Found elsewhere in this section, this circuit mimics the noise of a steam locomotive. This was obtained from an Electronics Today International of the 1980s.
The presented circuit simulates a high power zener that depends on the characteristics of the...
This circuit is from a Radio Electronics from April 1964. The circuit uses power transistors of...
We found this probe circuit for frequency meters up to 10 MHz with a sensitivity of 10 mV, which...