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Archive for the ‘Teardowns’ Category

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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Teardown and review of the new MHS5200A

Friday, March 10th, 2017

[embed]http://www.youtube.com/watch?v=TQXd7u4kPvs[/embed] Craig writes: I’ve gotten a lot of questions on the blog about the new version of the MHS5200A function generators available on eBay. Viewer Tolga was kind enough to send one in to me to review and tear down. Although some improvements have been made over the older models,...

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Datum/Symmetricom 8040 Rubidium frequency standard teardown

Tuesday, March 7th, 2017

Teardown: A look at the Datum/Symmetricom 8040 Rubidium frequency standard The 8040 used an LPRO 101 (low profile Rubidium oscillator) oscillator. Interestingly, there is a note written on the top of the LPRO case: “vibration test may have magnetized cover”. As you may know, Rubidium standards’s accuracy is very sensitive...

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Keysight MXA revision-b signal analyzer / Spectrum analyzer review, analysis & experiments

Monday, March 6th, 2017

Keysight MXA revision-b signal analyzer / Spectrum analyzer review, analysis & experiments from The Signal Path: In this episode Shahriar reviews the long awaited Keysight MXA Signal Analyzer (N9020B). The new X-Series Spectrum Analyzers from Keysight offer an entirely re-designed GUI interface which supports multiple tabs as well as multi-touch interaction....

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Teardown and analysis of microwave (26.5GHz) electro-mechanical step attenuators

Tuesday, February 21st, 2017

[embed]http://www.youtube.com/watch?v=IQZxvtEn4T8[/embed] Teardown and analysis of microwave (26.5GHz) electro-mechanical step attenuators from The Signal Path: In this short episode Shahriar takes a close look at a pair of Hewlett Packard microwave electro-mechanical step attenuators operating up to 26.5GHz. Mechanical attenuators offer excellent repeatability, low insertion loss and nearly limitless linearity. The...

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Teardown of a Peaktech 6225A

Tuesday, February 7th, 2017

Teardown and analysis of a Peaktech 6225A power supply from ElectroBob: I got a Peaktech 6225A power supply to power some things, as it seemed like a good deal, going beyond what one might find normally in these types of supplies: more display resolution and supposedly, lower noise. For this price,...

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A look at the Neopixel: Controller die teardown

Sunday, February 5th, 2017

A look at the Neopixel from Electronupdate: A WorldSemi WS2812B, a.k.a. "NeoPixel".  This little device can be easily controlled by a Arduino and can be used in all sorts of neat things.  More details, and a truly excellent Arduino Library may be found at Adafruit. Three LEDs and a controller bonded into...

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4-20ma panel meter teardown

Thursday, February 2nd, 2017

Teardown of a 4-20ma panel meter from SteelCity Electronics: Below is a panel meter that has been used in some sort of industrial process. It was manufactured in 1980 and I’m not quite sure who the manufacturer was – the company’s logo is not easy to read but it might say, “Aumano”....

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Teardown, repair and experiments with a Tektronix RSA 6114A real-time spectrum analyzer

Friday, January 27th, 2017

Tektronix RSA real-time spectrum analyzer teardown from The Signal Path: In this episode Shahriar attempts a difficult repair of a Tektronix RSA real-time spectrum analyzer. This well-equipped instrument reports several error messages during startup POST including LO Unlock as well as Signal Path failures. The service manual of the instrument...

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Teardown, experiments and calibration of an Ist-Rees laser spectrum analyzer

Tuesday, January 24th, 2017

Ist-Rees laser spectrum analyzer teardown from The Signal Path: In this short episode Shahriar takes a close look at an Ist-Rees laser spectrum analyzer. This simple instrument is based on a continuously rotating diffraction mirror to detect various wavelengths. A trigger signal is used to denote the beginning of the scan...

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TI’s Little Professor

Monday, January 23rd, 2017

A teardown of TI's Little Professor vintage calculator from KuzyaTech: This thing was sold for parts and repair since the seller did not think it was working. As it turned out, everything worked just fine, but not in an expected way. This is not your typical calculator, but rather a teaching one....

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Tear down of a super capacitor

Tuesday, January 10th, 2017

[embed]http://www.youtube.com/watch?v=8Uxd00N3CRc[/embed] A teardown video of a 1 Farad super capacitor from Electronupdate: In a recent video on the tear down of an electrolytic cap a viewer was wondering what a super capacitor looks like. They have much more capacitance: 10,000 time more on average for the same volume. Surely this means the...

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Curtis 1231C-8601 500A PWM DC motor controller teardown

Monday, January 9th, 2017

Jay did a teardown of a Curtis 1231C-8601 500A PWM DC motor controller: The Curtis 1231c-8601 power board is relatively simple. It uses 18 MOSFETS in parallel to switch current from the motor- terminal back to the battery- terminal (the motor+ lead is already connected to battery+). The MOSFETs it uses...

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Solar battery charge controller teardown

Monday, January 2nd, 2017

[embed]http://www.youtube.com/watch?v=2vCQJtN3Obk[/embed] A teardown video of a solar battery charge controller from Electronupdate: A solar battery charger: one side goes to a Solar Panel, the other to a lead-acid battery. A charge controller allows the battery to be safely charged. Snagged off of Amazon. Seemed really cheap at $17.36. A look...

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