Noise canceler (CB8774E)

Suggested by the 90s ARRL Handbook edition, this circuit aims to reduce or cancel noise at the reception of a telecommunications receiver.

| Clique na imagem para ampliar |

Triangular Generator LM3900 (CB15629E)
To obtain triangular signals, we have the circuit in the figure that uses two amplifiers. One of...
Limiter with zener diode (CB7054E)
This circuit was found in an old Electronic Design. It makes use of sidacs and operational not very...
Audible Voltmeter (CB21395E)
This circuit was found in an American publication from 1969. Transistors are from the time and can be...