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Bradley Michaels .
Lived in Bangkok
1,897 followers|119,737 views
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Bradley Michaels .

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Recapping a crossover on a pair of Realistic Solo 3a speakers from 1970.  Both tweeters are blown, that isnt cool at all.
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Blowing the dust off my .NET MF Mobile phone project.  I Finally got the damn SM5100B cellular shield to display boot commands in serial console. This is progress.  Today I will write some code to make a phone call once I get the APN config figured out.  #netduino  
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Bradley Michaels .

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Getting a start on a 20kV Stun Gun project
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Do you do evil laugh while you build it? I would do evil laugh. I do evil laugh even when I'm not doing evil.
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I popped in a 2N4401 transistor and tested the jamming circuit. I measured 1.4v across the IR emitter diode which is perfect, but the transistor temp got over 170F before i switched it off. Is this normal?
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Anyone else get this sappy email from Target?  I modified the header to be more appropriate.  hehe.
I wonder what the hell they are doing to prevent such a disaster from happening again.
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In their circles
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I am Recapping the crossover network on a pair of '71 Sansui speakers.  
The higher value elect. caps (22mfd, 47mfd) are going to be expensive replacing with NP capacitors : ( 
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My Stun Gun is coming along nicely.  I fabricated the prongs from wall picture hanger hardware and housed it in a plastic piece i found, which should insulate fine.  Still waiting on the .01 uF 400V capacitors  and the correct 1K:8R audio transformer, I put in smaller ones as placeholders to see how it will all way out.
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this EMP generator is working, i think. I get readings over 120 milligauss of magnetic field and i see some kind of signal on the oscilloscope.
This sucker gets hot, I had to use a heatsink and still gets over 160F.  
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I am testing a mic pre-amp circuit and kept getting strange feedback in the signal output. I narrowed the cause down to the variable voltage bench power supply. I get the static feedback when it powered off in both positive and negative leads, the only way to eliminate it is to unplug the power supply from the wall.  Do i have a bad ground in the power outlet or an issue with the power supply itself?
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Redesigned the microphone pre-amp circuit for the #netduino  mobile phone project to use a LM741 Operational Amplifier chip
and a pot to control the phone's volume. I added a 1/8 jack to test the microphone with my laptop.
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People
In their circles
298 people
Have them in circles
1,897 people
Work
Occupation
.NET Application Developer
Skills
MVC, C#, Entity Framework, LINQ, MSSQL, mySQL, Zend framework, .NET Framework .NET Micro Framework
Links
Story
Tagline
.NET Coding Kingpin
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Previously
Bangkok - Pattaya