Posted on April 22nd, 2014 8 comments
Dave flips the bird.
A 1970′s Mattel car racing game.
Sex on a stick multimeter probes.
Sagan, Mrs EEVblog, and a whole lot more in today’s Mailbag Monday
Posted on April 20th, 2014 7 comments
Doug Ford, former head designer from Rode Microphones continues with Part 2 of the microphone technology series by explaining the construction of noise cancelling Figure 8, cardioid, and hyper cardioid microphones. Also, how the polar patterns and responses relate to the physical construction, and how the frequency response is affected.
Proximity boost effect,
Microphone calibration is also discussed using a home made artificial voice speaker box.
And practical considerations about foldback wedges used in stage performances and how to avoid feedback using proper microphone technique.
And did Jimmy Barnes offer Doug a swig from his bottle of Vodka?
Posted on April 17th, 2014 19 comments
The obligatory “before” video showing Dave’s Sinclair C5 electric “car” and its poor condition before commencing restoration work.
Posted on April 16th, 2014 8 comments
What’s inside a Dräger Multiwarn II gas detection warning system used in mining, oil, chemical, and emergency services etc to detect hazardous or explosive atmospheres.
Intrinsic safety design and how both catalytic bead and infrared IR gas detectors work, and pellistors.
And a teardown of a Hydrogen Sulfide (H2S) sensor.
Posted on April 12th, 2014 11 comments
In the first of a series of videos tutorials on microphones, Doug Ford, former head designer at Rode Microphones explains the basics of how microphones work, the different types – carbon, dynamic, ribbon, condensor/electret, and how the omnidirectional pattern works.
Also, the internal construction of a high end measurement microphone.
Discuss on the Forum HERE