This broadband amplifier was found in an Elektor from the 90's. The gain is 10 dB with a noise figure of less than 5 dB.
This oscillator for the practice of telegraphy provides a good sound in a loudspeaker, with only...
This ultrasonic insect repellent was found in American documentation from the 1980s. The...
The short-wired circuit is suggested by National Semiconductor in documentation on the LM3909. The power...