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Archive for the ‘Teardowns’ Category

Teardown of an Extech 380460 milliohm meter

Wednesday, December 13th, 2017

Kerry Wong did a teardown of an Extech 380460  miliohm meter: This is a highly specialized instrument, all it does is measuring low ohm range resistance (from 200mΩ to 2000Ω in five ranges) and nothing else. The meter came with a rugged case which is handy for field use, although...

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Teardown of an ATVR-1000D AC voltage regulator

Monday, November 27th, 2017

Kerry Wong did a teardown of an ATVR-1000D automatic AC voltage regulator and discussed how different types of AC regulators work: The ATVR-1000D utilizes a motor to drive the wiper of a autotransformer (Variac), the servo motor can be driven in either direction depending on the output from the OpAmp...

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Schottky diode cross section

Tuesday, November 14th, 2017

The cross section of a 1N5817 20V 1A rectifier diode from Electronupdate. Check out the video after the break. (more…)

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Teardown of a BK precision 1696 programmable switching power supply

Thursday, November 9th, 2017

Kerry Wong did a teardown of a BK Precision 1696 programmable switching power supply: My original plan was to find a replacement LCD and restore the unit to its original full functionality. But the LCD used in this unit is likely specifically made for the 169X series of power supplies...

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Teardown and testing of an 800W PureSine inverter

Monday, October 2nd, 2017

Kerry Wong has posted a detailed teardown and testing of a Reliable Electric 800W PureSine Inverter: The last ingredient for my backup power project is an inverter. Since the battery bank I built is a 12V 1.5kWh one, an inverter that can handle a load between 500W and 1000W would...

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Teardown and repair of an Agilent E3632A DC power supply

Friday, September 22nd, 2017

Teardown and repair of an Agilent E3632A DC power supply from The Signal Path: In this episode Shahriar & Rosanah investigate an Agilent power supply which does not appear to power on. It can be quickly observed that the fuse has failed on the unit. Using an isolation transformer a...

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Teardown and experiments with a Doppler microwave transceiver

Thursday, September 7th, 2017

Kerry Wong did a teardown of Microsemi's C900502 X-band planar transceiver: I got a couple of Microsemi’s C900502 10.525 GHz X-band Doppler radar motion sensors a while ago. This batch was made in UK and had “UK patents 2243495 and/or 2253108 apply” printed on the case. I have seen a...

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Teardown of a Philips dimmable LED bulb

Thursday, August 31st, 2017

Kerry Wong did a teardown of a Philips dimmable LED bulb: One of the first things you will notice about this light bulb is that the compact construction. Most noticeably the lack of the telltale heatsink fins. As a result however, the heat dissipation capability is greatly sacrificed. During normal...

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Teardown and repair of an Agilent 53152A 46GHz microwave frequency counter

Wednesday, August 9th, 2017

Agilent 53152A 46GHz frequency counter teardown and repair from The Signal Path: In this episode Shahriar investigates a faulty Agilent 53152A 46GHz frequency counter. The instrument does not power on and shows no sign of internal voltage presence. Teardown of the instrument reveals a large PCB where all analog and digital circuity...

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BSide ACM03 plus clamp meter review and teardown

Monday, July 24th, 2017

A review and teardown of a cheap Hall effect clamp meter (ACM03 Plus) from Kerry Wong: I recently purchased a BSide ACM03 Plus clamp meter so that I could do some high current measurements for my tab welder project. This meter can be bought on eBay for around $25, which...

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Battery adapter teardown and Sony A6000 power-off current draw

Wednesday, July 19th, 2017

  Kerry Wong did a teardown  of a battery adapter for the Sony A6000 mirrorless digital camera and measured the poweroff current draw of the the camera: With the battery adapter on hand, I decided to take a look at what’s inside and then use the adapter to measure the...

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65C02: Tear down, a look at the CMOS version of the 6502 CPU

Thursday, July 6th, 2017

https://www.youtube.com/watch?v=qbaKfvPoNhY A teardown video from Electronupdate: The CMOS version of the commercially significant 6502: a processor architecture which launched the personal computer era. This particular version was plucked off of an embedded industrial controller... a place where this processor still finds design wins.

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Dallas Semiconductor DS1284 die decap: A look at a 30 year old design

Tuesday, June 27th, 2017

Dallas Semiconductor DS1284 die decap from Electronupdate: The Dallas Semiconductor DS1284 (and related DS1286 which integrated a battery and crystal in the same package) found lots of use in industrial control and test equipment. 30 years ago processor chips contained not much other than the processor. Utility functions such as real...

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Tutorial, experiments and teardown of a 77GHz automotive FMCW radar module

Friday, June 2nd, 2017

Tutorial, experiments and teardown of a 77GHz automotive FMCW radar module from The Signal Path: In this episode Shahriar explores the principle operation of automotive FMCW radars. Thanks to a donated automotive radar module, various components of the system can be examined and explored. The PCB reveals three die-on-PCB ASICs responsible...

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Piezoelectric buzzer teardown

Thursday, June 1st, 2017

A teardown of piezoelectric buzzer from  Electronupdate: An assembly commonly used on fire, burglar and similar alarm systems. Based around a piezoelectric disk coupled to a plastic cylinder with a hole on the end (used to amplify the sound). The controller appears to use a rom-based look up table to...

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Philips MR16 12V 2017 LED teardown

Wednesday, May 17th, 2017

Teardown of a 500lm MR16 12V LED light bulb from Electronupdate. Check out the video after the break. (more…)

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Deepace KC901V 6.8GHz handheld network analyzer review, teardown and experiments

Tuesday, May 16th, 2017

  Teardown and analysis of Deepace KC901V 6.8GHz handheld network analyzer from the The Signal Path: In this episode Shahriar reviews the Deepace KC901V 6.8GHz handheld network analyzer. This battery-powered instrument is an RF multi-instrument integrating VNA, spectrum analyzer, field strength meter, and a low-frequency signal generator. It can also perform signal port vector...

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HP 7044A X-Y recorder teardown, Lorenz Attractor

Wednesday, May 3rd, 2017

Kerry Wong did a teardown of a vintage HP 7044A x-y recorder and programmed an Arduino Due to draw the Lorenz Atrractor using this recorder: To test the recorder, I wrote a simple program using Arduino Due that generates a Lorenz attractor. The min/max boundaries for each axis were obtained...

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Teardown of a TDA7375 audio amplifier IC

Wednesday, April 12th, 2017

A teardown of a TDA7375 audio amplifier IC from Electronupdate: The TDA7375 audio power amplifier. Another example of a long-lived integrated circuit.  1st introduced in 1998... looks like it's still being made. Check out the video after the break. (more…)

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Cheap UV EPROM eraser teardown and spectrum analysis

Monday, April 10th, 2017

  Kerry Wong did a teardown of a cheap UV EPROM eraser and measured the spectrum of the UV tube using a monochromator: Till recently, I have been using custom circuitry whenever I needed to backup some firmware. But the process was rather tedious as for each kind of EPROM...

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Recent Comments

  • Pekka Akselin: This is ridiculous!? :-) We are back at 256(!) byte EPROMs that needed multiple, a handful, of voltages to run! :-(
  • KH: Let's try a back-of-envelope calc balancing energies. From MCP1700 datasheet, there are graphs for a 200mA load step. Estimate the energy shortfall as 12uJ. Say...
  • Daniel: It's been a week and my comment is still awaiting moderation. Apparently the CIA doesn't want their involvement known?
  • KH: Agree, so okay, I guess he must have learned from somewhere. 100nF and 1000uF is so far apart, that was jarring; it's more magic incantation...
  • Max: I have a suspicion the hefty electrolytic cap might be some sort of cargo cult carry-over from other RF-based projects - for instance, I've seen...