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Archive for the ‘Teardowns’ Category

Teardown and repair of an GW Instek PSW80-40.5 1080W multi-range programmable power supply

Friday, November 30th, 2018

Teardown and repair of an GW Instek 1080W power supply from The Signal Path: In this episode Shahriar investigates the failure of a GW Instek 1080W power supply capable of providing up to 80V and 40A of programmable output voltage and current respectively. The power supply does not power on....

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Teardown of an Array 3711A 300W DC electronic load

Thursday, November 15th, 2018

Kerry Wong did a teardown of an Array 3711A 300W electronic load: I have made many electronic loads in the past. For instance this simple harddrive cooler housed small dummy load, this more sophisticated constant current/constant programmable load and this heavy-duty electronic load that is capable of sinking over 1kW...

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Inside a two-quadrant power supply – Agilent 66312A teardown and experiment

Tuesday, October 9th, 2018

Kerry Wong did a teardown of an Agilent 66312A dynamic measurement DC source: Typically, a lab power supply can only operate within a single quadrant. Take a positive voltage power supply for example, it can only output or source current. If any attempt is made trying to sink current into...

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Glowing mercury thyratrons: Inside a 1940s Teletype switching power supply

Monday, September 24th, 2018

Ken Shirriff take a look inside a bulky DC power supply REC-30 rectifier, how it works and contrast it with a MacBook power supply: We recently started restoring a Teletype Model 19, a Navy communication system introduced in the 1940s.14 This Teletype was powered by a bulky DC power supply...

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Tool battery teardowns: Craftsman 19.2V and Ridgid 12V

Monday, September 10th, 2018

Russell Graves did teardown of a Craftsman 19.2V DieHard battery and a Ridgid 12V battery: It's time for more tool battery teardowns!  This week, I've got a Craftsman 19.2V DieHard battery, and a cute little Ridgid 12V battery.  They're both lithium, and I'm going to dig into both of them, because...

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Tutorial, experiment and teardown of a 24GHz Doppler radar module

Tuesday, August 28th, 2018

Shahriar posted a detailed analysis of a CDM324 24GHz Doppler radar module from IC Station: Opening the module reveals a series of microwave PCB components and several active devices. A complete analysis of the module is presented. The unit is then measured and the impact of antenna impedance and power...

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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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