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Archive for the ‘Teardowns’ Category

Inside a Datum 9300 time code generator

Wednesday, August 1st, 2018

Kerry Wong did a teardown of a Datum 9300 time code generator: IRIG time code generators (not to be confused with the ones used in video and film industry) are often used for clock synchronization among various connected equipment and is commonly used in power generation and distribution industry as...

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Electronic key tear down

Tuesday, July 10th, 2018

Tear down of an Electronic key  from Electronupdate: In the mid 1980's a company called Dallas Semiconductor was producing a wide range of small RAMs with integrated battery backup. One of the more unusual item was an early attempt at an electronic key: a user would be issued a key which...

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Teardown of an MVMT dual USB port wall outlet adapter

Monday, July 9th, 2018

Kerry Wong did a teardown of an MVMT dual USB port wall outlet adapter: Specification wise, the adapter is rated to provide 2.1A for its USB output. I did some load testing with an electronic load I built before and it appeared that the 2.1A is rated for the combined output...

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Hard disk drive head assembly teardown

Monday, July 2nd, 2018

A look at a head assembly for a hard disk drive. See the full post on Electronupdate blog. Check out the video after the break. (more…)

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Siglent SDG6000X Series Arbitrary waveform generator review, teardown and experiments

Wednesday, June 6th, 2018

A closer look at the newly released Siglent SDG6000X Series Arbitrary Waveform Generator from The Signal Path: The full teardown of the unit reveals the internal architecture of the instrument, DAC / FPGA interconnect as well as the output amplifier structure. Although the limitations of the FPGA prevents the instrument to operate...

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Microsoft “Intellimouse” teardown

Monday, May 28th, 2018

Microsoft "Intellimouse" teardown from Electronupdate: Before the advent of optical mice, the go to technology was a steel ball which moved two drive shafts to indicate position. A good example of this is this Microsoft "Intellimouse". As expected the electronics are built around a small micro controller Check out the video...

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Teardown of a GM3120 electromagnetic radiation tester

Monday, May 21st, 2018

Kerry Wong did a teardown of a cheap GM3120 field strength meter: There are a lot of cheap electromagnetic radiation testers out there which boast some quite impressive claims. So I decided to pick up a popular one (GM3120) from eBay to see how well it works. And perhaps more...

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DEC PDP 11 / 24 CPU CARD: State of the art design from 1979

Thursday, March 29th, 2018

DEC PDP 11/24 CPU card teardown from Electronupdate: This is a cpu card from a class of computers known as mini-computers. By the late 1970's DEC was about to be eclipsed by the microcomputer. At the same time this card was in production the 68000 and 8086 16-bit class micro processors...

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DRAM DIMM teardown

Monday, March 5th, 2018

A look at the silicon and circuit board of a common DRAM DIMM by Electronupdate. See the full post here. Check out the video after the break. (more…)

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Capacitor plague? Inside an HP 8620C sweep oscillator and HP 86245A RF plugin

Wednesday, February 21st, 2018

A teardown of the HP 8620C and HP 86245A by Kerry Wong: I just picked up an HP 8620C sweep oscillator with an HP 86245A 5.9 GHz to 12.4 GHz RF plugin on eBay. This time around though, the unit does not work. While it was advertised as a working...

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Teardown of an HP 8671A microwave frequency synthesizer

Monday, February 5th, 2018

Kerry Wong did a teardown of an HP 8671A microwave frequency synthesizer: I recently bought an HP 8671A microwave frequency synthesizer on eBay. This synthesizer can generate signals from 2GHz to 6.2GHz with an unleveled output of more than 8dBm. It is a nice complement to my HP 8642B signal...

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The traveling wave tube inside HP 493A is radioactive

Monday, January 22nd, 2018

Kerry Wong writes, "In my previous video featured on EEVBlog I did a teardown of an HP 493A microwave amplifier along with the traveling wave tube inside. I actually had done a teardown of an identical unit a while ago but this time I managed to take a peek at...

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Inside a PM1A color analyzer

Monday, January 15th, 2018

Kerry Wong did a teardown of a PM1A color analyzer: As I mentioned in one of my posts a few years back, a color analyzer from the 80’s can be a treasure trove for the hobbyists. And at the very least, it is a cheap way to get yourself a...

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Teardown of an opto-isolator

Monday, January 8th, 2018

Cross section and analysis of an opto-isolator from Electronupdate. Check out the video after the break. (more…)

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Teardown of a 65W Cree LED bulb

Wednesday, January 3rd, 2018

Kerry Wong did a teardown of a 65W Cree LED bulb: Upon removing the glass bulb enclosure, I was a bit surprised to see that only two power LEDs were used in this Cree bulb. Typically, you would see many more lower wattage LEDs put together to achieve higher wattage...

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Sense energy monitor teardown – sampling in MHz

Thursday, December 21st, 2017

Tisham Dhar did a teardown of a Sense Energy monitor: Recently I obtained a Sense Energy monitor via US from Margaret of BitKnitting. She is doing a very interesting neighbourhood energy efficiency project. As usual I could not contain my curiosity and opened it up to have a look. I...

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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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