This circuit was found in a 90s European documentation. The circuit already includes a powerful amplification stage. The MOSFET can be of any type.
This circuit is suitable for SSB modulation and was obtained from an amateur radio documentation from...
The components of this circuit are from the time of its publication in the 1980s. Modern...
This doorbell or buzzer as announced in a 1990s US publication uses an operational amplifier that admits...