Posts tagged ‘Teardown’

Teardown of a BK Precision 1696 Programmable Switching Power Supply

I recently picked up a BK Precision 1696 programmable switching power supply off eBay. Unlike many of the vintage test equipment I did teardowns with in the past, this model is still in production today. The one I got was sold with a damaged LCD screen and thus I paid very little for it. Of course, a brand new one would cost around $300. Continue reading ‘Teardown of a BK Precision 1696 Programmable Switching Power Supply’ »

Teardown and Testing of an 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 be a suitable choice. In theory, all the lights and the refrigerator in my house consume just around 500W. So the 1.5kWh battery bank should be able to power all the essentials for at least a couple of hours in the event of a power failure. Continue reading ‘Teardown and Testing of an 800W PureSine Inverter’ »

BSide ACM03 Plus Clamp Meter Review and Teardown

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 makes it one of the cheapest Hall effect clamp meters on the market that is capable of measuring both AC and DC current. Continue reading ‘BSide ACM03 Plus Clamp Meter Review and Teardown’ »

Bertan/Spellman 225-20R HV Power Supply Teardown

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 one can be controlled digitally either via the front panel or via GPIB from the back. In this blog post, let me share some of the teardown pictures with you. If you are interesting in seeing some cool experiments with this high voltage power supply, you can scroll down and watch my video towards the end. Continue reading ‘Bertan/Spellman 225-20R HV Power Supply Teardown’ »

Epson PowerLite 84 Multimedia Projector Teardown and Repair

I recently was given a broken Epson PowerLite 84 projector. The projector would not turn on when plugged in and there was no sign of life. So I decided to take a look at what was wrong with it. The potential reward is high since I do not have a projector yet and I could definitely use one for my home theater setup. A video of this teardown and repair is linked towards the end. Continue reading ‘Epson PowerLite 84 Multimedia Projector Teardown and Repair’ »

Lambda LQ-521 Power Supply Teardown and Repair

I bought a non-working Lambda LQ-521 linear power supply on eBay a couple of weeks ago. Usually I avoid knowingly buying something that is broken unless I am certain that I could obtain parts for it at a reasonable price. But buying broken linear power supplies is another story as most of the problem can be fixed with readily available components. Continue reading ‘Lambda LQ-521 Power Supply Teardown and Repair’ »

RSA SecurID Teardown

I did a teardown of an RSA SecurID many years ago (you can see that post here). In that teardown, it was an older generation (SD600) of the RSA SecurID. In this post, let’s take a look at what’s inside the newer SID700 series RSA SecurID token. A short video of the teardown is included towards the end. Continue reading ‘RSA SecurID Teardown’ »

Teardown of an 8-10 GHz RF Isolator

I did a teardown video of a microwave range (8-10 GHz) RF isolator last week. As a follow up, I will post some of the high-resolution pictures I took during the process here (click to see larger images). Continue reading ‘Teardown of an 8-10 GHz RF Isolator’ »

Teardown of a Tektronix 2465

Today at a time when digital storage oscilloscopes (DSO) are almost ubiquitous, analog scopes like Tektronix 2465 remain popular among many electronics hobbyists, especially among amateur radio operators who routinely work with high frequency circuits. I got my 2465 from ValueTronics. For those who haven’t heard about them, I would recommend you check them out as they have a large selection of used test equipment at reasonable prices. Continue reading ‘Teardown of a Tektronix 2465’ »

Some Pictures of My HP 8566B Spectrum Analyzer

The latest addition to my lab is an HP 8566B spectrum analyzer. This isn’t just any spectrum analyzer, it was perhaps the best spectrum analyzer money could buy back in the late 80’s. While it was discontinued in 1997 and has long become obsolete, its performance remains quite impressive even by today’s standards and still rivals that of many of its modern counterparts. Continue reading ‘Some Pictures of My HP 8566B Spectrum Analyzer’ »

EDC/Krohn-Hite MV216A DC Voltage Standard Teardown and Tempco Measurement

In this blog post, we are going to take a look at Electronic Development Corporation’s (EDC, acquired by Krohn-Hite in 1998) MV216A battery/external powered DC voltage standard and also measure its voltage reference’s temperature coefficient (tempco). A teardown video is also included towards the end. MV216A is a six decade precision DC voltage standard, it can output from 0.1µV in 100mV range all the way up to 11.1111V in 10V range. Voltage standards of this caliber are usually used as calibrators to calibrate multimeters and other test instruments. Continue reading ‘EDC/Krohn-Hite MV216A DC Voltage Standard Teardown and Tempco Measurement’ »

Teardown of a Cisco CSS 11503 Content Services Switch

This old Cisco switch was on its way to the dumpster at my work place, so I thought I would rescue it. After all, while there are plenty of teardowns of consumer grade networking gear on the internet, teardowns of enterprise level network equipment have been hard to come by. So at the very least it would be a good opportunity to take a good peek inside. Continue reading ‘Teardown of a Cisco CSS 11503 Content Services Switch’ »

Wavetek 1045 RF Power Meter Teardown

I bought a Wavetek 1045 RF power meter off eBay a few weeks ago. It came with a 13787 detector which is capable of measuring RF power between -50 dBm to 10 dBm with a frequency range of 1 MHz to 18 GHz. Continue reading ‘Wavetek 1045 RF Power Meter Teardown’ »

T is for TWT

Traveling-wave tube (TWT) is mainly used to amplify signals in the microwave frequency range. Unlike most vacuum tubes, which had largely given way to their more elegant semiconductor counterparts many decades ago, TWT is still being widely used today in many areas, especially in places where low noise and high output power is needed. I had always wanted to get my hands on one so when I saw an old HP 493A microwave amplifier for sale for peanuts, I simply could not resist snatching it. Continue reading ‘T is for TWT’ »

HP 8642B Teardown Pictures

In my last post, I showed my LED backlight mod of the HP 8642B synthesized signal generator. And during the process, I also showed some pictures of the A1 (keyboard and LCD) module and A2 (modulator) module alone with an intriguing Easter egg message in the firmware. In today’s post, I will do a full teardown of each module and take a closer look at what’s inside. Continue reading ‘HP 8642B Teardown Pictures’ »