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Hardware
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Universal Radio Tester
This simple device is a basic signal generator that can be used to debug audio and AM radio frequency circuits. It produces a (roughly) 1 kHz periodic wave output that has enough harmonic frequency content to go into high MHz range – this will make the signal audible even when…
Audio
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3. Dead Kings bass effects pedal – EQ
This is the 3rd post in the Dead Kings preamp series. Now to design the EQ module! My initial idea was to create a circuit inspired from the classic tube bass amplifiers, like Ampeg Portaflex or SVT. I did some research and got somewhat carried away, so the circuit I…
Audio
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Bad Screamer: more gain
All articles from the Bad Screamer series This one is very similar to the Bad Screamer: adding a mid-boost version, the difference being the gain stage has a Darlington pair, increasing maximum available gain (by a lot). I made this modification thinking ahead about using the same schematic but with…