Create accountLogin

Recent searches

No recent searches

Search options

Only available when logged in.
mastodon.radio is one of the many independent Mastodon servers you can use to participate in the fediverse.
Mastodon.Radio is a space for the Amateur (Ham) Radio community, anyone interested in Shortwave Listening (SWL), etc. Come join us and talk radio, technology, and more!

Administered by:

Server stats:

869
active users

mastodon.radio: AboutStatusProfiles directoryPrivacy policy

Mastodon: AboutGet the appKeyboard shortcutsView source codev4.3.6

Gary @N8DMT

@hamchallenge HC22S : Simulate an electric circuit. Used free LT-Spice to model a ~35W P-P RF power amplifier. Included a simple output graph showing dB gain of the circuit. Other possible simulations include input return loss, output match, time domain waveforms, harmonic distortion vs. drive level, and much more. Lots of fun to learn and experiment with this circuit simulation tool.

Screen capture of the 10-30MHz RF amplifier simulation running in LT-Spice on the Win11 Ham PC. The upper portion is the simulation results showing gain decreasing slightly from 32.6 to 28.8 dB over the frequency range. The lower portion shows the schematic, including 4.2V bias network for the IRF510 devices.
Mar 31, 2025, 04:00 PM·Public·Mastonaut
3boosts·4favorites
Public
Alexander Knochel

@n8dmt @hamchallenge Interesting topology without center tap at the transformer

Public
Gary @N8DMT

@quantensalat @hamchallenge HC22
Yes, it’s a trade between output stage designs (lots of ways to implement output bias for M1 & M2). It’s a fun circuit simulation and supports RF learning in many ways! Thanks & 73

SearchLive feeds
About