The purpose of this circuit is to check the linearity of SSB amplifiers. The circuit was found in an old documentation for hams. The diode is a general purpose detector type.
This unijunction transistor flasher or blinker was found in an old Popular Electronics. The...
This circuit was found in a Popular Electronics of the 90s. The output amplitude will be between...
This Wein bridge oscillator as it is also known uses a 741 with symmetrical power. With the...