Skip to content

Experimental Engineering

  • The Engineer
    • The Tools
    • The Shack
    • OpenPGP Public Key
    • Contact The Engineer
  • Circuit Simulator
  • Project List
  • Photo Albums
    • Whitby Camping Trip – August 2020
    • Electric Glassware Collection
    • Glasgow Transport Museum 2018
    • Astle Park Steam Rally 2017
    • Anson Engine Museum 29-08-16
    • Download Festival Photo Albums
      • Download Festival 2009
      • Download Festival 2010
      • Download Festival 2011
      • Download Festival 2014
      • Download Festival 2015
      • Download Festival 2016
      • Download Festival 2017
        • Demolition Download IV
      • Download Festival 2018
        • Demolition Download V
        • Lords Of Lightning
        • Circus Of Horrors
      • Download Festival 2019
      • Download Festival 2020
      • Download Festival 2022

Tag: amplifier

Cat Links Randoms

Sony HVC-3000P Trinicon Camera Teardown

Posted on February 1, 2019December 27, 2018 The Engineer

Following on from the viewfinder teardown, here’s the rest of the camera. This unit dates back to 1980, and is made almost exclusively of cast aluminium. Very little plastic has been used here & only for the bits that the user comes into contact with. This camera is based around

Continue readingSony HVC-3000P Trinicon Camera Teardown

Viewing Spectral Lines in Discharge, Other Colours in Output

For accurate measurements, you’ll need an optical instrument such as a monochromator or spectrophotometer or optical spectrum analyzer. But to simply see the complexity of the discharge spectrum inside the bore of a He-Ne laser tube, it’s much easier and cheaper. (Spectra for various elements and compounds can be easily

Continue readingViewing Spectral Lines in Discharge, Other Colours in Output

Cat Links Consumer Gear, Randoms, Teardown

Huawei E160E USB HSDPA Modem

Posted on February 3, 2016 The Engineer

Here’s an old HDSPA 3G USB modem stick that I got with a mobile phone contact many years ago. As it’s now very old tech, and I have a faster modem, not to mention that I’m no longer with Orange (Robbing <expletive>), here’s a teardown of the device! The top

Continue readingHuawei E160E USB HSDPA Modem

Cat Links Personal Project

12v Temperature Controlled Soldering Iron

Posted on August 6, 2015 The Engineer

In my shack, 99% of my gear is all 12v powered, which is good for a few reasons: Single Power Supply – This increases efficiency, as I’m only getting the losses of a single supply. Safety – Mains voltages are dangerous, I’m not fond of working on such equipment. Portability

Continue reading12v Temperature Controlled Soldering Iron

Cat Links Personal Project, Randoms

Labgear PSM114E/S 12v Conversion

Posted on July 23, 2015 The Engineer

Onboard the boat we have a small issue with a weak TV signal, and this coupled with a 60′ long run of coax is an issue. Due to the loss in the coax, we’ve lost most of the already weak signal. To try & solve this issue, I’m fitting a

Continue readingLabgear PSM114E/S 12v Conversion

Cat Links Personal Project

AD9850 DDS VFO PCB & Schematic Layout

Posted on November 1, 2014November 6, 2014 The Engineer

I recently came across a design for an Arduino controlled AD9850 DDS module, created by AD7C, so I figured I would release my Eagle CAD design for the PCB here. It is a mainly single-sided layout, only a few links on the top side are needed so this is easy

Continue readingAD9850 DDS VFO PCB & Schematic Layout

Cat Links Personal Project

DIY Valve Amplifier – Part 1 – Amplifier Section

Posted on January 11, 2013 The Engineer

Here are a few details of a valve amplifier I am building, using the valve related parts from a 1960’s reel to reel tape recorder. This amplifier is based on an a Mullard ECL82 triode/pentode valve, with an EM84 magic eye tube for level indication. Here the first components are

Continue readingDIY Valve Amplifier – Part 1 – Amplifier Section

Cat Links Consumer Gear

XM2000 Marine VHF Radio

Posted on June 16, 2011 The Engineer

Here is an old XM2000 marine VHF tranciever. Here is the casing split, with the main CPU board & display on the right, & the RF tranciever board on the left. View of the main CPU board, with the mic & loudspeaker on the right hand side. The channel display

Continue readingXM2000 Marine VHF Radio

Cat Links Consumer Gear

Sanyo Talkbook VAS

Posted on February 28, 2011February 10, 2011 The Engineer

Here is a Sanyo tape recorder, with built in voice activation. Takes standard audio cassettes. Here visible is the speaker on the left, microphone is on the right of the tape window. The tape counter is at the top. Back cover removed from the unit, showing the PCB & the

Continue readingSanyo Talkbook VAS

Cat Links A/V Gear

Bandridge VA-315

Posted on January 5, 2011January 4, 2011 The Engineer

This is a small audio mixer, marketed for camcorder audio dubbing. I/O Panel on the rear of the unit. Contains a small preamp, but will not drive speakers directly. Power is a 9v battery or plugpack. Front of the PCB removed from the case. Mic preamp bottom right corner. Each

Continue readingBandridge VA-315

Tip Jar

If you’ve found my content useful, please consider leaving a donation by clicking the Tip Jar below!
All collected funds go towards new content & the costs of keeping the server online.

  • Electronic Calculators
  • Ohm’s Law Calculator
  • Grid Square Locator
  • Crimp Connector Types

Blogroll

  • Arduino ccTalk Tutorials
  • Distant Signal Radio
  • Skippy's Random Ramblings

Hardware Interfacing

  • Arduino ccTalk Tutorials

Archives

  • Helium Neon Lasers
    • He-Ne Lasers – Introduction
    • Applications of a 1mW Helium-Neon Laser
    • He-Ne Laser Safety
      • Laser Safety Classifications
    • Theory of Operation, Modes, Coherence Length
    • He-Ne Laser Tubes, Heads, Structure, Power Requirements, Lifetime
    • Power Requirements for He-Ne Lasers
      • Modular He-Ne Laser Power Supply
    • Wavelengths, Beam Characteristics
    • Magnets in High Power or Precision He-Ne Laser Heads
    • Internal Mirror He-Ne Tubes up to 35 mW – Red and Other Colours
    • Viewing Spectral Lines in Discharge, Other Colours in Output
    • Demonstration He-Ne Lasers, Weatherproofing
    • Interesting, Strange, and Unidentified He-Ne Lasers

Recent Posts

  • FieldBest I Optical Power Meter Teardown
  • Brsk Updates – A New Network Link
  • Melles-Griot 05-LHR-088 Helium-Neon Laser
  • Infrastructure Updates & The Cost Of Living
  • FTTP Has Arrived – With Some Caveats
Copyright © 2022 Experimental Engineering | Signify Dark by WEN Themes
Scroll Up