 23, 2017 kwong

During the past couple of weeks I have been busy making a large battery bank using the eighty 32650 LiFePO4 […]

Electronics 32650, Battery Bank, Li-ion, LiFePO4

Modifying a 4S 100A LiFePO4 BMS Module

September 10, 2017September 20, 2017 kwong

For those who are following my YouTube channel, you would know that I am in the process of building a […]

Electronics Balancing, Battery Management System, BMS, HM2302A, HY2112, HY2212, LiFePO4, Lithium Ion, Lithium Iron Phosphate, Mod, RU7088R

Teardown and Experiments with a Doppler Microwave Transceiver

September 1, 2017 kwong

I got a couple of Microsemi’s C900502 10.525 GHz X-band Doppler radar motion sensors a while ago. This batch was […]

Electronics, Teardowns Barium titanate, Dielectric Resonant Oscillator, Doppler Effect, Local Oscillator, MDU, Microwave Transceiver, Mixer, Motion Detector Unit, Radar Motion Sensor, Spectrum Analyzer, X-Band

Teardown of a Philips Dimmable LED Bulb

August 27, 2017 kwong

I bought six Philips dimmable LED bulbs for my dinning room chandelier last year. These are 45W incandescent equivalent (7W, […]

Electronics Dimmable, Heatsink, LED Bulb, Philips

Converting Celsius to Fahrenheit – The Analog Way

August 6, 2017 kwong

I have an old Keithley 1301 temperature probe. This probe is an accessory to the Keithley 130A/131 multimeter and is […]

Electronics Celsius, Fahrenheit, Keithley 1301, Keithley 130A, Keithley 131, Op Amp, Temperature Sensor, TL431

More Information on BSide ACM03 Plus Clamp Meter

August 1, 2017 kwong

In my previous post, I did a review and teardown of a cheap BSide ACM03 Plus clamp meter and concluded […]

Electronics ACM03, BSide, Clamp Meter, DMM, FS9721, FS9721 LP3

BSide ACM03 Plus Clamp Meter Review and Teardown

July 23, 2017 kwong

I recently purchased a BSide ACM03 Plus clamp meter so that I could do some high current measurements for my […]

Electronics, Product Reviews ACM03, ACM22A, BSide, Clamp Meter, Hall Effect, Multimeter, Review, Teardown

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