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Archive for the ‘Teardowns’ Category

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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Teardown and testing of an 800W PureSine inverter

Monday, October 2nd, 2017

Kerry Wong has posted a detailed teardown and testing of a Reliable Electric 800W PureSine Inverter: The last ingredient for my backup power project is an inverter. Since the battery bank I built is a 12V 1.5kWh one, an inverter that can handle a load between 500W and 1000W would...

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Teardown and repair of an Agilent E3632A DC power supply

Friday, September 22nd, 2017

Teardown and repair of an Agilent E3632A DC power supply from The Signal Path: In this episode Shahriar & Rosanah investigate an Agilent power supply which does not appear to power on. It can be quickly observed that the fuse has failed on the unit. Using an isolation transformer a...

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Teardown and experiments with a Doppler microwave transceiver

Thursday, September 7th, 2017

Kerry Wong did a teardown of Microsemi's C900502 X-band planar transceiver: I got a couple of Microsemi’s C900502 10.525 GHz X-band Doppler radar motion sensors a while ago. This batch was made in UK and had “UK patents 2243495 and/or 2253108 apply” printed on the case. I have seen a...

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Teardown of a Philips dimmable LED bulb

Thursday, August 31st, 2017

Kerry Wong did a teardown of a Philips dimmable LED bulb: One of the first things you will notice about this light bulb is that the compact construction. Most noticeably the lack of the telltale heatsink fins. As a result however, the heat dissipation capability is greatly sacrificed. During normal...

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Teardown and repair of an Agilent 53152A 46GHz microwave frequency counter

Wednesday, August 9th, 2017

Agilent 53152A 46GHz frequency counter teardown and repair from The Signal Path: In this episode Shahriar investigates a faulty Agilent 53152A 46GHz frequency counter. The instrument does not power on and shows no sign of internal voltage presence. Teardown of the instrument reveals a large PCB where all analog and digital circuity...

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BSide ACM03 plus clamp meter review and teardown

Monday, July 24th, 2017

A review and teardown of a cheap Hall effect clamp meter (ACM03 Plus) from Kerry Wong: I recently purchased a BSide ACM03 Plus clamp meter so that I could do some high current measurements for my tab welder project. This meter can be bought on eBay for around $25, which...

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Battery adapter teardown and Sony A6000 power-off current draw

Wednesday, July 19th, 2017

  Kerry Wong did a teardown  of a battery adapter for the Sony A6000 mirrorless digital camera and measured the poweroff current draw of the the camera: With the battery adapter on hand, I decided to take a look at what’s inside and then use the adapter to measure the...

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65C02: Tear down, a look at the CMOS version of the 6502 CPU

Thursday, July 6th, 2017

https://www.youtube.com/watch?v=qbaKfvPoNhY A teardown video from Electronupdate: The CMOS version of the commercially significant 6502: a processor architecture which launched the personal computer era. This particular version was plucked off of an embedded industrial controller... a place where this processor still finds design wins.

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Dallas Semiconductor DS1284 die decap: A look at a 30 year old design

Tuesday, June 27th, 2017

Dallas Semiconductor DS1284 die decap from Electronupdate: The Dallas Semiconductor DS1284 (and related DS1286 which integrated a battery and crystal in the same package) found lots of use in industrial control and test equipment. 30 years ago processor chips contained not much other than the processor. Utility functions such as real...

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Recent Comments

  • Dan: Free is always good. Nice boards too.
  • Dan: Free is always good.
  • KH: I think no plague. Both failed capacitors are on the same side. Look at the backplane, it's likely the failed caps were on the left...
  • Glendon: Free is always GOOD!
  • Wilyb: Gotta catch them all!