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Archive for the ‘Teardowns’ Category

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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Mastr III repeater teardown

Tuesday, December 27th, 2016

[embed]http://www.youtube.com/watch?v=grzvNoBKWuo[/embed] Kenneth Finnegan writes, "I recently purchased a pallet (!) of Mastr III repeaters for some parts. These are really unique radio systems since their so modular, so I thought you'd enjoy a video where I tear one apart and talk through its basic theory of operation." More details at Kenneth's...

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Software Defined Radio IC Decap: R820/RTL2832U

Monday, December 26th, 2016

Software Defined Radio teardown: R820/RTL2832U Decap Recently there has been much interest in two integrated circuit which were originally designed to receive FM radio and DVB-T TV (as used in Europe). Some enterprising people quickly realised that since they were based on software-defined techniques they could be quickly re purposed...

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Bad electrolytic capacitor teardown

Monday, December 19th, 2016

Teardown and analysis of a bad electrolytic capacitor from Electronupdate: So, there sitting in a dumpster is what looks like a perfectly good monitor... some of the protective plastic on the base was never even peeled off. A quick power up showed why it was tossed: it simply did not...

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Teardown of a Vivitar Rapid battery charger

Wednesday, December 14th, 2016

Kerry Wong did a teardown of a Vivitar rapid battery charger for the NP-FW50 lithium-ion battery pack used in Sony A6000 digital camera: The circuit board itself though looks surprisingly clean and well designed. It does not use any dedicated lithium ion battery charging ICs however. Rather a MC34063A buck/boost...

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Posted in Teardowns | 1 Comment »

LED candle effect: Tear down and decap of a controller

Monday, December 12th, 2016

[embed]http://www.youtube.com/watch?v=ndXQex_spS8[/embed] A teardown video from Electronupdate: A dollar store item which implements a flickering candle effect using and LED. A look at the technology: linear feedback shift register or ROM based? Let's decap the controller and take a look at the silicon die to find out! More details at Electronupdate blog.

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Posted in LEDs, Teardowns | No Comments »

Bertan/Spellman 225-20R HV power supply teardown

Friday, December 2nd, 2016

Kerry Wong did a teardown of a Bertan 225-20R 20kV high voltage power supply: I just picked up another high voltage power supply, this time it is a working Bertan/Spellman 225-20R 20kV one. Unlike the Bertan 205A-05R that I did a teardown with last time which was entirely analog, this...

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GPS Disciplined Oscillator review and teardown

Wednesday, November 16th, 2016

Andy Brown did a teardown of a GPS Disciplined Oscillator: The design did actually surprise me. I was expecting to see an OCXO pulled from something else together with a modern GPS unit and an MCU to co-ordinate the synchronisation all mounted on a custom PCB. What we’ve actually got is...

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Posted in Teardowns | 1 Comment »

XBOX 360 GPU die decap: A look at the graphics processor silicon

Friday, November 11th, 2016

[embed]http://www.youtube.com/watch?v=vQ9OyubxoJQ[/embed] A teardown video of an XBOX 360 and analysis of GPU silicon die from Electronupdate. So, what makes an XBOX tick? One of the most notable parts will be the graphics sub system... and at the heart of it, the GPU. The GPU die is bonded onto a substrate...

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Tear down of a scientific calculator Integrated Circuit

Tuesday, October 25th, 2016

[embed]http://www.youtube.com/watch?v=_wza8DZtXuo[/embed] A detailed video teardown of a scientific calculator Integrated Circuit from Electronupdate. More info at Electronupdate blog.

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Sonicare toothbrush teardown: microcontroller, H bridge, and inductive charging

Monday, September 26th, 2016

Ken Shirriff did a teardown of a Sonicare electric toothbrush: The photos below show the top and bottom of the toothbrush internals. I expected to find a simple, low-cost mechanism, so I was surprised at how much complexity there was inside. The vibration mechanism (right) is built from multiple metal and...

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Posted in Teardowns | 2 Comments »

Teardown of a Static fieldmeter

Thursday, September 8th, 2016

A teardown of a Static fieldmeter from Kerry Wong: Static fieldmeters (or electrostatic fieldmeters) are typically used for non-contact measurements of the electrostatic field strength (usually in kV) of charged objects. These are highly specialized test instruments and most hobbyists probably seldomly have the opportunity of coming across one. So in this...

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Teardown and analysis of an Agilent 86109B Optical/Electrical DCA-X oscilloscope module

Wednesday, September 7th, 2016

Teardown and analysis of an Agilent 86109B Optical/Electrical DCA-X oscilloscope module from The Signal Path: In this episode Shahriar presents the inner workings of an Agilent 86109B optical/electrical DCA-X oscilloscope module. This particular model offers up to 50GHz of electrical bandwidth and an optical input capable of receiving up to...

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Contactless transit card teardown

Monday, July 25th, 2016

A RFID transit pass teardown from Electronupdate: Here is the die photo: super tiny. I bet they get thousands of dice off of each wafer. Looks like it's a protocol called MIFARE. Vendor of the chips is NXP. I think it's their ultra light family The amazing bit is that...

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Dewalt DW9118 battery charger teardown

Wednesday, July 13th, 2016

[embed]http://www.youtube.com/watch?v=h_xKzx_R840[/embed] Dewalt DW9118 battery charger teardown video from Electronupdate: Tear down of a failed Dewalt DW9118 charger. A look at the circuit board, the fuse, circuit topology and a decap an analysis of the Zilog Z86C04 controller. More info at Electronupdate blog.

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Wavetek 395 arbitrary waveform generator teardown

Tuesday, June 28th, 2016

Kerry Wong did a teardown of the Waveform 395 12 bit arbitrary waveform generator: I picked up a Wavetek 395 arbitrary waveform generator on eBay a few weeks ago. Wavetek 395 is a single channel, 12-bit resolution DDS AWG with a maximum clock frequency of 100 MHz. While the operation...

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Amazon’s cheapest multimeter teardown: The DT-830B

Wednesday, June 8th, 2016

A teardown of Amazon's cheapest multimeter the DT-830B by Electronupdate: Purchased the cheapest multimeter I could find so I could extract the integrated circuit. A surprisingly simple IC! The actual meter design was much as expected. Poor attention to detail for higher voltages, concerning lack of fuses on current measurements......

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Posted in Teardowns | 3 Comments »

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