This circuit was found in an Electronic Design from 1964. The components are from that time and can be replaced by equivalents. The modulation ranges from 0.25 to 0.75 of the 20 kHz pulses.
This circuit was sent by our longtime collaborator, Adriano Muniz Moura – Pirapora-MG. The...
This circuit was obtained from documentation from the 90s. The solution that can be found...
This transistor tester circuit is a little more sophisticated than the previous two (CB18918E and...