Hello from Finland!
You can call me Tommi, DoomMetalDude or DMDude! 😀
I’ve been lurking here for years from time to time. But about few months ago i decided that i must start using my brains again. It’s getting really consuming to just sit here in my home. For two years now…
Little history, my experience in audio. It’s a short list, btw. 😀
In 90’s i built stereo covox (some of you might remember those fancy little thingies) for my 386 pc, as i didn’t have the money to buy a soundcard. It contained two octal D-flipflops and R-2R networks as stereo 8-bit DAC. Sound quality for a raging teenager was “satisfactory”. Way better than the internal speaker anyway. Little later i built simple preamplifier, i think it was based on TDA1524 or something. Vol, balance, bass and treble. It worked great, it’s still somewhere in my junkboxes. By great i mean it stayed alive, without breaking, despite my misuse. Sound quality, hmm, well… 😀 Then i built TDA2003(?) based amplifier, but burned it by accident. Then came the digital era, schools and work and it all got me away from audio, as AVR mcu’s and girls became “the thing”.
Oh, almost forgot. My first audio circuit was 8-bit AD/DA- converter for the mighty C64. It could store and play about 3.5sec of audio at maximum resolution. Nice times. 😀
I’m really bad at math, but i do have lots of experience in general electronics. It’s been my hobby in a way or another since i was teenager. For about 17 years i repaired, installed and serviced electronics in/for trams (among other things for them). Cronos dataloggers, scopes, low voltage, little higher voltages (600-1000V), you name it. Mainly repairing or measuring something.
I can make basic simulations in LTSpice, but the word “basic” may be rather vague in this site. I’m still learning it, as i’m nowhere near for simulating THD, noise nor PSRR. It’s left to be seen where i stand with my skills…
I’m a DIY-guy by heart and soul. Last thing i built (at work) was ITX-case for my little PC. I built it ‘cos i couldn’t find suitable, ready made case for it. Workmates helped with panel cutting, but everything else is made (and painted 😀 ) by me. Dimensions about W 170mm, H 252mm and D 320mm. Only thing still missing is DVD-drive. Maybe some day…. I'm also making a new wersion of it, it'll be in 3D-printable. But that'll take time, only a few pieces are drawn ready.
That’s it, short story of me. 🙂
I have a few designs, that i need help with. But all in time, may take a few days to put it all together in understandable form.
Regards,
Tommi, the DoomMetalDude.
You can call me Tommi, DoomMetalDude or DMDude! 😀
I’ve been lurking here for years from time to time. But about few months ago i decided that i must start using my brains again. It’s getting really consuming to just sit here in my home. For two years now…
Little history, my experience in audio. It’s a short list, btw. 😀
In 90’s i built stereo covox (some of you might remember those fancy little thingies) for my 386 pc, as i didn’t have the money to buy a soundcard. It contained two octal D-flipflops and R-2R networks as stereo 8-bit DAC. Sound quality for a raging teenager was “satisfactory”. Way better than the internal speaker anyway. Little later i built simple preamplifier, i think it was based on TDA1524 or something. Vol, balance, bass and treble. It worked great, it’s still somewhere in my junkboxes. By great i mean it stayed alive, without breaking, despite my misuse. Sound quality, hmm, well… 😀 Then i built TDA2003(?) based amplifier, but burned it by accident. Then came the digital era, schools and work and it all got me away from audio, as AVR mcu’s and girls became “the thing”.
Oh, almost forgot. My first audio circuit was 8-bit AD/DA- converter for the mighty C64. It could store and play about 3.5sec of audio at maximum resolution. Nice times. 😀
I’m really bad at math, but i do have lots of experience in general electronics. It’s been my hobby in a way or another since i was teenager. For about 17 years i repaired, installed and serviced electronics in/for trams (among other things for them). Cronos dataloggers, scopes, low voltage, little higher voltages (600-1000V), you name it. Mainly repairing or measuring something.
I can make basic simulations in LTSpice, but the word “basic” may be rather vague in this site. I’m still learning it, as i’m nowhere near for simulating THD, noise nor PSRR. It’s left to be seen where i stand with my skills…
I’m a DIY-guy by heart and soul. Last thing i built (at work) was ITX-case for my little PC. I built it ‘cos i couldn’t find suitable, ready made case for it. Workmates helped with panel cutting, but everything else is made (and painted 😀 ) by me. Dimensions about W 170mm, H 252mm and D 320mm. Only thing still missing is DVD-drive. Maybe some day…. I'm also making a new wersion of it, it'll be in 3D-printable. But that'll take time, only a few pieces are drawn ready.
That’s it, short story of me. 🙂
I have a few designs, that i need help with. But all in time, may take a few days to put it all together in understandable form.
Regards,
Tommi, the DoomMetalDude.
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Welcome to diyAudio Tommi 🙂
If you click my signature line at the bottom of this post it will take you to the main LTspice thread where a lot of the basics of simulation are covered.
If you click my signature line at the bottom of this post it will take you to the main LTspice thread where a lot of the basics of simulation are covered.