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Archive for the ‘Teardowns’ Category

Teardown and modification of an Electrophoresis power supply

Monday, August 19th, 2019

Kerry Wong did a teardown of an EC600-90 electrophoresis high voltage power supply: Electrophoresis power supplies are commonly found in biology and other life sciences laboratories. These power supplies are usually capable of supplying high voltages and high currents required for gel electrophoresis–a method used for separating DNA, RNA and...

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Looking inside a 1970s PROM chip that stores data in microscopic fuses

Wednesday, July 31st, 2019

Ken Shirriff did teardown of a 1970s PROM chip: The MMI 5300 was a memory chip from the early 1970s, storing 1024 bits in tiny fuses.1 Unlike regular RAM chips, this was a PROM (Programmable Read-Only Memory); you programmed it once by blowing fuses and then it held that data...

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Teardown of a Marconi 2305 modulation meter

Wednesday, May 29th, 2019

Kerry Wong did a teardown of a Marconi 2305 modulation meter: I picked up a Marconi 2305 modulation meter off eBay the other day. As the name indicated, a modulation meter is used to measure the modulation characteristics of a source signal. The Marconi 2305 is capable of measuring amplitude/frequency...

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Teardown of a LogiMetrics A300/S traveling wave tube amplifier

Tuesday, April 30th, 2019

 LogiMetrics A300/S TWTA teardown by Kerry Wong: I just picked up a LogiMetrics A300/S 2 GHz to 4 GHz (S band) traveling wave tube amplifier (TWTA) on eBay. I had done an extreme teardown of an HP 493A TWTA a while ago and it was quite fascinating to see what’s inside...

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Crystal oscillator teardown

Wednesday, April 17th, 2019

Here's a tear down of a crystal oscillator and a look at the silicon controller from Electronupdate:  Inside is a ceramic circuit board.  Ceramic has a low coefficient of thermal expansion which is probably very desirable here. It will also not absorb moisture.  All of this would affect the frequency. More details...

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Teardown of a Spex HS1000 monochromator controller

Monday, April 1st, 2019

Kerry Wong did a teardown of a SPEX HS1000 monochromator/spectrometer controller: Monochromator is one of those things that has always fascinated me. Over the years, I have done quite a few experiments (I, II, III) with an EP200Mmd monochromator and it was a lot of fun. Because monochromators are such...

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Teardown of a Piezoelectric vibrating gyroscope

Wednesday, February 6th, 2019

Kerry Wong did a teardown of an old analog piezoelectric vibrating gyroscope: Gyroscopes nowadays are based on micro-electro-mechanical systems (MEMS) technology. They are low cost and extremely miniaturized. A device combing both a three-axis gyroscope and a three-axis accelerometers (sometimes these devices are referred to as 6DOF devices) such as the...

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Dashcam GPS module

Tuesday, December 18th, 2018

A look at the Dashcam GPS module by Electronupdate: After a 4 year run the dashcam on my car stopped working: a fault seems to have developed in the power system.  It was mounted to the window by what I thought was just a simple mechanical mount... on further analysis it...

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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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  • Joe Desbonnet: Ya, I can recommend the low melting point solder. I used brand 'ChipQuik' and it's amazingly easy to use.
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