Author: Chryseus
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Measuring Amplifier AC Impedance
Knowing the impedance of an amplifier or any electronic circuit can be very useful, for lower frequency applications it’s desirable to have the source impedance be much lower than the load impedance to minimize voltage drop, in RF applications and where maximum power transfer is needed it’s better to match impedance to avoid reflections, the…
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Securing a SSH Server
Secure Shell is a prime target for any attacker wanting to gain access to your machine, the default configuration is reasonably secure, but there is plenty of room for improvement, this is particularly important when setting up a machine for the first time over SSH, attacks can and do occur within hours so securing it…
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Fosi Audio DAC-Q4 Review
I’ve been having a problem with PC audio noise for quite some time, the front audio jack in particular was very susceptible to interference, primarily from my GPU, I decided to get an audio DAC to fix the problem, specifically I wanted one with an optical S/PDIF input since this provides complete electrical isolation which…
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Microcap 12 Review
Microcap 12 is a formerly commercial circuit simulator that has been made freeware, it was developed by Spectrum Software since 1982 with the final release coming in 2020, while there will no longer be any updates Microcap 12 is fully functional and mature software. Interface Microcap has a lot of functionality so as might be…