This circuit was found in an 80's Electronic Design. It amplifies TTL fast signals for a coaxial cable. TTL is from the S (Schottky) line and transistors are types of the time.
This circuit generates a frequency modulated tone with excellent power. Other power MOSFETs can be...
This circuit has a sensitivity of 200 mV providing an RMS power of around 4 W for a load of 8 ohms...
This filter was obtained from Radio Electronics from the 80's. The configuration applies to any...